WO2025078599A1

WO2025078599A1 - Cleansing lamellar composition

Info

Publication number: WO2025078599A1
Application number: PCT/EP2024/078681
Authority: WO
Inventors: Duygu CELEBI; Daniel Filipe PEREIRA; Naresh Dhirajlal Ghatlia; Douglas John HIBAN
Original assignee: Unilever Global IP Ltd; Unilever IP Holdings BV; Conopco Inc
Current assignee: Unilever Global IP Ltd; Unilever IP Holdings BV; Conopco Inc
Priority date: 2023-10-13
Filing date: 2024-10-11
Publication date: 2025-04-17
Anticipated expiration: 2026-04-13

Abstract

The present invention is directed to a mild cleansing or wash composition that delivers excellent moisturizing sensory attributes. The cleansing composition comprises an anionic surfactant mixture comprising both an acyl isethionate and acyl taurate. The cleansing composition also comprises zwitterionic surfactant where 2.5 to 35% of the total weight of zwitterionic surfactant has C₈ to C₁₀ hydrophobic chain. The cleansing composition lathers well and can be formulated substantially free of sulfates.

Description

CLEANSING COMPOSITION

Field of the Invention

The present invention is directed to a mild cleansing or wash composition that delivers consumer desirable moisturizing sensory attributes. More particularly, the cleansing composition comprises an anionic surfactant mixture comprising both an acyl isethionate and acyl taurate. The cleansing composition also comprises zwitterionic surfactant where from 2.5 to 35% by weight of the total weight of the zwitterionic surfactant has C₈ to C10 hydrophobic chains. The cleansing composition in addition to being mild, surprisingly, lathers well, and delivers consumer desirable moisturizing sensory attributes after use, even when formulated with less than 8.25% by weight of total occlusive. Such a cleansing composition does not leave skin feeling tacky or draggy, is stable and may be formulated substantially free of at least one of sulfate-based surfactants, dioxanes, parabens, hydantoins, phthalates, silicones and isothiazolinones.

Background of the Invention

Wash compositions are typically employed to cleanse skin and to reduce shine associated with sebum produced in epithelial cells known as sebocytes. They are also used to minimize bacteria on the hands and face such that washing is viewed as the most effective way to prevent the spread of germs and bacteria. In fact, experts believe that periodic washing throughout the day can reduce the number of consumers catching colds by about 50%.

Since the Covid-19 pandemic, consumers are more wash conscious, and therefore, attracted to wash compositions that not only help reduce the chances of getting sick, but also minimize a dry and stripped skin feel. Negative feedback associated with moisturizing wash compositions suggest that typical compositions lather poorly and thus are deemed less impactful to achieve thorough cleansing. Additional feedback suggests such conventional moisturizing compositions (i.e. , products with zwitterionic surfactants having more than 9% by weight of occlusive) can leave the skin feeling tacky and are often hard to evacuate from packaging in view of their high occlusive content.

It is of increasing interest to develop a mild cleansing composition that lathers well, and that results in consumer desirable moisturizing sensory attributes without leaving skin feeling tacky or draggy. It is also of increasing interest to develop such a product that is easier to evacuate from packaging and that is less reliant on palm kernel oil and/or coconut oil as well as high levels of occlusives; and especially, those occlusives derived from petroleum. The present invention, therefore, is directed to a mild cleansing composition that surprisingly delivers consumer desirable moisturizing sensory attributes, the cleansing composition having an anionic surfactant mixture comprising both an acyl isethionate and acyl taurate. Such a composition also comprises zwitterionic surfactant where from 2.5 to 35% of the total weight of zwitterionic surfactant has C₈ to C-io hydrophobic chains. The cleansing composition of the present invention is not only mild on skin but also, and surprisingly, lathers well, and unexpectedly, delivers consumer desirable moisturizing sensory attributes after use, even when formulated with less than 8.25% by weight of occlusive. Such a cleansing composition does not leave skin feeling tacky or draggy, is stable and can be formulated substantially free of at least one of sulfate-based surfactants, dioxanes, parabens, hydantoins, phthalates, silicones and isothiazolinones.

Additional Information

Efforts have been disclosed for making cleansing compositions. In U.S. Patent No. 9,066,859, viscoelastic cleansing gels having nonionic and amphoteric surfactants are described.

Other efforts have been disclosed for making cleansing compositions. In U.S. Patent No. 9,974,726, gentle cleansing compositions with make-up removal properties are described.

Even other efforts have been disclosed for making cleansing compositions. In World Application Nos. WO 2020/023187A1 and WO 2020/099036A1 , personal cleansing compositions are described.

Still other efforts have been disclosed for making cleansing compositions. In U.S. Patent No. 10,039,939 and U.S. Published Patent Application No. 2018/0318195 A1 , sulfate-free cleansing compositions are described.

None of the additional information describes a mild cleansing composition as described and claimed herein.

Summary of the Invention

In a first aspect, the present invention is directed to a lamellar wash composition comprising: a) anionic surfactant comprising from 2 to 6.75 %, and preferably, from 2.2 to 5.5% and most preferably, from 2.5 to 5% (or from 2.75 to 4.75 or from 3 to 4.5 or from 3.25 to 4.25 or from 3.5 to 4%) by weight of an acyl isethionate and from 3 to 8%, and preferably, from 3.2 to 7.75% and most preferably, from 3.25 to 7.5% (or from 3.5 to 7% or from 4 to 6.75% or from 4.25 to 6.25% or from 4.75 to 5.65%) by weight of an acyl taurate; b) from 3 to 7.5%, and preferably, from 3.5 to 7%, and most preferably, from 3.75 to 6.75% (or from 4 to 6.5% or from 4.25 to 6.25%, or from 4.5 to 6% or from 4.65 to 5.5% by weight zwitterionic surfactant; c) from 1 .75 to 6%, and preferably, from 1 .95 to 5.5%, and most preferably, from 2.25 to 5.5% (or from 2.75 to 5% or from 2.75 to 4.75% or from 2.75 to 4.5 or from 2.95 to 4.5%) by weight thickener, with the provisos that: i) the weight ratio of acyl isethionate to acyl taurate is 1 :0.8 to 1 :2.5, and preferably, from 1 : 1 to 1 :2.25 or from 1 :1.1 to 1 :2 (or from 1 :1.1 to 1 :1.9 or from 1 :1.2 to 1 :1.8 or from 1 :1.3 to 1 :1.7 or from 1 :1.3 to 1 :1.45); ii) the lamellar wash composition is optionally substantially free of at least one of sulfate-based surfactants, phthalates, dioxanes, parabens, hydantoins and isothiazolinones; iii) total surfactant in the lamellar wash composition does not exceed 22.25% by weight; iv) 2.5 to 35% of the total weight of zwitterionic surfactant comprises C₈ to C10 hydrophobic chains based on total weight of zwitterionic surfactant; and v) the lamellar wash composition has a pH from 5.75 to 8.25, and preferably, from 5.9 to 8, and most preferably, from 6 to 7.5 (or from 6 to 7.25 or from 6.1 to 7 or from 6.2 to 6.9).

In a second aspect, the present invention is directed to a lamellar wash composition comprising: a) anionic surfactant comprising from 2 to 6.75 %, and preferably, from 2.2 to 5.5% and most preferably, from 2.5 to 5% (or from 2.75 to 4.75 or from 3 to 4.5 or from 3.25 to 4.25 or from 3.5 to 4%) by weight of an acyl isethionate and from 3 to 8%, and preferably, from 3.2 to 7.75% and most preferably, from 3.25 to 7.5% (or from 3.5 to 7% or from 4 to 6.75% or from 4.25 to 6.25% or from 4.75 to 5.65%) by weight of an acyl taurate; b) from 3 to 7.5%, and preferably, from 3.5 to 7%, and most preferably, from 3.75 to 6.75% (or from 4 to 6.5% or from 4.25 to 6.25%, or from 4.5 to 6% or from 4.65 to 5.5%) by weight zwitterionic surfactant; c) less than 3.25%, and preferably, less than 3%, and most preferably, less than 2.75% (or from 0.5 to 2.65% or from 0.75 to 2.55% or from 1 to 2.5%) by weight electrolyte; d) from 1.75 to 6%, and preferably, from 1.95 to 5.5%, and most preferably, from 2.25 to 5.5% (or from 2.75 to 5% or from 2.75 to 4.75% or from 2.75 to 4.5 or from 2.95 to 4.5%) by weight thickener based on total weight of the lamellar wash composition; and e) a first occlusive and a second occlusive being distinct from the first occlusive, the first occlusive having a droplet size from 1 to 250 microns, and preferably, from 1 to 100 microns, and most preferably, from 1 to 50 microns (or from 2 to 40 microns or from 2 to 35 or from 2 to 10 microns or from 2.5 to 8 microns), and the second occlusive having a droplet size that is less than 1 micron or from 25 to 950 nm, and preferably, from 40 to 800 nm, and most preferably, from 50 to 750 nm (or from 65 to 700 nm, or from 70 to 650 nm, or from 80 to 650 nm, or from 120 to 625 nm), the first and second occlusive making up a total occlusive weight being equal to 20 to 75%, and preferably, 20 to 70%, and most preferably, 21 to 65% (or equal to 22 to 60% or 22 to 55% or from 22 to 50% or from 22 to 42% or from 30 to 40%) by weight of a total surfactant weight of the anionic and zwitterionic surfactant in the lamellar wash composition, with the provisos that: i) the weight ratio of acyl isethionate to acyl taurate is 1 :0.8 to 1 :2.5, and preferably, from 1 : 1 to 1 :2.25 or from 1 :1.1 to 1 :2 (or from 1 :1.1 to 1 :1.9 or from 1 :1.2 to 1 :1.8 or from 1 :1.3 to 1 :1.7 or from 1 :1.3 to 1 :1.45); ii) the lamellar wash composition is substantially free of sulfate-based surfactants; ii) total surfactant in the lamellar wash composition does not exceed 22.25% by weight; iii) 2.5 to 35% of the total weight of zwitterionic surfactant comprises C₈ to C10 hydrophobic chains based on total weight of zwitterionic surfactant; iv) the thickener comprises less than 1 .5% and preferably, less than 1 .25%, and most preferably, less than 1 % (or less than 0.5% or from 0.001 to 0.9% or 0.0%) by weight quaternized hydroxyethyl cellulose polymer having a molecular weight from 195 to 825 kDa (or a molecular weight from 185 to 950, or from 170 to 900, or from 150 to 1000 kDa) based on total weight of thickener in the wash composition; v) the lamellar wash composition has a pH from 5.75 to 8.25, and preferably, from 5.9 to 8, and most preferably, from 6 to 7.5 (or from 6 to 7.25 or from 6.1 to 7 or from 6.2 to 6.9); and vi) the lamellar wash composition optionally comprises an activator of peroxisome proliferator- activated receptors. In a third aspect, the present invention is directed to a method of cleansing a surface by contacting the surface with the lamellar wash composition of the first or second aspect of the invention, applying shear to generate a lather and rinsing the surface with water.

In a fourth aspect, the present invention is directed to the use of anionic and zwitterionic surfactants, and optionally, occlusives in a lamellar wash composition to impart moisturizing sensory attributes to skin.

All other aspects of the present invention will more readily become apparent from the description and examples which follow.

Skin, as used herein, is meant to include skin on the arms (including underarms), face, back, feet, neck, chest, hands, legs, buttocks and scalp. Surface is meant to include nails and hair. Stable means no syneresis and able to maintain a viscosity of at least 80,000 mPa-s for at least one month, and preferably, for at least 2 months, and even more preferably for at least 3 months, after being made and stored at 45°C.

As it relates to the occlusives, not identical or not the same or distinct, means no more than 30% of the total weight of ingredients in one occlusive, based on total weight of the occlusive, is the same as the ingredients in the other occlusive used, and preferable no more than 20%, and more preferably, no more than 15%, and most preferably, no more than 10% or no more than 5% or no more than 2% by weight are the same. In an embodiment of the invention, from 0.001 % to 20% (or from 0.001 to 15% or from 0.01 to 10%) of the ingredients in one occlusive based on total weight of the occlusive is the same as the ingredients in other occlusive used. In still another embodiment, none of the ingredients (0.0%) in each occlusive is the same. For illustration, if a first occlusive is at least 30% by weight of “oil A” based on total weight of the first occlusive, a second occlusive used will comprise 30% by weight or less of oil A based on total weight of the second occlusive in order to be not identical or distinct as herein defined.

