JP2012167035A - Creamy skin-cleansing agent - Google Patents

Abstract

[Problem] To provide a creamy skin cleanser which is excellent in foaming and foam quality as a skin cleanser, has a cleansing effect on makeup cosmetics, has a refreshing feeling of use, and has a refreshed feeling after being washed.
A creamy skin cleanser comprising the following components (A) to (C).
(A) Higher fatty acid salt having 8 to 22 carbon atoms (B) Nonionic surfactant having an IOB value of 0.2 or more and less than 0.7 (C) selected from kaolin, mica, talc, crystalline cellulose, calcium carbonate One or more oil-absorbing powders [selection figure] None

Description

The present invention relates to a creamy skin cleanser, and more particularly to a creamy skin cleanser with excellent foaming and foam quality, a cleansing effect for makeup cosmetics, and an excellent feeling after use.

Makeup cosmetics are used for the purpose of producing a beautiful skin color and making skin troubles such as pigmentation inconspicuous by using optical scattering effects such as pigments and pigments. For this reason, wax, water-resistant / oil-resistant oils and the like are used so that optical effects are not impaired by makeup collapse due to sebum or sweat. However, the use of such waxes and fats and oils is a major obstacle when removing these makeup cosmetics, and when removing the makeup cosmetics, wax or oily cleansing cosmetics that contain a large amount of fat components in advance. After washing and removing fats and oils, a face washing method by washing twice in which the remaining components and cleansing cosmetics are washed away with an aqueous facial cleanser has been performed for a long time.

However, in the modern society where time is running out, such a face washing method is not preferred, and a method that can remove makeup by a simpler method is desired. For example, part of the function of an aqueous facial cleanser At the expense of products, products that are easy to use have been developed. The sacrificial functions include foaming and freshness after washing. In general, aqueous facial cleansers are mainly composed of soap, but by incorporating oils and fats, oils and fats have been incorporated by a mechanism that removes wax and oily components adhering to the face by makeup cosmetics. However, since the fats and oils blended in the water-based face wash significantly impairs the surface-active ability of the cleaning component, it has an insufficient function in terms of foaming properties and a refreshing feeling after washing. Therefore, in water-soluble facial cleansers, it has been desired to develop a cleaning technique that can easily remove makeup without sacrificing conventional basic functions and that is excellent in use feeling.

Therefore, as a method for solving these problems, make-up removal (see, for example, Patent Document 1) characterized by containing an aqueous cleaning component and an oil-absorbing powder has been proposed. However, the make-up remover described in Patent Document 1 becomes a hard cream because it contains 10% or more of an oil-absorbing powder such as silicic acid anhydride, and does not spread easily and is difficult to apply to the skin. However, some skins are irritated, resulting in an unfavorable finish, and there are problems such as hurting the skin, feeling irritation and pain during use, and rough skin due to excessive degreasing. A skin cleansing cosmetic comprising hydroxyapatite coated with an N-acylated amino acid salt and one or more clay minerals selected from kaolin, talc, mica, bentonite, montmorillonite, saponite, hectorite (for example, patents) Reference 2) has been proposed. Although the skin cleansing cosmetic described in Patent Document 2 has alleviated irritation to the above skin, the raw material cost is high, and a large amount of clay mineral needs to be blended in order to enhance the makeup removal effect. However, although the skin feels refreshing, the skin is irritated and the finish feel is unfavorable, and these inventions have not reached a satisfactory level.

JP 2001-151638 A JP 2009-62309 A

The present invention has been made in view of the above circumstances, does not impair foaming and foam quality as a skin cleanser, has both a cleansing effect for makeup cosmetics, and does not have a tight skin after washing, and is used refreshingly It is an object of the present invention to provide a creamy skin cleanser having a feeling.

