TW201336521A - Oil-in-water type emulsifying skin cleanser - Google Patents

Abstract

This invention provides an emulsion-like to cream-like oil-in-water type emulsifying skin cleanser, which provides a high cleaning power and a rapid cosmetic affinity, an excellent emulsifying stability, easy rising, and a smooth stretching of hair. The oil-in-water type emulsifying skin cleanser of this invention contains (a) 45 to 70 mass% oil component, (b) 10 to 30 mass% polyoxyethylene mono fatty acid glyceride of HLB 8 to 14, (c) 10 to 45 mass% water, and (d) 0.01 to 1 mass% viscosity builder, and is emulsion-like to cream-like.

Description

Oily emulsified skin cleaning material in water

The present application claims priority to Japanese Patent Application No. 2012-23680, filed on Jan.

The present invention relates to an oily emulsified skin cleansing material in water. More specifically, it relates to a cleansing cosmetic for lotions to creamy makeup removers.

Usually, since the cosmetic cosmetic contains a large amount of oil, the skin cleansing material for the purpose of removing it is formulated with an oil component for dissolving/dispersing the oil component, and/or a surfactant for emulsifying the oil component. Therefore, the higher the blending amount of the oil component and the surfactant, the higher the cleaning power will be, but not only the amount of the preparation, but also the cleaning power and the cleaning speed due to the state of the composition (ie, Fusion of cosmetics).

Generally, when a system containing oil, polyoxyethylene and a nonionic surfactant, and water is considered, when the amount of the oil component and the surfactant is high and the amount of water is small, the reverse microcell with water as the inner phase is formed (reverse Micelle) becomes a one-phase solubilized state (inverse microcell solution phase: L2 phase) or causes phase separation (phase II). When water is added to the reverse microcell solution phase, a lamella liquid crystal is formed to form a liquid crystal one-phase system (L α phase), and when water is further added, liquid crystal and other phases coexist. Two-phase coexistence system (Lc Present phase). Then, if you add to the two-phase coexistence system When water is added, it becomes a one-phase solubilization system (microcell solution phase: L1 phase) or a multiphase system (Multi Phase phase) in which two phases or more coexist.

Among them, the skin cleansing material in the L2 phase state is an oil phase in the continuous phase, so that the fusion with the cosmetics is rapid and the cleaning power is excellent, but on the other hand, it is difficult to remove it by washing, and the skin after washing may become Greasy problem. Further, the skin cleaning material of the L α phase has high viscosity and a feeling of unsmoothness during coating, and the fusion with the cosmetic occurs after the hard liquid crystal structure disintegrates, resulting in a problem of delay in fusion with the cosmetic. Then, the skin cleansing material of the Lc Present phase is known to have no problem in terms of rinsing, but since the fusion with the cosmetic is delayed, the cleaning power is difficult enough, and the frictional feeling derived from the liquid crystal structure is generated.

Unlike the phase formed under such a high blend of oil/surfactant, the L1 phase is not too much due to the small amount of oil and surfactant blending and the small amount of oil remaining as the internal phase (ie, solubilization). We can expect excellent cleaning power and rapid integration with cosmetics.

In this regard, the nature of the phase states contained in the Multi Phase phase is very diverse. For example, in the case of a water-type emulsified phase in oil, the cleaning power is high, but on the other hand, it is not easy to be washed, and the skin after washing becomes oily. Further, in the case of the oil-type emulsified phase in water, the cleaning power is low and the fusion with the cosmetic is slow, but the rinsing is good and the greasy feeling is not felt after washing, and the skin has a preferable property as a skin cleansing material. Either phase imparts a smooth touch characteristic to the emulsified phase, especially in the form of an emulsion to a cream, which is very popular among consumers because of its ease of handling and excellent feeling of use.

In response to such a demand, a lot of emulsion-to-cream oily emulsified skin cleansing materials are prepared (for example, Patent Document 1), and in these products, in order to maintain emulsion stability, the amount of oil and surfactant is reduced ( Special interfacial activity The agent is usually 5% by mass or less. Therefore, there is a problem that the cleaning power is low and the fusion with the cosmetics is sluggish.