Palm kernel oil derived and coconut oil derived mean that a component has a fatty portion (i.e. , hydrophobic chain) with C₈-Ci₆ saturated hydrocarbon chains obtained from palm kernel oil or coconut oil (as the case may be). Occlusive means an additive or ingredient for a composition and used to enhance the trapping or securing of moisture to or within (or both) a surface like skin. Lamellar, as used herein, means having layers of surfactant in arrangement where polar head groups align with water to shield fatty acid acyl chains from the water such that over 85% (or 90 to 100% or 100%) of the total resulting surfactants in the composition are arranged as micelle plates or layers creating a translucent or opaque composition. In the present invention and as is demonstrated in the data provided, it has been unexpectedly discovered that compositions consistent with the invention surprisingly result in superior lathering characteristics (i.e., total lather height of at least 57.5 mm, and preferably, at least 57.7 mm, and more preferably at least 57.8 mm, and most preferably at least 58 mm as measured with a Kruss Dynamic Foam Analyzer as described in the Examples) and consumer desirable skin moisturizing sensory attributes when compared to commercially available moisturizing cleansing products that have at least 9% by weight or more occlusive. Total lather height as reported means height of liquid plus height of foam combined after starting with an equal volume of liquid and volume of wash composition. Consumer desirable skin moisturizing attributes, as used herein, means surprisingly leaving skin that was washed with the lamellar wash composition of the present invention feeling at least as hydrated or more hydrated in comparison to skin washed with commercial product having over 9% by weight occlusive.

The wash composition of the present invention is one which can have a viscosity from 80,000 mPa-s to 2,000,000 mPa-s where viscosity is taken at 25°C with a Discovery HR-2 Rheometer using a parallel plate or cone and plate having a 1000-micron gap and a shear rate of 0.1 s-1.

The wash composition of this invention is one suitable to be wiped or washed off, and preferably, washed off with water. Such a composition can be a home care cleaning composition (e.g., for tabletops, glass, toilets dishes, upholstery, or laundry) but is preferably a shampoo, make-up wash, facial wash, or hand wash, and especially, a personal care liquid body wash. In an embodiment of the invention, the wash composition can have a viscosity from 80,000 to 1 ,800,000 mPa-s, and preferably, from 85,000 to 1 ,675,000 mPa-s, and most preferably, from 90,000 to 1 ,450,000 mPa-s (or 95,000 to 1 ,175,000 mPa-s, or 100,000 to 1 ,115,000 mPa-s or from 150,000 to 1 ,000,000 mPa-s or from 170,000 to 1 ,000,000 mPa-s or 175,000 to 950,000 mPa-s). When used for hand applications, the lamellar wash composition of the present invention will preferably have a viscosity that is not higher than 150,000 mPa-s, preferably not over 100,000 mPa-s, and most preferably, between 80,000 and 170,500 mPa-s.

The wash composition of this invention may, optionally, comprise medicinal or therapeutic agents, but preferably, is a wash which is for cosmetic uses and non-therapeutic and formulated to remove dirt, oil or the like from surfaces including skin and hair. In a preferred embodiment, the lamellar wash composition is a personal wash composition, and therefore, a liquid body wash for use while showering or bathing. The lamellar wash composition of the present invention may optionally comprise skin benefit ingredients added thereto such as emollients, vitamins and/or derivatives thereof, resorcinols, retinoic acid precursors, activator of peroxisome proliferator-activated receptors, colorants, moisturizers, sunscreens, antibacterial agents, mixtures thereof or the like. Such skin benefit ingredients (or agents) can be water and/or oil soluble. If used, oil soluble skin benefit agents typically make up to 2% (or preferably up to 1 .5% or from 0.01 to 1 %) by weight of the lamellar wash composition whereby water-soluble skin benefit agents, when optionally used, may make up to 15% (or up to 10% or up to 5% or from 0.01 to 4.5%) by weight of the wash composition of the present invention. The lamellar wash composition will typically have a pH from 5.75 to 8.25, and preferably, from 5.9 to 8, and most preferably, from 6 to 7.5 (or from 6 to 7.25 or from 6.1 to 7 or from 6.2 to 6.9).

As used herein, “substantially free of” as it relates to sulfate (i.e. , sulfate-based surfactants) means less than 3.0%, and preferably, less than 2%, and most preferably, less than 1%, even more preferably, less than 0.75% (or less than 0.5%) by weight of the wash composition. In an embodiment of the invention, substantially free of sulfate includes a wash composition with 0.0% (none) by weight sulfate-based surfactant (e.g., surfactant represented as alkyl-OSO₃-). Regarding the non-sulfate-based ingredients that the wash compositions can be substantially free of (i.e., ingredients, like a hydantoin preservative, that are not sulfate containing surfactants like sodium lauryl sulfate), substantially free of means less than 0.8% by weight, and preferably, less than 0.7%, and most preferably, less than 0.5%, (or less than 0.3% or less than 0.22% or less than 0.1 % or less than 0.05%) by weight of the wash composition. As to the non-sulfate-based ingredients, substantially free of also includes 0.0% (i.e., none) by weight of the ingredient in the wash composition. With respect to all ingredients that the wash composition of the present invention may be substantially free of, it is within the scope of the invention to include from 0.001 to 0.065% or from 0.01 to 0.045% by weight of such ingredients. Substantially free of as used herein is, for the avoidance of doubt, meant to mean as applied to each ingredient individually. In yet another preferred embodiment, the wash composition of the present invention comprises less than 35 ppm, and preferably, less than 25 ppm, and most preferably, less than 15 ppm dioxane or less than 2 ppm or less than 1 ppm dioxane or less than 0.05 ppm or 0.0 ppm dioxane based on total dioxane in the wash composition where dioxane includes 1 ,4- dioxane. In another embodiment, the wash composition of this invention may comprise from 0.00001 to 0.00005% by weight dioxane, like 1 ,4-dioxane.

Acid value, as used herein means the weight of KOH in mg needed to neutralize organic acids present in 1 gram of test sample and it is a measure of the free fatty acids present in a composition. Acid value can be determined by the AOCS Official Method Cd 3d-63. The acid value of the petrolatum or petroleum jelly substitutes (i.e., second occlusive) described herein may be less than 10, or less than 7 or less than 6.5, or less than 5, or from 0.0 to 7, or from 0.0 to 6, or from 0.25 to 4. Iodine Value, as used herein, is the mass of iodine in grams that is consumed by 100 grams of a chemical substance and used to determine the amount of unsaturation in fats, oils and waxes. In fatty acids, unsaturation occurs mainly as double bonds which are very reactive towards halogens, like iodine. The higher the iodine value, the more unsaturation is present in the sample. The Iodine Value of a material can be determined by the standard well-known Wijs method (A.O.C.S. Cdl-25).

Cone penetration means resistance to deflection under pressure which can be measured by use of standard methodology ASTM D217-2. The natural-based occlusive formulations described herein can have a cone penetration at 25 degrees centigrade of greater than 10, or from about 10 to about 250 or from about 50 to about 100 (Dmm (1/10 of mm).

Polydispersity Index or molecular weight distribution means the ratio of weight average molecular weight (Mw) to number average molecular weight (Mn). The polydispersity data can be collected using a Gel Permeation Chromatography instrumentation using the standards as described in WO 22150815 A1 , the disclosure of which is incorporated herein by reference.

Droplet size (i.e., occlusive particle size, largest diameter measurable of the droplet) can be assessed with, for example, a laser diffraction size analyzer such as a Malvern Mastersizer 3000. Other available instruments include Brightfield (or Light) Microscopes such as those made available by Leica and Accu-Scope as well as Cryo-Scanning Electron Microscopy devices like those made available from Zeiss.

Unless explicitly stated otherwise, all ranges described herein are meant to include all ranges subsumed therein. The term comprises is meant to encompass the terms consisting essentially of and consisting of. For the avoidance of doubt and for illustration, a composition comprising a taurate and betaine is meant to include, for example, a composition consisting essentially of the same and a composition consisting of the same. As to the percentages used herein, the same are meant to be by weight of ingredient (i.e., not including any carrier, like water, that may be supplied with the ingredient) unless noted otherwise. Except in the operating and comparative examples, or where otherwise explicitly indicated, all numbers used in this description indicating amounts, or ratios of materials and/or use thereof are to be understood as modified by the word “about”. The disclosure, as found herein, is to be considered to cover all embodiments as found in the claims as being multiply dependent upon each other irrespective of the fact that claims may be found without multiple dependency or redundancy. Detailed Description of the Invention

As to the isethionates that may be used, such surfactants include C₆-C₂o acyl isethionates. These surfactants (esters) are prepared by a reaction between alkali metal isethionate with mixed aliphatic fatty acids having from 6 to 20 carbon atoms and an iodine value of less than 20. Often at least 75% of the mixed fatty acids have from 12 to 18 carbon atoms and up to 25% can have 6 to 10 carbon atoms. The acyl isethionate suitable for use may be an alkoxylated isethionate such as is described in llardi et al., U.S. Pat. No. 5,393,466, entitled "Fatty Acid Esters of Polyalkoxylated isethonic acid. The isethionate surfactants can include the reaction product of fatty acids esterified with isethionic acid and neutralized with a base like sodium or potassium hydroxide. The acyl isethionate surfactant can have the general formula:

RC-O(O)-C(X)H-C(Y)H-(OCH2-CH₂)m-SO₃- M⁺ (I), where R is an alkyl group having 5 to 19 carbons, m is an integer from 0 to 4 (1 to 4 for the alkoxylated option), X and Y are each independently hydrogen or an alkyl group having 1 to 4 carbons and M is hydrogen, ammonium, alkali metal cation, a lower Ci to C₄, alkanol ammonium cation and/or a basic amino acid cation. In an embodiment of the invention, M includes sodium, ammonium and/or potassium ions.

It is also within the scope of the invention, when m is 0, for either the carbon alpha or beta to the sulfonate group to have one C-M alkyl substitution in place of hydrogen, preferably a Ci.₃ alkyl substitution and most preferably, a methyl group. It is also within the scope of the invention for R to have a degree of unsaturation and typically no more than 2, and more preferably, no more than 1 double bond.

Illustrative examples of the isethionates suitable for use in the lamellar wash composition of the present invention include sodium capryl isethionate, sodium caproylyl isethionate, sodium capryl methyl isethionate, sodium caproylyl methyl isethionate, sodium cocoyl isethionate, sodium cocoyl methyl isethionate, sodium lauroyl isethionate, sodium lauroyl methyl isethionate, potassium lauroyl isethionate, potassium lauroyl methyl isethionate, sodium oleoyl isethionate, sodium oleoyl methyl isethionate, sodium stearoyl isethionate, sodium stearoyl methyl isethionate, sodium myristoyl isethionate, sodium myristoyl methyl isethionate, sodium palmitoyl isethionate, sodium palmitoyl methyl isethionate, ammonium cocoyl isethionate, ammonium cocoyl methyl isethionate, or mixtures thereof. In an embodiment of the invention, the isethionate used in the present invention is sodium lauroyl isethionate. As to the taurate used in the lamellar wash composition, the same is limited only to the extent that it is one suitable for use in a consumer product. Illustrative examples of the taurate surfactant that may be used include, for example, those which are acylamides of taurine or N-methyltaurine, and salts thereof. For example, taurates suitable for use are acyl taurates represented by the general formulae:

R¹(C=O)N(R²)CH₂CH₂SO₃- M⁺ (II), where R¹ is C₅ to C29, more particularly, C₅to C₂₃ alkyl, R² is hydrogen or methyl, and M is as previously defined. In one embodiment, R¹ is C₅ to C17 alkyl. In another embodiment at least half of the R¹ groups are C₇-Ci₈ alkyl. In still another embodiment at least half of the R¹ groups are C₉ to C15 alkyl or C₉ to Ci₃ alkyl. R¹ may be saturated or unsaturated. In yet another embodiment R² is methyl. For the avoidance of doubt, overall alkyl chain lengths described herein will include the carbonyl carbon.

Illustrative acyl taurates that may be used in the surfactant system of the invention include, for example, taurates commonly known as sodium methyl lauroyl taurate, potassium methyl lauroyl taurate, sodium methyl myristoyl taurate, potassium methyl myristoyl taurate, ammonium methyl myristoyl taurate, sodium methyl cocoyl taurate, potassium methyl cocoyl taurate, ammonium methyl cocoyl taurate, sodium methyl oleoyl taurate, potassium methyl oleoyl taurate, ammonium methyl oleoyl taurate, sodium lauroyl taurate, potassium lauroyl taurate, ammonium myristoyl taurate, sodium cocoyl taurate, potassium oleoyl taurate, mixtures thereof or the like. In an embodiment of the invention, the taurate used in the present invention is sodium methyl lauroyl taurate.

As noted herein, the weight ratio of acyl isethionate to acyl taurate in the lamellar wash composition of the present invention is 1 :0.8 to 1 :2.5, and preferably, from 1 :1 to 1 :2.25 or from 1 :1.1 to 1 :2 (or from 1 :1.1 to 1 :1.9 or from 1 :1.2 to 1 :1.8 or from 1 :1.3 to 1 :1.7 or from 1 :1.3 to 1 :1.45).

The amount of acyl isethionate used is typically from 2 to 6.75%, and preferably, from 2.2 to 5.5% and most preferably, from 2.5 to 5% (or from 2.75 to 4.75 or from 3 to 4.5 or from 3.25 to 4.25 or from 3.5 to 4%) by weight of the lamellar wash composition. The amount of acyl taurate used is typically from 3 to 8%, and preferably, from 3.2 to 7.75% and most preferably, from 3.25 to 7.5% (or from 3.5 to 7% or from 4 to 6.75% or from 4.25 to 6.25% or from 4.75 to 5.65%) by weight of the lamellar wash composition.