As a result of intensive studies in view of the above situation, the present inventor has obtained a nonionic surfactant having a specific IOB value, a kaolin, a mica, a talc, a crystalline cellulose in a cleaning material mainly composed of a higher fatty acid salt. In combination with one or more oil-absorbing powders selected from calcium carbonate, it has excellent cleansing effect on makeup cosmetics and feel after use without deteriorating foaming and foam quality of higher fatty acid salts. The present inventors have found that a creamy skin cleanser can be obtained and have completed the present invention.

That is, the present invention includes the following components (A) to (C):
(A) Higher fatty acid salt having 8 to 22 carbon atoms (B) Nonionic surfactant having an IOB value of 0.2 or more and less than 0.7 (C) selected from kaolin, mica, talc, crystalline cellulose, calcium carbonate A creamy skin cleanser characterized by containing one or more oil-absorbing powders.

The creamy skin cleansing material of the present invention is excellent in foaming and foam quality as a skin cleaning material, has a cleansing effect on makeup cosmetics, has a refreshed feeling of use because the skin does not become tight after washing.

Hereinafter, the configuration of the present invention will be described in detail. In the component (A) higher fatty acid salt having 8 to 22 carbon atoms used in the creamy skin cleanser of the present invention, a higher fatty acid having 8 to 22 carbon atoms is used, saturated or unsaturated, straight Either a chain or a branched chain may be used. Specifically, lauric acid, myristic acid, palmitic acid, stearic acid, arachidonic acid, behenic acid, isostearic acid, oleic acid, 2-palmitoleic acid, petrothelic acid, oleic acid, elaidic acid, ricinoleic acid, linoleic acid, lino Elaidic acid, linolenic acid, arachidonic acid, and mixed fatty acids such as coconut oil fatty acid, palm kernel oil fatty acid, and beef tallow fatty acid can also be used.

In addition, as a base of a counter ion of these higher fatty acids, inorganic bases such as sodium, potassium and magnesium, ammonium, monoethanolamine, diethanolamine, triethanolamine, 2-amino-2-methylpropanol, 2-amino-2-methyl Examples include alkanolamines such as propanediol, and basic amino acids such as lysine and arginine. Among them, alkali metal salts are particularly preferably used.

These higher fatty acid salts having 8 to 22 carbon atoms may be blended as fatty acid salts, or fatty acids and bases may be blended independently to form fatty acid salts in the formulation system. These higher fatty acid salts may be used alone or in combination of two or more.

The content of the component (A) higher fatty acid salt having 8 to 22 carbon atoms in the creamy skin cleanser of the present invention is preferably 15 to 60% by mass based on the total amount of the creamy skin cleanser, and Preferably it is 20-50 mass%. This is because, within the range of the content, excellent foaming power and cleaning action can be exhibited, and cream-like properties can be formed.

The component (B) nonionic surfactant used in the creamy skin cleanser of the present invention has an IOB value of 0.2 or more and less than 0.7, and is usually liquid or pasty at ordinary temperatures used in cosmetics. If it is a thing, it will not specifically limit, It can use. Here, the IOB value (Inorganic Organic Balance) is based on the organic conceptual diagram of Satoshi Fujita, and is the ratio of the inorganic and organic values. It is an index of the polarity of an organic compound, and the higher this value, the higher the polarity. If the nonionic surfactant has an IOB value of less than 0.2, it is not preferred because it is emulsified by a detergent and the foaming power and foam quality deteriorate, and if the IOB value is 0.7 or more, the skin It is not preferable because the oily component of the makeup cosmetics remaining in the skin cannot be dissolved and the removal effect is poor, and a good cleansing effect cannot be obtained.