Therefore, development of a skin cleansing material which is an emulsion-to-creamy oil-type emulsified phase is desired, and the cleaning power is high and the fusion with the cosmetic is rapid, and the emulsion stability is excellent.

[Previous Technical Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2009-242340

The present invention has been made in view of the above problems of the prior art, and aims to provide an emulsion-to-creamy oil type which has high cleaning power, is rapidly blended with cosmetics, has excellent emulsion stability, is easy to rinse, smooth, and is easily stretchable. Emulsified skin cleansing material (especially cleansing cosmetic for makeup remover).

In order to solve the above problems, the inventors of the present invention conducted an in-depth review and found that by using a polyoxyethylene monoglyceride having an HLB of 8 to 14 as a surfactant, (a) the oil is classified into 45 to 70% by mass, b) a mixed system in which the surfactant is 10 to 30% by mass and (c) water is 10 to 45% by mass. Even if the amount of the oil component and the surfactant oil is extremely large, liquid crystal is not formed and becomes an oily emulsion phase in water. Furthermore, it has been found that the present invention can be completed by blending (d) the tackifier in an amount of 0.01 to 1% by mass in the above-mentioned compounding range, and the easiness of stretching in use is further excellent.

That is, by the present invention, an emulsion is provided in the form of creamy water. The oily emulsified skin cleansing material contains (a) 45 to 70% by mass of oil, (b) 10 to 30% by mass of polyoxyethylene monoglyceride of HLB 8 to 14, and (c) 10 to 45% by mass of water, ( d) The tackifier is 0.01 to 1% by mass.

According to the present invention, an oil-type emulsified skin cleansing material for rinsing type water is provided.

Further, the oil-in-water emulsified skin cleansing material of the present invention can be suitably used for a cleansing cosmetic for makeup remover.

According to the present invention, there is provided an emulsion-to-cream oily emulsified skin cleansing material which has high cleaning power, fast fusion with cosmetics, excellent emulsion stability, easy rinsing, smoothness and easy extension. The oil-in-water emulsified skin cleansing material of the present invention is particularly suitable for use as a cleansing cosmetic for makeup remover.

Hereinafter, the present invention will be described in detail. Further, in the following, POE means polyoxyethylene, PEG means polyethylene glycol, and numerals in the following parentheses indicate respective addition molar numbers.

<(a) component>

As the component (a), any of the usual liquid to semi-solid to solid types such as usual cosmetics and pharmaceuticals can be used. The oil component may, for example, be a fat or oil, a wax, a hydrocarbon oil, a higher fatty acid, a higher alcohol, a synthetic ester oil or a polyoxygenated oil.

In terms of fats and oils, examples include avocado oil, camellia oil, evening primrose oil, turtle oil, macadamia nut oil, corn oil, oyster sauce, olive oil, rapeseed oil, egg butter, sesame oil, peach kernel / almond oil (persic oil), wheat Germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, eucalyptus oil, rice bran oil, Paulownia fortunei Liquid fats such as oil, Japanese paulownia oil, jojoba oil, germ oil, triglycerin, tricaprylin, triisopalmitate; cocoa butter, coconut oil, horse fat, hardened coconut oil, palm Oil, tallow, sheep fat, hardened tallow, palm kernel oil, lard, beef bone fat, wood wax nuclear oil, hardened oil, beef fat, wood wax, hardened castor oil and other solid oils.

In the case of waxes, examples include honey wax, candelilla wax, cotton wax, palm wax, bayberry wax, insect wax, whale wax, montan wax, rice bran wax, lanolin, kapok wax. , lanolin acetate, liquid lanolin, cane wax, lanolin fatty acid isopropyl ester, hexyl laurate, reduced lanolin, jojoba bean wax, hard lanolin, shellac wax, POE lanolin ether, POE Lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin ether, and the like.

As the hydrocarbon oil, for example, liquid paraffin, isodecane, isododecane, isohexadecane, ozokerite, squalene, pristane, paraffin, pure ceresin, squalene, petrolatum can be exemplified. , microcrystalline wax, etc.