In an embodiment of the invention, at least 75%, and preferably, at least 85%, and most preferably, at least 90% (or 90 to 100%, or 92 to 99%, or 94 to 97% or 95 to 99% or 100%) by weight of the total anionic surfactant used in the lamellar wash composition is a mixture of acyl isethionate and acyl ta urate.

Optional anionic surfactants that are suitable to use along with the mixture of acyl isethionate and acyl taurate described herein include those generally classified as acyl glutamates and acyl glycinates.

Acyl glutamates (and salts thereof) suitable for optional use include C₈ to C20, and preferably, C10 to Cis and most preferably, C12 to Ci₆ or C12 to C14 acyl glutamates where the acyl portion is preferably saturated but suitable to be unsaturated with no more than 2 double bonds, including conjugated double bonds. Illustrative yet nonlimiting examples of the glutamates that may be used include sodium capryloyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium cocoyl glutamate, sodium stearoyl glutamate, dipotassium capryloyl glutamate, dipotassium undecylenoyl glutamate, disodium capryloyl glutamate, disodium cocoyl glutamate, disodium lauroyl glutamate, disodium stearoyl glutamate, disodium undecylenoyl glutamate, potassium capryloyl glutamate, potassium cocoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, potassium stearoyl glutamate, potassium undecylenoyl glutamate, sodium olivoyl glutamate, sodium palmitoyl glutamate, sodium undecylenoyl glutamate, disodium cocoyl glutamate or a mixture thereof. In an embodiment of the invention, a mixture of at least two of sodium lauroyl glutamate, sodium cocoyl glutamate and sodium stearoyl glutamate is preferred. In another embodiment, if a glutamate is used, sodium myristoyl and/or sodium cocoyl glutamate are often desired.

As to the acyl glycinates (and salts thereof) suitable for optional use, these include C₈ to C20, and preferably, C10 to Ci₈ and most preferably, C12 to Ci₆ or C12 to C14 acyl glycinates. Illustrative and nonlimiting examples of the glycinates that may be used include sodium lauroyl glycinate, sodium myristoyl glycinate, sodium cocoyl glycinate, potassium lauroyl glycinate, sodium myristoyl glycinate, potassium cocoyl glycinate or a mixture thereof. In an embodiment of the invention, sodium cocoyl glycinate, potassium cocoyl glycinate or a mixture thereof are often preferred when acyl glycinates are used. In another embodiment, sodium or potassium lauroyl glycinate or both may also be used in the lamellar wash compositions of the invention. As with the glutamates suitable for optional use, the acyl portion of the glycinates optionally used is preferably saturated but suitable to be unsaturated with no more than 2 double bonds, including conjugated double bonds.

Other anionic surfactants suitable for optional use include alkyl sulfates, alkyl ether sulfates, alkyl sulfonates, alpha-olefin sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, acyl sarcosinates or a mixture thereof (including any salts thereof). As noted herein, the lamellar wash composition of the present invention is optionally and preferably substantially free of sulfate-based surfactants. In an embodiment of the invention sulfate-based surfactant may be used at an amount of less than 3% by weight of the total weight of the lamellar wash composition. If optionally included, the sulfate-based surfactants can include C8-C20 alkyl sulfates and/or C₈-C₂o alkyl ether sulfates. When selected, sodium lauryl sulfate, sodium lauryl ether sulfate, ammonium lauryl sulfate, ammonium lauryl ether sulfate, sodium pareth sulfate or a mixture thereof are often used. As to those sulfate-based surfactants classified as alkyl ether sulfates, the ethoxy portion is typically from 1 to 3 ethoxy units in length, and often, from 2 to 3 ethoxy units in length.

As to the anionic sulfonates and their salts that may optionally be used (in addition to the isethionates and taurates described herein), the same can include alkyl sulfonates, alkyl glyceryl ether sulfonates, alkyl alpha olefin sulfonates (hydrocarbons being an alkene, C_xH₂x, with a double bond in the alpha position) or a mixture thereof. Typically, the alkyl portion is from C₈-C₂₄, and preferably, from Ci₀-C₂₀, and more preferably, from C12 to Ci₈ or from C12 to Ci₆ or from C14 to Ci₆.

Suitable succinates (including their salts) that may optionally be included in the lamellar wash compositions are those with a C10 to C₂o hydrophobic portion. Illustrative examples include disodium oleamido MIPA sulfosuccinate, disodium oleamido MEA sulfosuccinate, disodium lauryl sulfosuccinate, disodium laureth sulfosuccinate, diammonium lauryl sulfosuccinate, diammonium laureth sulfosuccinate, dioctyl sodium sulfosuccinate, disodium oleamide MEA sulfosuccinate, sodium dialkyl sulfosuccinate, or a mixture thereof. For the avoidance of doubt, MIPA and MEA refer to monoisopropanolamine and monoethanolamine, respectively.

The acyl sarcosinates suitable for use include those having a C₈-C₂₀ or C10-C18 or Ci₂-Ci₈ acyl group. Illustrative examples of the sarcosinates that may optional be used include sodium lauroyl sarcosinate, sodium cocoyl sarcosinate, or a mixture thereof.

In an embodiment of the invention, at least one optional anionic surfactant used is selected from sodium lauryl sulfosuccinate, sodium myristoyl sulfosuccinate, sodium cocoyl sulfosuccinate, sodium stearoyl sulfosuccinate, sodium laureth sulfosuccinate, sodium pareth sulfosuccinate, disodium laureth sulfosuccinate, disodium lauryl sulfosuccinate, diethylhexyl sodium sulfosuccinate or a mixture thereof.

In yet another embodiment, the anionic surfactants used in the lamellar wash composition can optionally include sodium methyl 2-sulfolaurate or disodium 2-sulfolaurate or both.

Mixtures of any of the optional anionic surfactants may be used and the cation portion of their salts can include sodium, potassium and ammonium ions or mixtures thereof. In another embodiment of the invention, an often-desired optional anionic surfactant suitable for use are those generally classified as lactylates, including C10 -C₂o lactylates. Such lactylates can be a mono- or polylactyl or a mixture thereof as lactic acid can, for example, undergo self-esterification. Therefore, C10 -C20 lactylates suitable for use include lactylic esters of fatty acids represented by the formula:

where R^a is a C⁹ to C¹⁹ hydrocarbon, each R^b is independently hydrogen or a C1-3 alkyl with at least one R^b being alkyl (preferably methyl), u is an integer from 0 to 3 and Y+ is a counter ion that can include K⁺, Na⁺, NH₄ ⁺ or a mixture thereof.

In an embodiment of the invention, the C10-C20 lactylate comprises 40 to 100%, and preferably, 50 to 95%, and most preferably, 60 to 90% (or 65 to 85% or 70 to 80%) by weight of a C12-C20 (orCi₄-C₂o or Ci6-C2o or Cie-Cis) group (i.e., acyl portion) based on total weight of lactylate if optionally used in the lamellar wash compositions. The preferred lactylates, when used, are C14-C20 lactylates, and more preferably, C16-C18 lactylates like palmitoyl-1 -, stearoyl-1- lactylate or mixtures thereof. Polylactyls (typically numbering from two to three lactyl groups) are also suitable for use, like palmitoyl-2-lactylate, stearoyl-2- lactylate or mixtures thereof. In an embodiment of the invention, sodium lauroyl lactylate, sodium stearoyl lactylate or mixtures thereof are the preferred optional lactylates.

Yet another anionic suitable for optional use is when the R^b groups are hydrogen and the anionic represented by formula (III) is a glycolate.

As to the optional anionic surfactants, when used they typically make up less than 25% by weight of the total weight of anionic surfactant in the lamellar wash composition. In an embodiment of the invention, such optional anionic surfactants make up less than 20%, or less than 15% or from 0.001 to 12% or from 0.01 to 9% or from 0.01 to 5% by weight of the total weight of anionic surfactant in the lamellar wash composition. Again, and in an embodiment of the invention, the total anionic surfactant used in the lamellar wash composition is acyl isethionate and acyl taurate.

The zwitterionic surfactants suitable for use in the present invention comprise C₆ to C₂o, and preferably, from C₆ to Ci₈, and most preferably, from C₈ to Ci₈ hydrophobic chains (i.e. , making up the acyl portion) where from 2.5 to 35%, and preferably, from 3 to 32%, and most preferably, from 3.5% to 30% or from 3.8 to 28% or from 4 to 20% or from 5 to 19% or from 6 to 18% or from 8 to 15% of the total weight of zwitterionic surfactant is C₈ to C10 hydrophobic chain and the C₈ chain to C10 chain zwitterionic surfactants are present at a weight ratio from 1 :12 to 12:1 or from 1 :7.5 to 7.5:1 or from 1 :5 to 5:1 or from 1 :2.5 to 2.5:1 or from 1 :1.5 to 1.5:1 or from 1 :1.25 to 1.25:1 or from 1 :1.15 to 1.15 to 1 or 1 :1. Such zwitterionic surfactants will also comprise from 38 to 55%, and preferably, from 40 to 50%, and most preferably, from 42 to 48% or from 42 to 46% by weight C12 hydrophobic chain based on total weight of the zwitterionic surfactant.

As to the specific zwitterionic surfactants named herein, the same will have a mixture of hydrophobic chains as defined with surfactant having the Ci₂ hydrophobic chain making up from 38 to 55% by weight of the total weight of zwitterionic surfactant in the lamellar wash composition. For the avoidance of doubt and for illustration, when the zwitterionic surfactant selected is cocamidopropyl betaine, the betaine will have Ci₂ hydrophobic chain making up from 38 to 55% by weight of the total weight of betaine in the lamellar wash composition, subject to the additional chain distributions described.

The zwitterionic surfactants suitable for inclusion in the lamellar wash compositions of the present invention, subject to the noted chain distributions, include those with at least one acid group. The acid group may be a carboxylic or a sulphonic acid group. They often include quaternary nitrogen, and therefore, can be quaternary amino acids. Such surfactants should generally include an alkyl or alkenyl group of 6 to 18 carbon atoms and generally comply with the overall structural formula:

R³-[-C(O)-NH(CH₂)_q~]r-N⁺-(R⁴~)(R⁵)A— B (IV) where R³ is alkyl or alkenyl of 5 to 19 carbon atoms; R⁴and R⁵ are each independently alkyl, hydroxyalkyl or carboxyalkyl of 1 to 3 carbon atoms; q is 2 to 4; r is 0 or 1 ; A is an alkylene of 1 to 3 carbon atoms optionally substituted with hydroxyl, whereby B is --CO₂-- or --SO₃--.

Suitable zwitterionic surfactants that may be used in the present invention and within the above general formula include simple betaines of formula:

R³-N⁺-(R⁴)(R⁵)CH₂CO₂- (V) and amido betaines of formula:

R³--CONH(CH₂)t--N⁺--(R⁴)(R⁵)CH₂CO₂- (VI) where t is 2 or 3.

In both formulae R³, R⁴ and R⁵ are as previously defined. R³ would, in particular, include a mixture of C₇ to C17 alkyl groups and R⁴ and R⁵ are preferably methyl or ethyl groups, most preferably methyl groups. R³’ is C₆ to Cis.

A further possibility is that the zwitterionic surfactant is a sulphobetaine of the formula:

R³ -N⁺-(R⁴)(R⁵)(CH₂)₃SO₃- (VII) or

R³-CONH(CH₂)_U -N⁺-(R⁴)(R⁵)(CH₂)₃SO₃- (VI 11) where u is 2 or 3, or variants of these in which --(CH₂)₃SO₃ ^_ is replaced by -CH₂C(OH)(H)CH₂SO₃ ^_.

In these formulae (VII and VIII), R³, R³’, R⁴ and R⁵ are as previously defined.

Illustrative examples of the zwitterionic surfactants suitable for use include betaines like lauryl betaine, laurylhydroxy sulfobetaine, lauryldimethyl betaine, coco betaine, cocoamidopropylhydroxylsulfo betaine, cocodimethyl carboxymethyl betaine, cocamidopropyl betaine, laurylamidopropyl betaine, cocodimethyl carboxymethyl betaine, mixtures thereof or the like.

Additional zwitterionic surfactants suitable for use include lauryl hydroxysultaine, cocamidopropyl hydroxy sultaine or mixtures thereof. Such surfactants are made commercially available, and it is within the scope of the invention to employ mixtures of the aforementioned surfactants. In a preferred embodiment, the zwitterionic surfactant used in the wash of this invention is cocamidopropyl betaine, and again, subject to the noted chain distributions.

In an embodiment of the invention, less than 20%, and preferably, less than 35%, and most preferably, less than 50% or less than 70% or less than 85% or less than 95% by weight of the hydrophobic portion of the zwitterionic surfactants are recovered from petroleum, palm oil, palm kernel oil and/or coconut oil. In another preferred embodiment, 100% of the hydrophobic portion of the zwitterionic surfactants is not recovered from petroleum, palm oil, palm kernel oil and/or coconut oil.