Examples of nonionic surfactants having an IOB value of 0.2 to 0.7 for component (B) used in the present invention include triethylhexanoin (IOB value 0.35), tri (capryl / capric acid). ) Glyceryl (IOB value 0.33), glyceryl stearate (IOB value 0.47), glyceryl palmitate (IOB value 0.53), glyceryl isostearate (IOB value 0.63), diglyceryl diisostearate (IOB value) 0.52), diglyceryl diisostearate (IOB value 0.42), dilauric acid PG (IOB value 0.22), glyceryl oleate (IOB value 0.62), stearic acid PG (IOB value 0.38), Lauric acid PG (IOB value 0.53), dilauric acid PEG (2) (IOB value 0.35), dilauric acid PEG ( ) (IOB value 0.54), dilauric acid PEG (6) (IOB value 0.69), diisostearic acid PEG (4) (IOB value 0.40), isostearic acid PEG (3) (IOB value 0.66) Dioleic acid PEG (4) (IOB value 0.40), Dioleic acid PEG (8) (IOB value 0.62), Oleic acid PEG (3) (IOB value 0.65), Distearic acid PEG (2) ( IOB value 0.24), PEG distearate (4) (IOB value 0.39), PEG stearate (2) (IOB value 0.53), glycol dilaurate (IOB value 0.23), glycol stearate ( IOB value 0.40), PEG (10) hardened castor oil (IOB value 0.54), PEG (15) hardened castor oil (IOB value 0.67) PEG (15) hydrogenated castor oil (IOB value 0.47), triisostearic acid PEG (20) hydrogenated castor oil (IOB value 0.57), PEG trioleate (10) glyceryl (IOB value 0.50) ), PEG (10) glyceryl triisostearate (IOB value 0.51), POE (3) stearyl ether (IOB value 0.56), POE (3) oleyl ether (IOB value 0.57), POE (3) Examples include cetyl ether (IOB value 0.61), POE (5) decyl tetradecyl ether (IOB value 0.63), sorbitan (IOB value 0.65), sorbitan sesquiisostearate (IOB value 0.66), and the like. .

Among these, triethylhexanoin, glyceryl tri (capryl / caprate), glyceryl stearate, glyceryl palmitate, glyceryl isostearate, triglyceryl diisostearate, diglyceryl diisostearate, which are nonionic surfactants of fatty acid glyceryl Further, cleansing effect that triethylhexanoin, tri (capryl / capric acid) glyceryl, and glyceryl isostearate exhibit liquid properties at room temperature (25 ° C.) to remove oily components of makeup cosmetics, skin feel after washing From the viewpoint of storage stability of a creamy skin cleanser.

The content of the nonionic surfactant having a component (B) IOB value of 0.2 to less than 0.7 in the creamy skin cleanser of the present invention is preferably 1 on the basis of the total amount of the creamy skin cleanser. It is -20 mass%, More preferably, it is 3-15 mass%. If it is less than 1% by mass, a sufficient cleansing effect may not be obtained, and if it exceeds 20% by mass, the formulation may have poor spreadability, stickiness after washing, and storage stability.

The component (C) oil-absorbing powder used in the creamy skin cleanser of the present invention is a powder used in cosmetics and the like, and refers to a powder having an oil absorption of 10% by weight or more of its own weight. , Mica, talc, crystalline cellulose, or one or more selected from calcium carbonate.

The content of the component (C) oil-absorbing powder in the creamy skin cleanser of the present invention is preferably 0.1 to 10% by mass, more preferably 0.8%, based on the total amount of the creamy skin cleanser. 5 to 5% by mass. If it is less than 0.1% by mass, a sufficient makeup cosmetic removal effect may not be obtained. If it exceeds 10% by mass, it will not spread well when used, remains on the skin after washing, and has storage stability. It may get worse.

The component (D) polyhydric alcohol used in the creamy skin cleanser of the present invention is blended for the purpose of stabilizing the crystalline state of the fatty acid soap, and blended for the purpose of providing dispersion stabilization of the component (B). Is done. Specific examples of polyhydric alcohols include glycerin, ethylene glycol, polyethylene glycol (average molecular weight of 10,000 or less), propylene glycol, polypropylene glycol, isoprene glycol, propanediol, 1,3-butylene glycol, and dipropylene glycol. , Diglycerin, polyglycerin, trehalose, glucosyl trehalose, xylitol, fructose, lactose, trimethylglycine, sorbitol, maltitol and the like. Among these polyhydric alcohols, glycerin, polyethylene glycol (average molecular weight is 10,000 or less), glucosyl trehalose, sorbitol, and maltitol are preferable. These polyhydric alcohols may be used alone or in combination of two or more.