For higher fatty acids, examples are lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, 12-hydroxystearic acid, undecylenic acid, terpineic acid, isostearic acid, Linolic acid, linolenic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and the like.

In the case of higher alcohols, linear alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, etc.; monostearyl glycerol are exemplified; Ether (batyl alcohol), 2-mercaptotetradecyl alcohol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyl twelve A branched chain alcohol such as an alcohol.

As the synthetic ester oil, for example, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, and myristic acid are exemplified. Myristyl ester, decyl oleate, hexyl decyl dimethyl octanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, 12- Cholesterol hydroxystearate, ethylene glycol di-2-ethylhexanoate, fatty acid ester of dipentaerythritol, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate , diisostearyl malate, di-2-heptyldecanoic acid glyceride, trimethylolpropane tris-2-ethylhexanoate, trimethylolpropane triisostearate, tetra- Neopentyl glycol 2-ethylhexanoate, glycerol tris-2-ethylhexanoate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethyl palmitate Hexyl hexyl ester, trimyristyl glycerate, tris-2-heptyl undecanoate, castor oil fatty acid methyl ester, oleic acid oil ester, acetamidine glyceride, palmitic acid 2-heptyl undecyl ester, Diisobutyl succinate, N-lauroyl-L-glutamic acid -2-octyldodecanate, di-2-heptyldecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, palmitic acid 2-hexyl decyl ester, 2-hexyl decyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, ethyl acetate, butyl acetate, amyl acetate, triethyl citrate, Crotamiton (C13H17NO) and the like.

In the case of a polyoxygenated oil, a chain polyoxyalkylene such as dimethyl polyoxyalkylene, methylphenyl polyoxyalkylene or methyl hydrogen polyoxyalkylene; decyl polyoxane, a cyclic polyoxyalkylene such as dodecamethyl polyoxane or tetramethyltetrahydropolyoxyalkylene; a polyfluorene oxide resin or a polyoxyxene rubber which forms a three-dimensional mesh structure.

(a) The component is a cleaning component. From the point of view of the cleaning power effect, the above oil can be used arbitrarily, and it is easy to expand further when it is combined with the skin. When it is preferable, it is preferable to use a hydrocarbon oil having a small molecular weight (for example, a liquid paraffin or isododecane), a synthetic ester oil (for example, cetyl octanoate or octyl palmitate), a polyoxyphthalic acid or the like. One or two or more kinds of the components (a) can be used.

The amount of the component (a) to be formulated is 45 to 70% by mass, preferably 50 to 65% by mass, and most preferably 55 to 60% by mass in the skin cleansing material of the present invention. If it is less than 45 mass%, sufficient washing power cannot be obtained. On the other hand, if it exceeds 70 mass%, sufficient emulsion stability cannot be obtained, which is not preferable.

<(b) component>

The component (b) is HLB 8 to 14, preferably a polyoxyethylene monoglyceride of HLB 10 to 13. When the HLB is less than 8, sufficient rinsing property cannot be obtained, and when the HLB is higher than 14, the viewpoint of emulsification stability is not good.

As the (b) polyoxyethylene monoglyceride which can be used in the present invention, for example, PEG-5 glyceryl isostearate (HLB=8), PEG-6 glyceryl isostearate (HLB= 8), stearic acid PEG-5 glyceride (HLB=9), isostearic acid PEG-8 glyceride (HLB=10), isostearic acid PEG-10 glyceride (HLB=10), stearic acid PEG-10 glyceride (HLB=11), isostearic acid PEG-15 glyceride (HLB=12), stearic acid PEG-15 glyceride (HLB=13), isostearic acid PEG-20 glyceride ( HLB = 13), stearic acid PEG-20 glyceride (HLB = 14), coconut oil fatty acid PEG-7 glyceride (HLB = 13) and the like.

Among them, it is particularly suitable to use PEG-8 glyceryl isostearate (=POE(8) glyceryl monoisostearate), PEG-20 glyceryl isostearate (=POE(20) monoisostearic acid Glyceride), PEG-7 coconut oil fatty acid glyceride (=POE (7) coconut oil fatty acid glyceride), as for commercial products, for example, EMALEX GWIS-108 (Japan Emulsion Co., Ltd.), EMALEX GWIS-120 (Japan Emulsion Co., Ltd., Cetiol HE (Cognis Japan Co., Ltd.), and the like.