In even another embodiment of the invention, from 0.0 to 15% or from 0.05 to 12% or from 0.5 to 10% by weight of any of the surfactants used in the lamellar wash composition may have hydrophobic portion with carbon recovered from purple carbon, and that is, carbon recovered from carbon dioxide waste gas via biotechnology that utilizes microbial gas fermentation.

In yet another embodiment, at least 10% or at least 25%, and preferably, at least 40%, and most preferably, from 40 to 100%, or from 50 to 100% or from 55 to 95% or 100% by weight of the zwitterionic surfactants used can have hydrophobic portion recovered from triglycerides such as those recovered from jojoba, avocado, olive, and nuts, as well as from seed oil (e.g., sunflower, linseed, rapeseed), and especially, from soy bean oil.

As noted, zwitterionic surfactant will make up from 3 to 7.5%, and preferably, from 3.5 to 7%, and most preferably, from 3.75 to 6.75% (or from 4 to 6.5% or from 4.25 to 6.25%, or from 4.5 to 6% or from 4.65 to 5.5% by weight of the lamellar wash composition.

In an embodiment of the invention, at least 75%, and preferably, at least 85%, and most preferably, at least 90% (or 90 to 100%, or 92 to 99%, or 94 to 97% or 95 to 99% or 100%) by weight of the total weight of zwitterionic surfactant used in the lamellar wash composition is a surfactant having the chain distribution as described.

Optional zwitterionic surfactants may be used and these, if desired, will make up less than 25% by weight of the total weight of zwitterionic surfactant in the lamellar wash composition. Preferably, such optional zwitterionic surfactants make up less than 20%, or less than 15% or from 0.001 to 12% or from 0.01 to 9% or from 0.01 to 5% by weight of the total weight of zwitterionic surfactant in the lamellar wash composition. In an embodiment of the invention, only zwitterionic surfactant (i.e., 100% by weight of the zwitterionic surfactant) satisfying the herein defined chain distribution is used in the lamellar wash composition of this invention.

Optional zwitterionic surfactants that may be included are C16-20 amidopropyl hydroxysultaines where the C16-20 amidopropyl hydroxysultaine is preferably palmityl, stearyl and/or oleyl amidopropyl hydroxysultaine, and most preferably, palmityl amidopropyl hydroxysultaine. Other suitable zwitterionic surfactants suitable for optional use include behenyl betaine, capryl/capramidopropyl betaine, stearyl betaine, myristyl hydroxysultaine or a mixture thereof. Nonionic surfactants may optionally be used in the lamellar wash composition of the present invention. When used, nonionic surfactants are typically used at levels as low as 0.001 , 0.02 0.03, 0.05, 1 , 1.5 or 2% by weight and at levels as high as 3 or 4% by weight of the lamellar wash composition. The nonionics which may be used include the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example aliphatic alcohols, acids, amides or alkylphenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide. Specific nonionic surfactant compounds are alkyl (C₆-C₂2) phenols ethylene oxide condensates, the condensation products of aliphatic (C₈-Ci₈) primary or secondary linear or branched alcohols with ethylene oxide, and products made by condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamine. Other nonionic surfactants include dialkyl sulphoxides, or the like.

In an embodiment of the invention, nonionic surfactants optionally used can include fatty acid/alcohol ethoxylates having the following structures a) HOCH2(CH2)_S(CH2CH₂O)_V H or b) HOOC(CH2)c(CH2CH2O)d H; where s and v are each independently an integer up to18; and c and d are each independently an integer from 1 or greater. In another embodiment, s and v are each independently 6 to 18; c and d are each independently 1 to 30. Other options for nonionic surfactants include those having the formula HOOC(CH2)i-CH=CH--(CH2)k(CH2CH2O)_z H, where i and k are each independently 5 to 15; and z is 5 to 50. In another embodiment, i and k are each independently 6 to 12; and z is 15 to 35.

The nonionic surfactant optionally used may also include a sugar amide, such as a polysaccharide amide. Specifically, the surfactant may be one of the lactobionamides as described in U.S. Pat. No. 5,389,279 to Au et al., entitled "Compositions Comprising Nonionic Glycolipid Surfactants issued Feb. 14, 1995. Nonionic surfactant may also include one of the sugar amides described in U.S. Pat. No. 5,009,814 to Kelkenberg, entitled "Use of N-Poly Hydroxyalkyl Fatty Acid Amides as Thickening Agents for Liquid Aqueous Surfactant Systems" issued Apr. 23, 1991.

In an embodiment of the invention, the nonionic surfactant used is an alkyl polyglucoside represented as:

R⁶-O-(S)_P, where R⁶ is a C₆ to C₂o or C₈ to Ci₈ or C10 to Ci₆ linear or branched alkyl and S is a saccharide group of 5 or 6 carbons such as glucose, xylose, lactose, fructose and/or mannose, and preferably, is glucose, and p represents the degree of polymerization and may have a value of from 1 to 12 or from 1 to 10 , and most preferably, from 1.2 to about 1.6 or from 1.3 to 1.5. In still another embodiment of the invention, the nonionic surfactant used is cocamide monoethanolamine (cocamide MEA), glyceryl monostearate and/or polyglycerol esters like polyglyceryl-8 caprylate, polyglycerol-8 caprate, polyglyceryl-8 myristate, polyglyceryl-8 palmitate, polyglyceryl-9 caprylate, polyglycerol-9 caprate, polyglyceryl-9 laurate, polyglyceryl-9 myristate, polyglyceryl-9 palmitate or a mixture thereof. When used, these nonionics often make up from 0.01 to 2% or from 0.02 to 1.85% or from 0.03 to 1.5% (or from 0.03 to 1 %) by weight of the wash composition. In another embodiment, the nonionic used is glyceryl monostearate at levels from 0.01 to 0.5 or from 0.01 to 0.2 or from 0.01 to 0.07% by weight of the lamellar wash composition. In still another embodiment, the lamellar wash composition of the present invention is free of nonionic surfactant, i.e., 0.0% by weight nonionic surfactant.

In still yet another embodiment of the invention, cationic surfactants may optionally be used in the lamellar wash composition described herein.

One class of optional cationic surfactants includes heterocyclic ammonium salts such as cetyl or stearyl pyridinium chloride, alkyl amidoethyl pyrrylinodium methyl sulfate, and lapyrium chloride.

Tetra alkyl ammonium salts are another useful class of cationic surfactants suitable for optional use. Examples include cetyl or stearyl trimethyl ammonium chloride or bromide; hydrogenated palm or tallow trimethylammonium halides; behenyl trimethyl ammonium halides or methyl sulfates; decyl isononyl dimethyl ammonium halides; ditallow (or distearyl) dimethyl ammonium halides, and behenyl dimethyl ammonium chloride.

Still other types of cationic surfactants that may be used are the various ethoxylated quaternary amines and ester quats. Examples include PEG-5 stearyl ammonium lactate (e.g., Genamin KSL manufactured by Clariant), PEG-2 coco ammonium chloride, PEG-15 hydrogenated tallow ammonium chloride, PEG 15 stearyl ammonium chloride, dipalmitoyl ethyl methyl ammonium chloride, dipalmitoyl hydroxyethyl methyl sulfate, and strearyl amidopropyl dimethylamine lactate.

Even other useful cationic surfactants suitable for optional use include quaternized hydrolysates of silk, wheat, and keratin proteins, and it is within the scope of the invention to use mixtures of such surfactants.

If used, cationic surfactants will typically make up no more than 1 .0% by weight of the lamellar wash composition. When present, they often make up from 0.01 to 0.7%, and more typically, from 0.1 to 0.5% (or 0.1 to 0.3%) by weight of the composition. In still another embodiment of the invention, the lamellar wash composition of the present invention is free of cationic surfactant, i.e., 0.0% by weight cationic surfactant. Amphoteric surfactants may optionally be included in the wash composition. Illustrative examples include cocoyl amine oxide, lauramine oxide, myristamine oxide, palmitamine oxide, stearamine oxide, oleamine oxide, cocamidopropyl amine oxide, lauryl amidopropyl amine oxide, myristyl amidopropyl amine oxide, palmityl amidopropyl amine oxide, stearyl amidopropyl amine oxide, oleamidopropyl amine oxide or a mixture thereof.

Additional amphoteric surfactants suitable for optional use include imidazolines, sodium acyl amphoacetates, sodium acyl amphopropionates, disodium acyl amphodiacetates and disodium acyl amphodipropionates where the acyl (i.e., alkanoyl group) can comprise a C₇-Ci₈ alkyl portion.

Illustrative examples of the amphoteric surfactants suitable for use include sodium lauroamphoacetate, sodium cocoamphoacetate, sodium lauroamphoacetate, sodium cocoamphoacetate, cocamphodipropionate or a mixture thereof.

In an embodiment of the invention, when used, the amphoteric selected can be at least 80%, and preferably, at least 85%, and most preferably, at least 90% (or 90 to 100% or 94 to 100% or 94 to 98% or 100%) by weight amine oxide whereby such amine oxide can have the formula: R^x-N⁺(R^y)₂-O- where R^x is a Cg-20 alkyl, and preferably, a C10-18 alkyl, and most preferably, a C12-18 alkyl (or C12-16 alkyl) and R^y is H ora C-i-6 alkyl or C-i.₄alkyl or'C-1.3 alkyl or Ci.₂alkyl or-CH₃. In another embodiment of the invention, the preferred amine oxide selected is cocoyl amine oxide, lauramine oxide, myristamine oxide, palmitamine oxide, stearamine oxide, oleamine oxide or a mixture thereof.

If used, amphoteric surfactant will make up from 0.01 to 3% or from 0.04 to 2% or from 0.05 to 1 .75% by weight of the wash composition.

In an embodiment of the invention, thickeners are included in the lamellar wash composition of the invention. Thickener used comprises less than 1.5% and preferably, less than 1.25%, and most preferably, less than 1 % (or less than 0.5% or from 0.001 to 0.9% or 0.0%) by weight quaternized hydroxyethyl cellulose polymer having a molecular weight from 195 to 825 kDa (or a molecular weight from 185 to 950, or from 170 to 900, or from 150 to 1000 kDa) based on total weight of thickener in the wash composition. Such thickener classified as a quarternized hydroxyethyl cellulose like, for example, polyquaternium-67 will make up less than 1 .5% by weight of total weight of thickener in the lamellar wash composition. In another embodiment of the invention, no polyquaternary-67 (i.e., 0.0% by weight) is used in the lamellar wash composition of the present invention. Thickeners that may be selected for use include polymeric carbohydrate thickeners like nonmodified starch granules, in general, like potato starch, waxy maize starch as well as simple corn starch, i.e. , a starch that gelatinizes at around 75°C. Pure-Gel® starches from Grain Processing Corporation are chemically modified corn starch granules having a gelatinization temperature at about 53°C and are often considered for use. Modified and/or nonmodified starch granules with gelatinization temperatures from 30° to 85°C, and preferably, from 30° to 80°C, and most preferably, from 35 to 75°C are suitable for inclusion as the polymeric carbohydrate thickening agent in the lamellar wash compositions of the invention. In general, and notwithstanding the starch selected for use, it is typically preferred that the granules of the polymeric carbohydrate selected, upon use in the final lamellar wash composition, swell at least 200%, and preferably at least 400%, and more preferably, at least 600%, and most preferably, at least 800% by volume in the lamellar wash composition to form swollen starch gel particles with a size in the range of 2 to 300 micrometers, or preferably, from 3 to 275 microns, and most preferably, from 4 to 245 microns. Examples of thickeners suitable to select are Pure Gel B990, Pure Gel B992, Pure Gel B980 and Pure Dent starches made commercially available from Grain Processing Corporation. Additional polymeric carbohydrates suitable for use (i.e., starch granules) are National™ 1545, Amioca corn starch, Clearjel, National 1333, Colflo 67, Novation 1600, Novation 2700 or Purity 420 made available from Ingredion. Chemically modified starch granules are also suitable for use. Starch granules modified with nonionic hydrophilic groups such as hydroxyethyl or hydroxypropyl and/or ionic groups such as phosphate, carboxylate, sulfate or sulfonate and dialkyl/trialkyl amino groups can also be suitable for use.

Even other polymeric carbohydrates suitable for use are water soluble starches like Ultra-Sperse®, tapioca and waxy maize starch, and National 1215 pregelatinized unmodified corn starch or mixtures thereof. Still others include Structure® ZEA and Structure® (2143 or 6892), hydroxypropyl modified corn starch, or Structure® XL, a cross-linked pregelatinized hydroxypropyl starch phosphate or mixtures thereof, whereby the same are also available commercially from Nouryon. Others like BASF and Cargill provide Cosmedia® HP Starch and StarDesign™ Care, respectively. Such hydroxypropyl starch phosphate has a molecular weight of 238 (C27H₄₈OIO), Cas No. 53124-00-8.