The content of component (D) polyhydric alcohol in the creamy skin cleanser of the present invention is preferably 10 to 50% by weight, more preferably 15 to 40% by weight, based on the total amount of the creamy skin cleanser. . If it is less than 10% by mass, the effect of stabilizing the crystalline state of the fatty acid soap is not sufficiently exerted, and if it exceeds 50% by mass, the solubility of the fatty acid soap is improved and becomes unstable, which is not preferable.

The dosage form of the creamy skin cleanser of the present invention is not particularly limited, but a creamy or pastey form is preferred from the viewpoint of ease of application during use and storage stability of the preparation.

The creamy skin cleanser of the present invention contains, in addition to the essential components described above, optional components that are usually used in skin external preparations such as cosmetics and pharmaceuticals as long as the effects of the present invention are not impaired. Can be used. These components include anionic surfactants, cationic surfactants, nonionic surfactants, oils, higher alcohols, UV absorbers, preservatives, humectants, polymers, pearl brighteners, amino acid derivatives, Examples include sugar derivatives, fragrances, water, alcohol, thickeners, colorants, sequestering agents, antioxidants, drugs, fragrances, and various vitamins.

EXAMPLES Next, although this invention is demonstrated in detail based on an Example, it is not limited to these. Prior to the examples, test methods and evaluation methods employed in each example will be described. In addition, what was shown as% in content of the following prescriptions is mass%.

Foaming, foam quality, feeling after washing (evaluation method)
By 10 expert panelists, 1 to 5 in terms of good foaming, good foam quality (foam creaminess) when using the compositions prepared in Examples and Comparative Examples, and feeling after use (freshness) The sensory evaluation of 5 steps | paragraphs of a point was performed, the average score was calculated | required, and the following references | standards determined.
(Evaluation criteria)
◎: Average score is 4.5 or more 〇: Average score is 3.5 or more and less than 4.5 △: Average score is 2.5 or more and less than 3.5 ×: Average score is 1.5 or more, 2.5 Less than xx: Average score is less than 1.5

Cleansing effect for makeup cosmetics (evaluation method)
Apply the lip color of the formula shown below to the inner side of the upper arm in the range of 3cm x 3cm, leave it for 10 minutes, mix the foamed composition prepared in Examples and Comparative Examples with a small amount of water, and apply. It was thoroughly rubbed and rubbed and rinsed with running water. Using a color difference meter, the brightness before applying the lip color (E ₀ ), the brightness after applying the lip color (E ₁ ), and the brightness after cleaning (E ₂ ) were measured, and the cleaning rate was calculated from the following formula.
Washing rate (%) = 100 × (E ₀ −E ₂ ) / (E ₀ −E ₁ )

(Lip color prescription)
(1) Polyethylene powder 5%
(2) Microcrystalline wax 15%
(3) Carnauba wax 10%
(4) 5% Owl
(5) Solid paraffin 5%
(6) Heavy liquid paraffin 5%
(7) Glyceryl triisostearate 5%
(8) Castor oil 20%
(9) Neopentyl glycol diisooctanoate 20%
(10) 10% pigment

Examples 1-12, Comparative Examples 1-5
The creamy skin cleanser having the formulation shown in Table 1 was prepared and the above tests were performed. The results are also shown in Table 1.

As is clear from Table 1, all of the creamy skin cleansing agents of Examples using the components of the present invention had excellent performance. On the other hand, in the comparative example lacking any of the essential ingredients, one of good foaming, good foam quality (foam creaminess), feeling after use (freshness), cleansing effect on makeup cosmetics It was inferior in the aspect, and the object of the present invention could not be achieved.