The blending amount of the component (b) is 10 to 30% by mass, preferably 15 to 25% by mass, and most preferably 15 to 20% by mass in the skin cleansing material of the present invention. When the amount is less than 10% by mass, the effect of easy rinsing cannot be obtained. On the other hand, when it exceeds 30% by mass, it is not preferable from the viewpoint of emulsion stability.

Further, in the skin cleansing material of the present invention, (b) a nonionic surfactant other than the polyoxyethylene monoglyceride of HLB 8 to 14 can be formulated within a range not impairing the effects of the present invention.

<(c) component>

(c) The composition is water. The compounding amount of the component (c) is from 10 to 45% by mass in the skin cleansing material of the present invention.

The oil-in-water emulsified skin cleansing material of the present invention containing the above components (a) to (c) as essential components exhibits a milky to creamy form, and is easy to clean, easy to rinse, smooth in use, and emulsified. Excellent sex. The emulsion to cream system is about 100 to 100,000 mPa. s (30 ° C, B-type viscometer, measured value of 12 rotation / minute) viscosity range (general standard, emulsion: 100 to 10,000 mPa.s, cream: 10,000 to 100,000 mPa.s).

<(d) component>

The oil-in-water emulsified skin cleansing material of the present invention can be suitably formulated with (d) a tackifier in order to improve the ease of stretching during use. In the case of such a tackifier, a particularly preferred polysaccharide-based tackifier may, for example, be a tri-sacral gum, a succinoglycan, agar, carrageenan, gellan gum, guar gum. , locust bean gum, etc. Among them, amber phthalocyanine and santilla gum are preferred. In particular, when amber xylan is used, the emulsion stability and the feeling of the skin after washing (no adhesion/friction and slipiness) can be enhanced.

In the present invention, in addition to the polysaccharide-based tackifier, a tackifier such as a carboxyvinyl polymer or an alkyl-modified carboxyvinyl polymer may be blended. By using these tackifiers together with the polysaccharide-based tackifier, even when the low molecular weight oil of the component (a) is not used, the extended touch feeling when blended with the skin can be effectively obtained.

When the component (d) is blended, it is preferably from 0.01 to 2.5% by mass, more preferably from 0.01 to 1% by mass, most preferably from 0.1 to 0.5% by mass, in the skin cleansing material of the present invention.

<(e) component>

The oil-in-water emulsified skin cleansing material of the present invention can be formulated with a (e) anionic surfactant in addition to the above component (b) from the viewpoint of further improving the emulsion stability. The anionic surfactant may, for example, be an alkyl diol acetate such as lauryl glycol acetate or a POE alkyl sulfonate such as POE sulfosuccinate or a POE alkyl ether such as POE lauryl ether sulfate. N-mercapto-glutamate such as sulfate, cocoyl methyl taurate or N-valeryl-L-glutamate, N-cocoate fat 醯A fatty acid salt such as N-mercaptoglycinate such as sodium glucosamine or sodium laurate.

In the case of the component (e), the skin cleansing material of the present invention is preferably from about 0.01 to 10% by mass, more preferably from 0.05 to 5% by mass, most preferably from 0.1 to 2% by mass.

In the oil-in-water type emulsified skin cleansing material of the present invention, the additive component to be added to the cleaning material can be appropriately formulated, for example, a moisturizing agent, a preservative, a powder, or a coloring agent within a range not impairing the object and effect of the present invention. , spices, pH adjusters, etc.

The oil-in-water type emulsified skin cleansing material of the present invention is preferably a rinse type. The skin cleansing material of the present invention is easily rinsed with water, and a refreshing feeling of use can be obtained. The oil-in-water emulsified skin cleansing material of the present invention is particularly preferably used for a makeup remover for removing makeup cosmetics such as foundation, lipstick, eye makeup (massage, eyeliner, etc.).

(Example)

The present invention will be specifically described below by way of examples, but the present invention is not limited thereto. When the amount of blending is not specifically noted, it is all % by mass.