Other useful thickeners that can be used include carbohydrate gums such as cellulose gum, microcrystalline cellulose, cellulose gel, hydroxyethyl cellulose, hydroxypropyl cellulose, sodium carboxymethylcellulose, hydroxymethyl or carboxymethyl cellulose, methyl cellulose, ethyl cellulose, guar gum, gum karaya, gum tragacanth, gum Arabic, gum acacia, gum agar, xanthan gum and mixtures thereof; modified and nonmodified starch granules often with gelatinization temperatures between 30 to 85°C. Additional thickeners that also may be selected for use include Versathix™ (PEG-150 Pentaerythrityl Tetrastearate (and) PPG-2 Hydroxyethyl cocamide and water), Aristoflex AVC (ammonium acryloyldimethyltaurate/VP copolymer), Carbomer such as Carbopol 980 (crosslinked polyacrylic acid), Carbopol® Ultrez 10 and 20 (hydrophobically modified crosslinked polyacrylic acid); alkaline soluble emulsion polymers such as Aculyn 28, Acuyln 22 or Carbopol Aqua SF1 ; cationic polymer such as modified polysaccharides including cationic guar available from Solvay Novecare under the trade name Jaguar® C13S, Jaguar® C14S, Jaguar® C17, or Jaguar® C16; cationic modified cellulose such as UCARE™ Polymer JR 30M from Dow; N-Hance™ 3000, N-Hance™ 3196, N-Hance™ GPX 215 or N- Hance™ GPX 196 from Ashland, Inc.

In an embodiment, the thickener used is a cationic guar polymer, i.e. , guar hydroxypropyltrimonium chloride, (including those with a charge density from 0.8 to 8, and preferably, from 1 to 7.5 or from 1.2 to 7.2 where molecular weight (Mn) ranges from 8,000 to 10,000 million, or from 9,000 to 7 million or from 9,500 to 5.5 million) in combination with a starch (preferably a sodium hydroxypropyl starch phosphate) at a weight ratio of cationic guar polymer to starch of 1 :20 to 1 :5 or from 1 :15 to 1 :6 or from 1 :13 to 1 :7 or from 1 :12 to 1 :8 or from 1 :11 to 1 :9. Preferred guar hydroxypropyltrimonium chloride is Jaguar® C S (guar gum 2-hydroxy-3-trimethylamino propyl ether chloride, CAS No. 65497-29-2)

In yet another embodiment of the invention, less than 1 %, and preferably, less than 0.5%, and most preferably, less than 0.25% or less than 0.15% or 0.0% by weight of the thickener used in the wash composition is acrylate-based such as those referred to as an acryloyldimethyltaurate/VP copolymer.

The total amount of thickener used often makes up from 1 .75 to 6%, and preferably, from 1 .95 to 5.5%, and most preferably, from 2.25 to 5.5% (or from 2.75 to 5% or from 2.75 to 4.75% or from 2.75 to 4.5 or from 2.95 to 4.5%) by weight of the lamellar wash composition.

In an embodiment of the invention, the total amount of acyl isethionate used exceeds the total amount of acyl taurate used by 20% or less or by 10% or less. In still another embodiment, the total amount of acyl isethionate used exceeds the total amount of acyl taurate by 0.5 to 4% or by 1 to 3% by total weight of such anionic surfactants. In another embodiment, the amount of acyl isethionate does not exceed the amount of acyl taurate used, and in a further embodiment, the total weight of acyl isethionate and acyl taurate used in the lamellar wash composition is from 50 to 70%, and preferably, from 50 to 65%, and most preferably, from 52 to 62% (or from 54 to 60%) by weight acyl taurate. In another embodiment, the wash composition of the present invention can comprise an electrolyte such as MgCI₂, CaCI₂, KCI, NaCI or a mixture thereof. In even another embodiment, such electrolyte may be provided alone or with a glycol having the formula:

H-(OC(CH₃H)CH₂)_U-OH (IX) where u is an integer from 6 to 12, and preferably, 7 to 11 , or from 8 to 10, and most preferably, 9 (polypropylene glycol 9 (PPG-9)).

Total amount of electrolyte in the lamellar wash composition is typically less than 3.25%, and preferably, less than 3%, and most preferably, less than 2.5% (or from 0.5 to 2.3% or from 0.75 to 2.25% or from 1 to 2.2%) by weight electrolyte in the wash composition.

Occlusives are suitable and often desired for use in the wash compositions of this invention, the same include any oils allowed for topical application via a wash composition, and preferably, an oil suitable to contact skin that is natural and sustainable. The occlusive when used will typically include a mixture of occlusives, and that is, a first occlusive having a droplet size from 1 to 250 microns, and preferably, from 1 to 100 microns, and most preferably, from 1 to 50 microns (or from 2 to 40 microns or from 2 to 35 microns or from 2 to 10 microns or from 2.5 to 8 microns), and a second occlusive (not identical to the first occlusive as herein defined) having a droplet size that is less than 1 micron or from 25 to 950 nm, and preferably, from 40 to 800 nm, and most preferably, from 50 to 750 nm (or from 65 to 700 nm, or from 70 to 650 nm, or from 80 to 650 nm, or from 120 to 625 nm).

The first occlusive having a droplet size from 1 to 250 microns can include silicone oils and/or mineral oil, but preferably includes oils that are naturally sourced and sustainable like, arachis oil, castor oil, coconut oil, corn oil, cotton seed oil, olive oil, rapeseed oil, safflower seed oil, sesame seed oil, soybean oil, hydrogenated soybean oil, avocado oil, macadamia nut oil, argan oil, pomegranate oil, argan Moroccan oil, blueberry oil, raspberry oil, walnut oil, pecan oil, peanut oil, bayberry oil, mango seed oil, jojoba oil, hydrolyzed jojoba oil, mixtures thereof or the like. If a silicone oil is optionally used, the same can include, for example, PEG-3 Dimethicone, PEG-8 Dimethicone, PEG-9 Dimethicone, PEG-10 Dimethicone, PEG-11 Methyl ether dimethicone, PEG-12 Dimethicone, PEG- 14 Dimethicone, PEG-17 Dimethicone, PEG-32 Dimethicone mixtures thereof or the like.

In an embodiment of the invention, the oil selected for use comprises a mixture of soybean oil (liquid at 25°C) and hydrogenated soybean oil (solid at 59°C, melting point 61-66°C) where the soybean oil and hydrogenated soybean oil are present at a weight ratio of 1 :4 to 4:1 , and preferably, from 1 :3 to 3:1 , and most preferably, from 1 :2 to 2:1 . In another embodiment of the invention, the hydrogenated soybean oil makes up from 48 to 70%, and preferably, from 52 to 68% and most preferably, from 55 to 65% by weight of the total weight of the mixture of soybean oil and hydrogenated soybean oil used in the lamellar wash composition.

In still another embodiment of the invention, the lamellar wash composition of the present invention comprises from 0.9 to 8%, and preferably, from 1.0 to 7.5%, and most preferably, from 1.5 to 6.0% (or from 1.75 to 5.8% or from 2.0 to 5.5% or from 3 to 5.5%) by weight of the first occlusive based on total weight of the lamellar wash composition. In yet another embodiment, the oil used in the first occlusive is at least 70%, or at least 80%, or 90 to 100% or 100% by weight of a mixture of soybean oil and hydrogenated soybean oil. In even another embodiment, the wash composition of the present invention comprises less than 0.2% by weight oil or no (0.0% by weight) oil derived from petroleum. In still another embodiment, when oil is used, less than 0.5% or 0.0% by weight of the total weight of the oil used is a silicone oil.

As to the first occlusive, the same is homogenously dispersed in the lamellar wash composition (using conventional apparatus and moderate shear with temperature varying from 30 to 85°C, often 45 to 75°C) forming oil droplets or particles having a size from 1 to 250 microns, and preferably, from 1 to 100 microns, and most preferably, from 1 to 50 microns in size (or from 2 to 40 microns or from 2 to 35 microns or from 2 to 10 microns or from 2.5 to 8 microns in size).

As to the second occlusive and as defined, such occlusive is not identical to the first occlusive and can include compositions traditionally classified as petroleum jelly, CAS No. 8009-03-08, whereby such occlusive is a combination of hydrocarbons mainly having carbon chains longer than 25. Therefore, petroleum jelly is characterized as a composition made predominately of the paraffin series that can be obtained by, for example, dewaxing lubricating oil stock (or crude oil refining) whereby the same melts at temperatures from 35 to 72°C (more often 40 to 70°C) and boils at a temperature of 285°C or higher and often at a temperature between 295 and 325°C. Such occlusive is characterized as a semi-solid at room temperature (22°C) and spreads well topically at skin’s natural temperature of 33 to 37°C. Free of polycyclic aromatics, the most well-known and best produced petroleum jelly is sold under the brand name Vaseline®. As used herein, petroleum jelly and petrolatum are meant to be the same. Semi-solid, as used herein, means soft like Vaseline®, not pourable at room temperature but spreadable on skin at room temperature.

Other materials suitable for use as second occlusive, and often desired, are those which are made to mimic petroleum jelly (“petroleum jelly substitute” or “substitute”) but are not derived from petroleum or any biproduct or residue recovered from the processing of the same such as processing for gas production. They are, therefore, preferably plant-based, sustainable, soft solids that melt at temperatures similar to those described for petroleum jelly (more often from 29 to 65°C). In an embodiment of the invention, the petroleum jelly substitute used has a melting point from 30 to 62°C or from 30 to 60°C or from 30 to 55°C or from 30 to 50°C or from 30 to 45°C.

In a further embodiment of the invention, the petroleum jelly substitute suitable for use can be a vegetable-based substitute comprising 10 to 60% by weight of a triglyceride; 5 to 40% by weight of castor oil; 10 to 50 percent by weight glycerin; and 0.5 to 10% by weight of polyglyceryl ricinoleate.

In such vegetable-based substitute, triglycerides used may include caprylic/capric triglyceride, coconut oil, sunflower seed oil, safflower oil, cottonseed oil, olive oil or mixtures thereof. Particularly desired is caprylic/capric triglyceride, coconut oil, or both.

Amounts of the triglyceride may range from 10 to about 60%, and preferably, from 20 to 50%, and most preferably, from 30 to 45% by weight of the second occlusive (i.e. , vegetable-based substitute).

Another component suitable for use in the vegetable-based substitute is castor oil, and particularly, a hydrogenated castor oil, a castor seed oil or combinations thereof. Amounts of castor oil may range from 5 to 40%, and preferably, from 10 to 30%, and most preferably, from 15 to 25% by weight of the second occlusive, and as calculated herein castor oil is not meant to be included in the triglyceride total.

A further useful component in such substitute is glycerin. Amounts of the same may range from 10 to about 50%, and preferably, from 20 to 40%, and most preferably, from 25 to 35% by weight of the substitute.

An additional component desired in the vegetable-based substitute (i.e., second occlusive) is a polyglyceryl ricinoleate. The number of glycerol repeating units may range from 2 to 20, and preferably, from 4 to 10, and most preferably, from 4 to 8 or about 6 repeating units. The term "ricinoleate" is meant to include mono- and poly-ricinoleate esters of glycerol. When the ricinoleate is in poly form, the number of mono ricinoleate units can range from 2 to 20, and preferably, from 2 to 10, or from 2 to 5. Most preferred is polyglyceryl-6 polyricinoleate which has an INCI name of polyglyceryl-6 polyricinoleate. Amounts of this material in the substitute may range from 0.5 to 10%, and preferably, from 1 to 8%, and most preferably, from 4 to 6% by weight of the substitute.

In such substitute it is often desirable to include a fatty acid material selected from the group consisting of trihydroxystearin and combinations thereof. Amounts of these materials, when present, may range from 0.1 to 15%, and preferably, from 0.5 to about 10%, and most preferably, from 2 to 8 percent, or from 3 to 6% by weight of the substitute. Such vegetable-based substitute is substantially free of water, and therefore, comprises from 0 to 5%, and preferably, from 0 to 2%, and most preferably, from 0 to 1 % or 0.0% by weight water based on total weight of the substitute (i.e., second occlusive). An additional description of the vegetablebased substitute suitable for use in the present invention may be found in U.S. Patent No. 8,524,211 , the disclosure of which is incorporated herein by reference.

Additional materials that mimic petroleum jelly, i.e., substitutes, suitable for use as second occlusive and that may be included with other substitutes or used as the sole substitute include those generally classified as natural oil substitutes. These suitable second occlusives are the esterification product of from 55 to 85% by weight of a fully hydrogenated castor oil and 15 to about 45% by weight of C₈-22 branched or straight chain fatty acid.

In another embodiment, such substitute includes the esterification product of from 55 to about 85% by weight of fully hydrogenated castor oil, 15 to 45 % by weight of C₈-22 branched or straight chain fatty acid and 5 to 15% by weight of hydrogenated natural oil in addition to castor oil.

Illustrative examples of such natural oils suitable for use in the substitutes include canola oil, avocado seed oil, pumpkin seed oil, rapeseed oil, coconut oil, com oil, cottonseed oil, olive oil, palm oil, peanut oil, walnut oil, safflower oil, sesame oil, soybean oil, sunflower oil, linseed oil, palm kernel oil, tung oil, jatropha oil, mustard oil, camelina oil, penny cress oil, hemp oil, algal oil, jojoba oil, lard, tallow, poultry fat, yellow grease, fish oil or a mixture thereof.