Hereinafter, other formulation examples of the creamy skin cleanser of the present invention will be given as examples. In addition, about the creamy skin cleansing agents of these examples, the above-mentioned good foaming, good foam quality (foam creaminess), feeling after use (freshness), cleansing effect on makeup cosmetics When each item was examined, all the examples had excellent characteristics and were good.

Example 13 (Cream skin cleanser)
(1) Myristic acid 28.0%
(2) Stearic acid 5.0%
(3) Potassium hydroxide 6.5%
(4) Triethylhexanoin (IOB value 0.35) 1.0%
(5) Glyceryl stearate (IOB value 0.47) 4.0%
(6) Kaolin 3.0%
(7) Mica 1.0%
(8) Glycerin 20.0%
(9) Castor oil 1.0%
(10) Coconut oil fatty acid N-methylethanolamine 1.0%
(11) Edetate tetrasodium 0.2%
(12) Sodium dihydrogen phosphate 0.5%
(13) N-acetylglucosamine 0.1%
(14) Palm oil fatty acid methyl taurine sodium 5.0%
(15) Dipotassium glycyrrhizinate 0.2%
(16) Glucosyl trehalose 1.0%
(17) Green tea extract 0.5%
(18) Isopropyl methylphenol 0.1%
(19) Fragrance 0.3%
(20) Balance of purified water

(Manufacturing method)
A part of (1), (2), and (20) is heated to 80 ° C., (3) is added, and a neutralization reaction is performed at 90 ° C. for 1 hour. Cooling was started, the remainder of (4), (5), (8) to (14), (20) was added at 70 ° C., and (6), (7), (15) to (19) were added at 50 ° C. ) And disperse with a homomixer. Next, it was cooled to 30 ° C. to prepare a creamy skin cleanser.

Example 14 (Cream skin cleanser)
(1) Myristic acid 30.0%
(2) Palmitic acid 5.0%
(3) Isostearic acid 3.0%
(4) Potassium hydroxide 7.8%
(5) Triglyceryl diisostearate (IOB value 0.52) 3.0%
(6) Diglyceryl diisostearate (IOB value 0.42) 3.0%
(7) Glyceryl palmitate (IOB value 0.53) 3.0%
(8) Talc 1.5%
(9) Calcium carbonate 1.5%
(10) Glycerin 25.0%
(11) Propylene glycol 5.0%
(12) 3.0% olive oil
(13) Palm oil fatty acid diethanolamide 3.0%
(14) Palm oil fatty acid sodium glutamate 3.0%
(15) Sodium monohydrogen phosphate 0.2%
(16) N-acetylglucosamine 0.1%
(17) Edetate disodium 0.2%
(18) Glucosyl trehalose 0.5%
(19) Green tea extract 0.5%
(20) Fragrance 0.3%
(21) Balance of purified water

(Manufacturing method)
A part of (1) to (3) and (21) is heated to 80 ° C., (4) is added, and a neutralization reaction is performed at 90 to 95 ° C. for 1 hour. Cooling was started, and at 80 ° C., (5) to (7), (10) to (14), (2
Add the remainder of 1), add (8), (9), (15) to (20) at 50 ° C., and disperse with a homomixer. Next, it was cooled to 30 ° C. to prepare a creamy skin cleanser.

Claims (3)

A creamy skin cleanser comprising the following components (A) to (C):
(A) Higher fatty acid salt having 8 to 22 carbon atoms (B) Nonionic surfactant having an IOB value of 0.2 or more and less than 0.7 (C) selected from kaolin, mica, talc, crystalline cellulose, calcium carbonate One or more oil-absorbing powders Component (B) Nonionic surfactant having an IOB value of 0.2 or more and less than 0.7 is triethylhexanoin, tri (capryl / capric acid) glyceryl, glyceryl stearate, glyceryl palmitate, glyceryl isostearate, diisostearate The creamy skin cleanser according to claim 1, which is one or more fatty acid ester nonionic surfactants selected from triglyceryl acid and diglyceryl diisostearate. The creamy skin cleanser according to claim 1 or 2, further comprising (D) a polyhydric alcohol.