These substitutes, again, mimic petrolatum or petroleum jelly. The same typically possess a drop melting point measured by AOCS Standard Procedure Cc 18-80 of between 30 to 70°C and can possess an acid value of less than about 20.0, between 2% to about 7% of combined monoglycerides and diglycerides, an iodine value of less than about 3.0 or any combination of such characteristics. In an embodiment of the invention, such substitute comprises less than 15%, and preferably, less than 10%, and most preferably, less than 5% (or 0.001 to 3.2% or 0.01 to 2.5% or 0.0%) by weight palm kernel oil or coconut oil or both.

In even another embodiment, these natural oil substitutes comprise less than 10% by weight of total monoacylglycerides and diacylglycerides and may comprise from 1 to 8% of a mixture of the same. Such types of natural oil substitutes are described in WO 2309137 A1 , the disclosure of which is incorporated herein by reference.

Other substitutes that may be used in or as the second occlusive include those generally described as: A natural substitute comprising the esterification product of a pre-esterification mixture that includes 0.1 to 20% by weight of a fattv acid dimer, from 5% to 30% by weight of a C₈-22 fattv acid, and 65% to 95% of a hydrogenated natural oil, and the petrolatum substitute has an acid value of less than 25.0 as described in WO 22150812 A1 , the disclosure of which is incorporated herein by reference;

A natural oil-based petrolatum composition comprising the esterification product of a pre-esterification mixture that comprises 5 to 35% by weight of a fatty acid dimer, 20 to 55% by weight C₈-22 fatty acid substituted with one or more C1.3 alkyl substituents, about 5 to 20% by weight glycerol, and about 20 to 40% by weight hydrogenated natural oil, wherein the natural based petrolatum product has an acid value of less than 10.0 as described in WO 22150813 A1 , the disclosure of which is incorporated herein by reference;

A natural oil-based petrolatum composition comprising the esterification product of a pre-esterification mixture that includes about 15 to 25% by weight fatty acid dimer, based on total weight of the pre- esterification mixture; 15 to 25% by weight glycerin, based on total weight of the pre-esterification mixture; and 55 to 70% by weight of hydrogenated natural oil, based on total weight of the pre- esterification mixture; wherein the natural oil-based petrolatum product has an acid value of less than about 5.0 as described in WO 22150814 A1 , the disclosure of which is incorporated herein by reference; and

A natural oil-based petrolatum composition comprising the esterification product of a pre-esterification mixture that includes 0.1 to 40% by weight fatty acid dimer, 60 to 99.9% by weight of one or more components selected from the group consisting of C₂-6 polyols, natural oils, hydrogenated natural oils, fatty acids, and acyl glycerols, wherein the natural based petrolatum product has a cone penetration value of greater than 10 and a polydispersity index greater than 1.3 as described in WO 221150815 A1 , the disclosure of which is incorporated herein by reference.

In an embodiment of the invention, the second occlusive is present in the lamellar wash composition of the invention as droplets or particles that are less than 1 micron in size, and therefore, in the nanometer (nm) size range. Typically, such second occlusive is present at a size range from 25 to 950 nm, and preferably, from 40 to 800 nm, and most preferably, from 50 to 750 nm (or from 65 to 700 nm, or from 70 to 650 nm, or from 80 to 600 nm, or from 120 to 625 nm). Such measurements for all droplet sizes (volume moment mean diameter D[4,3]) herein described may be obtained following the conventions in ASTM E 799, Practice for Determining Data Criteria and Processing for Drop Size Analysis. In another embodiment and as to such second occlusive, the same can be provided as an ingredient when making the lamellar wash composition within a water continuous emulsion of submicron droplets within the defined size ranges. Such water continuous emulsion typically comprises from 30 to 85% or from 35 to 80%, and preferably, from 35 to 75% or from 35 to 72%, and most preferably, from 40 to 70% (or from 40 to 65% or from 45 to 65% or from 55 to 65%) by weight occlusive and from 1 to 15%, and preferably, from 2 to 12%, and most preferably, from 3 to 10% (or from 4 to 9.25% or from 5 to 8%) by weight emulsifier (having an HLB of 8 or higher and typically from 10 to 20 or from 10 to 16). Suitable emulsifiers that may be used include glyceryl monostearate, sorbitan stearate, glyceryl cocoate, cetearyl glucoside, PEG-8 oleate or a mixture thereof. In an embodiment of the invention, emulsifier used includes at least one of the anionic surfactants in the lamellar wash composition. Preferred is an isethionate, taurate or both. In yet another embodiment, the emulsifier used in the emulsion is sodium lauroyl isethionate and sodium methyl lauroyl taurate in a weight ratio from 1 :4 to 4:1 or from 1 :3 to 3:1 or from 1 :2 to 2:1 or from 1.5:1 to 1 :1.5 or from 1 :1. Water makes up the balance of such emulsion.

In an even another embodiment, the second occlusive can comprise from 5 to 25%, or from 10 to 25% or from 6 to 12% by weight shea butter, based on total weight of the second occlusive. Such an emulsion with submicron droplets may be made mixing a first emulsion with heat (typically 50 to 70°C to produce a macroemulsion) followed by a pass through a high pressure device, such as a high pressure Sonolator at a pressure of greater than or equal to 1000 pounds per square inch (6.9 Megapascal (MPa)), and preferably, from 1 ,500 to 5,000 psi (10.3 to 34.5 MPa) , or from 1 ,500 to 4,500 psi (10.3 to 31 MPa), or from 2,000 to 4,000 psi (13.8 to 27.6 MPa). A commercially available Sonolator may be used to make such emulsion with submicron droplets (i.e., nanoemulsion) like those made available by Sonic Corporation.

Such second occlusive can have an acid value from 2.8 to 6.2 and a viscosity from 375 to 1150 mPa- s at 40°C and 70 to 225 mPa-s at 50°C. In an embodiment of the invention, a preferred second occlusive substitute (or portion of second occlusive) suitable for use is sold under the name BOTANIJELLY™ and made commercially available by Cargill (INCI hydrogenated vegetable glycerides). Other available occlusives that may be used as or included as substitute in the second occlusive include those sold commercially by Sonneborn under the SonneNatural™ name and including the J-207, NXG, and PF-1 varieties.

In still another embodiment, total occlusive (i.e., weight percent of first and second occlusive, total occlusive) suitable for use in the lamellar wash composition of the present invention is less than 8.25%, and preferably, less than 8%, and most preferably, from 2.8 to 8% (or from 3 to 7.5% or from 3.5 to 7% or from 4 to 7% or from 4.25 to 6.5% or from 4.5 to 6% or from 4.5 to 5.5%) by weight.

In another embodiment of the invention, the wash composition of the present invention comprises from 0.08 to 4.2%, and preferably, from 0.08 to 4% and even more preferably, from 0.1 to 3.35%, and most preferably, from 0.1 to 3.2% (or from 0.1 to 3.1 % or from 0.15 to 1.95% or from 2.2 to 3.4% or from 0.15 to 1.5% or from 0.15 to 1% or from 0.2 to 0.65% or from 0.2 to 0.5%) by weight of the second occlusive. As to the first occlusive, and in another embodiment, the same can make up from 2.25 to 6% by weight of the wash composition.

In still another embodiment, the amount of first occlusive in the lamellar wash composition is present at from 2.2 to 30, and preferably, from 7 to 26 and most preferably, from 12 to 25 (or from 15 to 25 or from 16 to 24 or from 18 to 22) times more, by weight, the amount of second occlusive in the lamellar wash composition. In yet another embodiment, no (0.0% by weight) occlusive used in the present invention is derived from petroleum.

In still another embodiment of the invention, the second occlusive comprises less than 12%, and preferably, less than 10%, and most preferably, less than 8% (or less than 6% or less than 4% or from 0.001 to less than 3% or 0.0%) by weight of any mix of soybean oil and hydrogenated soybean oil.

The wash composition of the present invention can include lamellar structurants like C₆ -Ci₄ acids, C₆ - C14 alcohols, Ce -Ci4 amides (i.e., hydroxylated or amide derivatives of the acids). Often desired for use are caproic, caprylic, capric, lauric or myristic acid or mixtures thereof as well as the alcohol or amide derivatives of the same. In an embodiment of the invention, lauric acid, myristic acid or both are used as structurant with lauric acid often being preferred.

When used, the lamellar structurant makes up from 1 .5 to 7%, and preferably, from 2 to 6.5%, and most preferably, from 2.5 to 6% (or from 3 to 5.5% or from 3.5 to 5% or from 3.75 to 4.75%) by weight of the lamellar wash composition. For the avoidance of doubt and, again, lamellar structurant as used herein means a component added to the wash composition to aid in inducing surfactants to arrange as micelle plates or layers, yielding a translucent or opaque lamellar wash composition.

Polyols (i.e., humectants) are suitable for optional use in the lamellar wash compositions of the present invention whereby the same are limited only to the extent that they are suitable for use in a topical wash composition. Illustrative and nonlimiting examples of the polyols suitable for use in the present invention include sorbitol, glycerol, mannitol, xylitol, maltitol or mixtures thereof. In an embodiment of the invention, the polyol used is at least 50% by weight glycerol, based on total weight of the polyol used in the wash composition. In another embodiment of the invention, the polyol used is all glycerol (100% by weight). Polyol, when used, will typically make up from 0.25 to 12% by weight of the wash composition, and preferably, from 0.5 to 10% by weight of the wash composition, and most preferably, from 0.65 to 8% (or from 0.75 to 6% or from 0.75 to 5% or from 0.8 to 1 .75%) by weight of the lamellar wash composition.

Water typically makes up from 40 to 90%, and preferably, from 40 to 85%, and most preferably, from 55 to 75% by weight of the wash composition or from 60 to 75% or from 64 to 78% or from 65 to 73% by weight of the lamellar wash composition.

Adjusters suitable to modify/buffer the pH may be used. Such pH adjusters include triethylamine, NaOH, KOH, H₂SO₄, HCI, C₆ H₈ O₇ (i.e. , citric acid) or mixtures thereof. The pH adjusters are added at amounts to yield the desired final pH. The pH values may be assessed with commercial instrumentation such as a pH meter made commercially available from Thermo Scientific®. As noted, the pH of the lamellar was composition of the present invention is from 5.75 to 8.25, and preferably, from 5.9 to 8, and most preferably, from 6 to 7.5 (or from 6 to 7.25 or from 6.1 to 7 or from 6.2 to 6.9).

As herein noted, optional water-soluble skin benefit agents suitable for use in the lamellar wash composition of this invention are limited only to the extent that they are capable of being topically applied, and able to dissolve in the wash composition at the desired pH.

Illustrative examples of the skin benefit agents suitable to include in the water portion of the lamellar wash composition are acids, like amino acids, such as arginine, valine or histidine. Additional water- soluble benefit agents suitable for use include vitamin B₂, niacinamide (vitamin B₃), vitamin B₅ (Panthenol), vitamin B₆, folic acid (vitamin B9), vitamin C, mixtures thereof or the like. Water soluble derivatives of such vitamins may also be employed. For instance, vitamin C derivatives such as ascorbyl tetraisopalmitate, magnesium ascorbyl phosphate and ascorbyl glycoside may be used alone or in combination with each other. Other water-soluble benefit agents suitable for use include 4-ethyl resorcinol, water soluble extracts of sage, aloe vera, green tea, grapeseed, thyme, chamomile, yarrow, cucumber, liquorice, rosemary extract or mixtures thereof. Water soluble sunscreens like ensulizole (phenylbenzimidizole sulfonic acid), disodium phenyl dibenzimidazole tetra sulfonate or mixtures thereof may also be included. Total amount of optional water-soluble benefit agents (including mixtures) when present in the lamellar wash composition may range from 0.001 to 15%, preferably from 0.001 to 10%, and most preferably, from 0.01 to 8% (or from 1 to 6% or from 1 to 3%) by weight of the wash composition. It is also within the scope of the present invention to optionally include oil soluble benefit agents (i.e., non-water-soluble agents defined as less than 1 .0 g of such benefit agent (solute) can be dissolved in 100 mL of 25°C water (solvent) at atmospheric pressure The only limitations with respect to such oil soluble benefit agents are that the same are suitable to provide a benefit when topically applied to a surface, and for example, skin.

Illustrative examples of the types of oil soluble benefit agents that may optionally be used in the compositions of this invention include components like stearic acid, vitamins like Vitamin A, D, E and K (and their oil soluble derivatives), sunscreens like ethylhexylmethoxycinnamate, bis-ethyl hexyloxyphenol methoxyphenol triazine, 2-ethylhexyl-2-cyano-3,3-diphenyl-2-propanoic acid, drometrizole trisiloxane, 3,3,5-trimethyl cyclohexyl 2-hydroxybenzoate, 2-ethylhexyl-4- hydroxybenzoate or mixtures thereof.

Other well-known sunscreens suitable for use include Mexoryl 400 (methoxypropylamino cyclohexenylidene ethoxyethylcyanoacetate), Mexoryl XL (drometrizole trisiloxane), Mexoryl SX (terephthalylidene dicamphor sulfonic acid), octocrylene (2-ethylhexyl 2-cyano-3,3-diphenylprop-2- enoate) or mixtures thereof.

Other optional oil soluble benefit agents suitable for use include resorcinols like thiamidol (isobutylene thiazolyl resorcinol), 4-hexyl resorcinol, 4-phenylethyl resorcinol, 4-cyclopentyl resorcinol, 4- cyclohexyl resorcinol 4-isopropyl resorcinol or a mixture thereof. Also, 5-substituted resorcinols like 4-cyclohexyl-5-methylbenzene-1 ,3-diol, 4-isopropyl-5-methylbenzene-1 ,3-diol, mixtures thereof or the like may be used. The 5-substituted resorcinols, and their synthesis are described in commonly assigned U.S. Published Patent Application No. 2016/0000669A1.

Even other oil soluble actives suitable for use include omega-3 fatty acids, omega-6 fatty acids, climbazole, farnesol, ursolic acid, myristic acid, geranyl geraniol, cocoyl hydroxyethyl imidazoline, hexanoyl sphingosine, petroselinic acid, conjugated linoleic acid, terpineol, thymol mixtures thereof or the like.

In an embodiment of the invention, the optional oil soluble benefit agent used is a retinoic acid precursor. In one embodiment of the invention, the retinoic acid precursor is retinol, retinal, retinyl propionate, retinyl palmitate, retinyl acetate or a mixture thereof. Retinyl propionate, retinyl palmitate and mixtures thereof are typically preferred. Still another retinoic acid precursor suitable for use is hydroxyanasatil retinoate made commercially available under the name Retextra® as supplied by Molecular Design International. The same may be used in a mixture with the oil soluble actives described herein. When optional oil soluble active is used in the composition of the invention, such active typically makes up from 0.001 to 2%, and preferably, from 0.001 to 1.5%, and most preferably, from 0.05 to 1 % (or from 0.06 to 0.85%) by weight of the lamellar wash composition.

Conventional preservatives can desirably be incorporated into the wash composition to protect against the growth of potentially harmful microorganisms. Cosmetic chemists are familiar with appropriate preservatives and routinely choose them to satisfy the preservative challenge test and to provide product stability. While traditional preservatives may be used, such as hydantoin derivatives, isothiazolinones, methyl paraben and/or propyl paraben, as described herein the lamellar wash composition of the present invention is preferably substantially free of the same. Other preservatives suitable for use may include iodopropynyl butyl carbamate, phenoxyethanol, hydroxyacetophenone, ethylhexylglycerine, hexylene glycol, imidazolidinyl urea, sodium dehydroacetate, benzyl alcohol, sodium benzoate or mixtures thereof. Even other preservatives suitable for use include sodium dehydroacetate, chlorophenesin and decylene glycol. The preservatives should be selected having regard for the use of the composition and possible incompatibilities between the preservatives and other ingredients in the emulsion. Preservatives are preferably employed in amounts ranging from 0.01 % to 2.0% by weight of the total weight of the wash composition. Also preferred is a preservative system with hydroxyacetophenone alone or in a mixture with other preservatives. Use of common emollients classified as vicinal diols, like 1 ,2-octane diol (or other vicinal alkane diols) are also suitable for use with the preservatives described herein and typically at amounts ranging from 0.15 to 1.5%, and preferably, from 0.2 to 1.25%, and most preferably, from 0.25 to 1 % (or 0.25 to 0.8%) by weight of the lamellar wash composition. In another embodiment of the invention, another preservative suitable for optional use in the present invention comprises capryloyl glycine, undecylenoyl glycine or a mixture thereof.

In an embodiment of the invention, the wash composition is substantially free of hydantoins, parabens, silicones and isothiazolinones as described therein. In another embodiment, the lamellar wash composition of the present invention comprises less than 0.2% by weight silver of a compound, and preferably, less than 0.1 % by weight of a silver compound, and most preferably, no silver compounds such as oxides, nitrates, acetates, carbonates and/or citrates of silver, or the like.

In another embodiment, the lamellar wash composition of the present invention can optionally comprise at least one of benzethonium chloride, benzalkonium chloride, cetrimonium chloride, zinc pyrithione, chloroxylenol, salicylic acid, citric acid, lactic acid, eugenol, terpineol, thymol, selenium sulfide, piroctone olamine, hinokitiol, linalool, cinnamon oil, lemon grass oil, eucalyptus, vanilla extract, mint extract, zinc pyrithione, orange extract, linseed oil, flaxseed oil or a mixture thereof. If any of such are selected for use, the total amount of those selected for use will (in combined total) be from 0.001 to 4.5%, or from 0.01 to 3.5% or from 0.01 to 2.5% or from 0.02 to 1 % by weight of the lamellar wash composition.

In even another embodiment of the invention, at least one of 1 ,2-nonanediol tetrahexyldecyl ascorbate, honokiol, hyaluronic acid, climbazole, linalool, anisic acid, levulinic acid, cetylpyridinium chloride, pyruvic acid, hemp seed oil and/or magnolia bark extract is used in the lamellar wash composition of the invention. If used, the same either alone or in a mixture makes up from 0.001 to 5%, or from 0.01 to 4% or from 0.01 to 3.5% or from 0.02 to 2.7% or from 0.02 to 1 % or from 0.02 to .07% by weight of the lamellar wash composition.

In even another embodiment, the wash composition can optionally be fragrance free and/or comprise less than 0.5% by weight (preferably 0.0% by weight) of dye, phthalate or both.

Fragrances, fixatives, chelators (like EDTA, sodium phytate, tetra sodium glutamate diacetate and/or sodium gluconate) and exfoliants may optionally be included in the wash composition of the present invention. Each of these substances may range from about 0.03 to about 5%, preferably between 0.01 and 3% (or from 0.02 to 1 .2%) by weight of the total weight of the wash composition, if used. To the extent the exfoliants are used, those selected should be of small enough particle size so that they do not impede the performance of any packaging used to dispense the compositions of this invention. The exfoliants should also be small enough so that they are gentle on skin.

Within the wash composition, conventional emulsifiers having an HLB of greater than 8 may optionally be used. Illustrative examples include Tween, 40, 60, 80, polysorbate 20 and mixtures thereof. Typically, and if used such emulsifiers for water continuous wash systems make up from 0.03 to 1.5% by weight of the wash composition.

As to the wash composition of the present invention, the same typically comprises no more than 22.25% (or no more than 19% or no more than 18%) by weight total surfactant, and preferably, from 6 to 17%, and more preferably, from 6 to 16%, and most preferably, from 7 to 15% (or from 7 to 18% or from 8 to 18% or from 12 to 17.5% or from 13 to 17%) by weight total surfactant. In an embodiment of the invention, the wash composition comprises from 11 to 14.5% by weight total surfactant. In another embodiment of the invention, zwitterionic to anionic surfactant are, respectively, at a weight ratio from 1 :0.8 to 1 :3, or from 1 :1 to 1 :2.7, or from 1 :1 to 1 :2.5 or from 1 :1 to 1 :2 or from 1 :1 to 1 :1.9. In even another embodiment of the invention, the wash composition of the present invention comprises stearic acid, terpineol, thymol, chloroxylenol or a mixture thereof. In yet another embodiment, the wash composition of the present invention will comprise any combination of colloidal oatmeal, silica (including hydrated silica and rice silica), ascorbic acid and hyaluronic acid. When used, such ingredients make up (individually or collectively) from 0.001 to 2.5%, and preferably, from 0.01 to 1.5%, and most preferably, 0.1 to 1 % by weight of the lamellar wash composition.

In still another embodiment of the invention, a peroxisome proliferator-activated receptor ligand (“PPAR”) may be included in the wash composition. The PPAR used is preferably a lipid PPAR a (alpha) activator such as a C10-18 saturated fatty acid which is branched or derivatized (i.e., functionalized) with groups like hydroxy groups. The PPAR used can also include a C10-20 monounsaturated fatty acid and C10-22 polyunsaturated fatty acids. Corresponding alcohols, triglycerides and phospholipids of any of the noted PPAR acids are also suitable for use in the present invention. These include petroselinic acid, 12-hydroxystearic acid, stearic acid, cis-parinaric acid, trans-7-octadecenoic acid, cis 5,8,11 ,14,17 eicosapentanoic acid, cis-4,7, 10, 13, 16, 19 docosahexenoic acid, columbinic acid, linolenelaidic acid, ricinolaidic acid, stearidonic acid, 2- hydroxystearic acid, 10-hydroxystearic acid, alpha-linolenic acid, arachidonic acid, cis-11 ,14- eicosadienoic acid, conjugated linoleic acid (c9,t11) or (t10,c12), conjugated linoleic acid (50:50 mix of c9, t11 and t10 c12), coriander acid, linolelaidic acid, monopetroselinic acid, ricinoleic acid, stearolic acid or mixtures thereof.

Additional PPAR alpha activator includes cis-11 ,14,17 eicosatrienoic acid, cis-5 eicosenoic acid, cis- 8,11 ,14 eicosatrienoic acid, hexadecatrienoic acid, palmitoleic acid, petroselaidic acid, trans farnesol, cis 13, 16 docosadienoic acid, cis-vaccenic acid, cis-11 eicosenoic acid, cis-13, 16, 19 docosatrienoic acid, cis-13-octadecenoic acid, cis-15-octadecanoic acid, cis-7, 10, 13, 16 docosatetraenoic acid, elaidic acid, gamma-linolenic acid, geranic acid, geranyl geranoic acid, linoleic acid, oleic acid, petroselinyl alcohol, phytanic acid, pinolenic acid, tridecyl salicylic acid or a mixture thereof.

A further suitable category of PPAR alpha activator includes plant extracts, such as biochanin A (red clover phytoestrogen), chromolaena odorata extract, pomegranate saponifiable hydrolysable extract, buglossoides (stearidonic plant extract), and zanthalene (extract from Sichuan peppercorn). Such PPARs are further described in U.S. Patent No. 6,423,325, the disclosure of which is incorporated herein by reference. In a preferred embodiment, the PPAR selected is 12-hydroxystearic acid, stearic acid or a mixture thereof. When used, the PPAR may make up from 0.01 to 1 .2%, or from 0.03 to 0.8%, or from 0.04 to 0.5%, or from 0.04 to 0.4% by weight of the lamellar wash composition.

In another embodiment of the invention, the wash composition of the present invention comprises a skin prolipid rejuvenating mix comprising a C14-16 fatty acid (preferably palmitic acid), glycerol, and PPAR such as 12-hydroxystearic acid, petroselinic acid, conjugated linoleic acid, stearic acid or a mixture thereof. When used, the weight percent of the skin prolipid rejuvenating mix, collectively, in the wash compositions is from 0.1 to 12%, or from 0.1 to 10%, or from 0.5 to 6.5% or from 0.6 to 2.5%.

In an often preferred embodiment of the invention, at least one of the following optional ingredients selected from the group consisting of carageenan, palmitic acid, 12- hydroxstearic acid, 10- hydroxystearic acid, lauric acid, glycolic acid, mandelic acid, caffeine, squalene, farnesol, neem oil, ceramide (N-acylsphingosine), niacinamide, retinyl propionate, Vitamin E (including tocopherol acetate, tocopheryl linoleate, tocopheryl oleate, tocopheryl nicotinate), Vitamin C (including sodium ascorbyl phosphate, ascorbyl glucoside, ascorbyl palmitate, ascorbyl tetraisopalmitate), 4-ethyl resorcinol, 4-hexyl resorcinol, salicylic acid, terpineol, thymol, thiamidol, benzalkonium chloride, benzethonium chloride, hyaluronic acid, hydrolyzed hyaluronic acid, collagen, pantethenol, climbazole, B1-thiamin, B-2 riboflavin, B-5 pantothenic acid, B6- pyroxidone, B7-biotin, B9, folic acid, pentavitin, magnolia bark extract, ginger extract, tetrahydroxypropyl ethylenediamine and a mixture thereof is used in the lamellar wash composition. If used, and again, those which are oil soluble are present at up to 2% by weight of the lamellar wash composition whereby those which are water- soluble when optionally used may make up to 15% by weight of the lamellar wash composition.

When making lamellar wash composition of the present invention, the desired ingredients may be mixed with conventional apparatus under moderate shear and atmospheric conditions, with temperature ranging from 30 to 85°C whereby shear continues until a homogeneous product is recovered. As previously noted, occlusive having a droplet size of less than 1 micron is preferably provided as an ingredient as an emulsion with submicron droplets (i.e. , nanoemulsion).

When using the wash composition of the present invention, a surface, like skin, is contacted (in no particular order) with water and the lamellar wash composition. Shear is applied subsequently or simultaneously to generate a superior lather and the lathered composition is then rinsed with water. Surprisingly, and when the surface being washed is skin, the consumer experiences a clean wash with skin not feeling tacky and enjoys excellent moisturizing sensory attributes. When washing, the ratio of composition to water is typically from 1 :2 to 2: 1 or from 1 : 1 .5 to 1 .5 : 1 or from 1.1 to 1 or from 1 to 1 .1 or 1 :1 . The water used is often from about 5 to 55°C, or from 7 to 50°C, or from 12 to 50°C.

The packaging for the lamellar wash composition typically is not limited as long as composition can be dispensed. In an embodiment of the invention, the wash composition is sold in a pouch, bottle (glass, metal or plastic), jar, tube, vessel with a pumpable actuator or canister. The packaging preferably is refillable, biodegradable and/or is prepared from recycled materials including postconsumer resins. Other packaging often desired for use includes bottles referred to as paper bottles that typically comprise at least 85% by weight paper.

The Examples are provided to facilitate an understanding of the invention. They are not intended to limit the scope of the claims.

EXAMPLES

Lamellar wash compositions were made by mixing the ingredients identified in the Tables. All compositions had water added to balance. The pH of the lamellar wash compositions ranged from 6.2 to 6.9 and the viscosity was measured as described with a Discovery HR-2 Rheometer. Oil and Water phases were made with mixing, achieved with moderate shear, at atmospheric pressure and with heat supplied from 65 to 75° C. The resulting phases were also mixed under such conditions and all ingredients were subsequently added. Mixing stopped when a homogeneous wash composition was produced. The first occlusive was a mix of soybean oil and hydrogenated soybean oil, ratio 2:3. The second occlusive was provided as submicron droplets (25-950 nm, predominantly between 10-500 nm) in a water continuous emulsion. SLI is sodium lauroyl isethionate and SMLT is sodium methyl lauroyl taurate. All formulae had from 0 to 1 .25% by weight fragrance. The numbers provided are based on total weight of the lamellar wash composition and ingredient as active. Total height of liquid and foam measured at 57.5 mm or greater is considered superior by panelists. Mixing or agitation did not exceed 5 minutes in the analyzer. The starch used was sodium hydroxypropyl starch phosphate. Compositions made according to the invention were stored for 3 months at 45°C. After visual assessment, viscosity remained consistent and no precipitate or flocculation was observed, confirming the compositions according to the invention were very stable.

EXAMPLE I

Lamellar wash compositions (Samples 1-8) were made with the ingredients identified in Table I.

TABLE I

i-Guar hydroxypropyltrimonium chloride. ii-Polyquaternium-67. iii-Samples 3 and 4 (not according to invention), cocamidopropyl betaine, fatty acid-derived and not triglyceride-derived, not comprising C₈-io hydrophobic chain consistent with the invention. iv-12-hydroxystearic acid Samples 1-8, Lather Evaluation

Subsequent to making the Samples identified in Table I, a conventional Kruss Dynamix Foam Analyzer was used to evaluate two inclusion levels of each wash composition, 1 ml and 5 ml levels were assessed. The Analyzer was used in a manner consistent with the brochure provided (model DFA100). Water was added until the volume after diluting was 45 ml. The water used was from tap and added at a temperature of about 37°C to best mimic showering conditions. Samples were agitated with 2 second oscillation for 3 minutes and lather generation was recorded via closed camera imaging. Total volume was measured with light transmission through the sample to record liquid height. The resulting total height was taken at 30 seconds of agitation as an average volume of the two readings for each wash composition at the two inclusion levels.

Total Liquid Height: Table lb

‘Correlates to Lather Volume

“Comparative formula was commercially available Olay® Ultra Moisture Shea Butter, B3 Complex Body Wash, with over 9% by weight petroleum-based petrolatum and over 7% sulfate-based surfactant, sodium trideceth sulfate The data in Table lb unexpectedly shows that compositions made according to the present invention display superior lather volume even when formulated free of sulfate-based surfactants. Samples 3 and 4 provided inferior moisturizing attributes and/or lathering volume characteristics, formulated with zwitterionic surfactant outside the scope of the invention. Samples 5 to 7 contained polyquaternium- 67 as a thickener at over 1 .5% of the total weight of thickener, also resulting in inferior lathering volume and moisturization attribute characteristics.

In addition to the unexpected superior lather volume as confirmed by the data, panelists were asked to wash with the compositions consistent with the present invention and the comparative product over a seven-day period. The panelists concluded that such inventive compositions resulted in their skin having at least the same or significantly better moisturization attributes (i.e. , feeling moisturized and coated in moisture) when compared to the commercially available comparative product that lathered poorly and had over 9% by weight occlusive. Particularly, the panelists concluded that after washing with compositions consistent with the invention, their skin was left feeling hydrated. Overall, the panelists concluded that the compositions made according to the invention left their skin feeling nourished with a lasting moisturization feel while lathering exceptionally well. The panelists also surprisingly concluded that the moisturizing attributes were often significantly better than those sensed after washing with the comparative product, notwithstanding the inclusion of significantly more occlusive in the comparative product. Furthermore, it was unexpectedly discovered that wash compositions made with zwitterionic surfactants not having hydrophobic chains consistent with the claimed invention (Samples 3 and 4), resulted in inferior moisturizing sensory attributes, and that is, not at least at par with the comparative product as concluded by the panelists. The panelists also concluded that when compared to the comparative product, compositions made according to the invention surprisingly created a much more desirable lather volume in hand and a more desirable creamy lather with a pouf. As to Sample 2, a separate panel was conducted and the same conclusion was reached by all panelists in that the moisturizing sensory attributes and lather attributes of Sample 2 were superior in comparison to the moisturizing and lather attributes realized after washing with the comparative formula. As to Samples 1 and 2, the panelists concluded that the formulation lathered significantly better than the comparative product and provided moisturizing attributes better than the comparative product. As to Sample 8, the panelists concluded that the formulation lathered significantly better than the comparative product and provided moisturizing attributes at least as good as the comparative product. EXAMPLE II

The following commercially available products were assessed by trained expert panelists against lamellar wash composition consistent with the claimed invention.

CeraVe® Hydrating Body Wash including cocamidopropyl betaine, white petrolatum sodium cocoyl glycinate, sodium cocoyl glycinate, sodium cocoyl isethionate and sodium methyl cocoyl taurate.

Cetaphil® Moisturizing Relief Body Wash including cocamidopropyl betaine, sodium lauroyl isethionate, hydroxypropyl starch phosphate, sodium chloride, lauric acid, sodium lauroyl glycinate, soybean oil and hydrogenated soybean oil.

Native Coconut and Vanilla Body Wash including cocamidopropyl betaine and sodium lauroyl sarcosinate, sodium cocoyl isethionate.

Olay® Ultra Moisture Shea Butter including petrolatum, sodium trideceth sulfate, sodium chloride, cocamidopropyl betaine, trideceth-3, niacinamide, shea butter and guar hydroxypropyltrimonium chloride.

All panelists washed with the commercially available products under normal washing conditions (via hands and pouf, tap water 37°C) and all unanimously concluded that the lamellar wash compositions consistent with the claimed invention were superior in terms of lather volume and speed to lather.

Claims

Claims:

1 . A lamellar wash composition comprising: a) anionic surfactant comprising from 2 to 6.75 %, and preferably, from 2.2 to 5.5% and most preferably, from 2.5 to 5% by weight of an acyl isethionate based on total weight of the wash composition and from 3 to 8%, and preferably, from 3.2 to 7.75% and most preferably, from 3.25 to 7.5% by weight of an acyl taurate based on total weight of the wash composition; b) from 3 to 7.5%, and preferably, from 3.5 to 7%, and most preferably, from 3.75 to 6.75% by weight zwitterionic surfactant based on total weight of the wash composition; c) from 1.75 to 6%, and preferably, from 1.95 to 5.5%, and most preferably, from 2.25 to 5.5% by weight thickener based on total weight of the wash composition, with the provisos that: i) the weight ratio of acyl isethionate to acyl taurate is from 1 :0.8 to 1 :2.5, and preferably, from 1 :1 to 1 :2.25 or from 1 :1.1 to 1 :2; ii) the lamellar wash composition comprises less than 0.8 wt% of phthalates, dioxanes, parabens, hydantoins and isothiazolinones; iii) total surfactant in the lamellar wash composition does not exceed 22.25% by weight of the wash composition; iv) 2.5 to 35% of the total weight of zwitterionic surfactant comprises C₈ to C-io hydrophobic chain based on total weight of zwitterionic surfactant; v) the lamellar wash composition has a pH from 5.75 to 8.25, and preferably, from 5.9 to 8, and most preferably, from 6 to 7.5; and vi) the lamellar wash composition comprises from 0.0 to 0.75% by weight sulfate- based surfactant, and preservative, fragrance or both; wherein the wash composition further comprises occlusive and less than 8.25% by weight total occlusive based on total weight of the wash composition; wherein the occlusive comprises a first occlusive having a droplet size from 1 to 250 microns, and preferably, from 1 to 100 microns, and most preferably, from 1 to 50 microns and a second occlusive having a droplet size from 25 to 950 nm, and preferably, from 40 to 800 nm, and most preferably, from 50 to 750 nm and further wherein the first and second occlusive are not the same in composition.

2. The lamellar wash composition according to claim 1 , wherein the first occlusive comprises soybean oil and hydrogenated soybean oil and the second occlusive comprises from 55 to 85% by weight of a fully hydrogenated castor oil and 15 to about 45% by weight of Ca-22 branched or straight chain fatty acid.

3. The lamellar wash composition according to claim 2, wherein the second occlusive further comprises 5 to 15% by weight of hydrogenated natural oil in addition to castor oil, the natural oil comprising canola oil, avocado seed oil, pumpkin seed oil, rapeseed oil, coconut oil, com oil, cottonseed oil, olive oil, palm oil, peanut oil, walnut oil, safflower oil, sesame oil, soybean oil, sunflower oil, linseed oil, palm kernel oil, tung oil, jatropha oil, mustard oil, camelina oil, penny cress oil, hemp oil, algal oil, jojoba oil, lard, tallow, poultry fat, yellow grease, fish oil or a mixture thereof.

4. The lamellar wash composition according to any one of the preceding claims, wherein the composition comprises less than 8%, and most preferably, from 2.8 to 8% or from 3 to 7.5% or from 3.5 to 7% or from 4 to 7% or from 4.25 to 6.5% or from 4.5 to 6% or from 4.5 to 5.5% by weight total occlusive.

5. The lamellar wash composition according to any one of the preceding claims, wherein the wash composition comprises 0.9 to 8%, and preferably, from 1.0 to 7.5%, and most preferably, from 1.5 to 6.0% by weight of the first occlusive and from 0.08 to 4.2%, and preferably, from 0.1 to 4%, and more preferably, from 0.1 to 3.35% by weight of the second occlusive based on total weight of the wash composition.

6. The lamellar wash composition according to any one of the preceding claims, wherein the amount of first occlusive in the lamellar wash composition is present at from 2.2 to 30, and preferably, from 7 to 26 and most preferably, from 12 to 25 times more, by weight, of an amount of second occlusive in the lamellar wash composition.

7. The lamellar wash composition according to any one of the preceding claims, wherein no more than 30% of the total weight of ingredients in one occlusive, based on total weight of the occlusive, is the same as the ingredients in the other occlusive used.

8. The lamellar wash composition according to any of the proceeding claims wherein the wash composition further comprises caffeine, mandelic acid, thiamidol or a mixture thereof.

9. The lamellar wash composition according to any of the proceeding claims wherein the wash composition comprises less than 35 ppm 1 ,4-dioxane and less than 3.25%, and preferably, less than 3%, and most preferably, less than 2.5% by weight electrolyte.

10. The lamellar wash composition according to any of the proceeding claims wherein the composition further comprises a peroxisome proliferator-activated receptor ligand.

11 . The lamellar wash composition according to any of the proceeding claims wherein the composition further comprises a C14-16 fatty acid , preferably palmitic acid, glycerol, and 12- hydroxystearic acid, petroselinic acid, conjugated linoleic acid, stearic acid or a mixture thereof.

12. The lamellar wash composition according to claims 2 to 12 wherein the total occlusive does not comprise any occlusive derived from petroleum and the occlusives are not identical.

13. The lamellar wash composition according to any of the proceeding claims wherein the zwitterionic surfactant comprises C₆ to C20, and preferably, from C₆ to Ci₈, and most preferably, from C₈ to Ci₈ hydrophobic chains where from 2.5 to 35%, and preferably, from 3 to 32%, and most preferably, from 3.5% to 30% or from 4 to 28% or from 5 to 20% or from 6 to 18% or from 8 to 15% of the total weight of zwitterionic surfactant is C₈ to C10 hydrophobic chain and the C₈ chain to C10 chain zwitterionic surfactants are present at a weight ratio from 1 :12 to 12:1 or from 1 :7.5 to 7.5:1 or from 1 :5 to 5:1 or from 1 :2.5 to 2.5:1 or from 1 :1.5 to 1.5:1 or from 1 : 1 .25 to 1 .25:1 or from 1 : 1 .15 to 1 .15 to 1 or 1 : 1 and further wherein the zwitterionic surfactants comprise from 38 to 55%, and preferably, from 40 to 50%, and most preferably, from 42 to 48% or from 42 to 46% by weight C12 hydrophobic chain based on total weight of the zwitterionic surfactant.

14. A method for washing a surface comprising the steps of contacting the surface with a wash composition according to any of the proceeding claims, applying shear and water to generate lather and rinsing the surface with water.