First, the evaluation items used in the present invention will be described.

(1) trait or phase state

The properties and phase state of the skin cleansing material after the preparation of the preparation were visually evaluated. The skin cleansing material was centrifuged and observed using a polarizing microscope for the presence or absence of the liquid crystal structure. Further, it was confirmed that the generator of the viscous phase having low fluidity due to the liquid crystal structure was judged to be the Lc Present phase, and the producer who did not confirm the viscous phase was judged to be the Multi Phase phase.

(2) cleaning power

In order to evaluate the cleaning power (cleaning effect) of the skin cleansing material of the present invention, the following test was conducted.

On the other hand, in a 2 cm × 12 cm artificial leather coating cosmetic (W/O) liquid foundation (Maquillage Lasting Liquid UV (OC30) (manufactured by Shiseido Co., Ltd.)) 0.05 g, it was sufficiently dried. After taking 0.2 g of the sample (skin cleansing material) in 2 cm × 5 cm cotton, the cotton containing the sample was placed on one side of the square plate. Then, the cotton of the plate was placed on the side of the face so as to be in contact with the previously prepared coating. The artificial leather on the foundation is placed on the surface, and 100 g of the weight is applied from the upper side (the other side) of the plate, and the artificial leather is returned to the artificial leather 10 times, and the reflectance of the foundation dirt remaining on the artificial leather is measured using a color difference meter. (=Reflection of artificial leather after washing rate). The cleaning rate of the sample (skin cleaning material) was determined by the following formula in comparison with the original foundation coating portion.

D(%)=[(RW-RS)/(R0-RS)]×100

D: cleaning rate (%)

R0: Reflectance of artificial leather before application of cosmetic cosmetics (%)

RS: Reflectance of artificial leather after application of cosmetic cosmetics (%)

RW: reflectance of artificial leather after washing (%)

(judgment basis)

◎: The cleaning rate is 90% or more.

○: The cleaning rate is 80% or more and less than 90%.

×: The cleaning rate is less than 80%.

(3) Speed of integration with cosmetics

In order to evaluate the speed at which the skin cleansing material of the present invention is blended with the cosmetic, the speed of the makeup fusion with the makeup remover (when the W/O liquid foundation is used as the cosmetic cosmetic) is judged by eight expert tasters.

(judgment basis)

◎: All of the 8 people answered that the fusion with cosmetics was rapid.

○: 5 to 7 out of 8 people answered that the fusion with cosmetics was rapid.

×: 0 to 4 of 8 people answered that the fusion with cosmetics was rapid.

(4) Emulsification stability

In order to evaluate the stability (period emulsification stability) of the skin cleansing material of the present invention, the appearance after standing at 50 ° C for one month was visually observed, and the stability was evaluated according to the following criteria.

(judgment basis)

◎: No oil slick, separation, and other appearance changes were observed, and the emulsified particle size did not change.

○: No oil slick, separation, or other appearance changes were observed. However, the emulsified particle size showed some changes, but there was no practical problem.

×: Significant appearance changes such as oil slick or oil phase separation and viscosity change occur.

(5) ease of rinsing

In order to evaluate the easiness of rinsing of the skin cleansing material of the present invention, it was judged that the ease of rinsing was performed after washing with water after removing makeup (using a W/O liquid foundation as a cosmetic cosmetic) by eight expert tasters.

(judgment basis)

◎: Everyone of the 8 people answered that it is easy to rinse when washed.

○: 5 to 7 out of 8 people answered that it is easy to rinse when washed after washing.

×: 0 to 4 of 8 people answered that it is easy to rinse when washed after removing makeup.

(6) Slipability during use

In order to evaluate the slipperiness of the skin cleansing material of the present invention, eight panelists were evaluated for the slipperiness at the time of use based on the following criteria.

(judgment basis)

◎: All of the 8 people answered that they were smooth when used.

○: 5 to 7 out of 8 people answered that they were smooth when used.

×: 0 to 4 of 8 people answered that they were smooth when used.

(7) Ease of use during use

In order to evaluate the ease of extension of the use of the skin cleansing material of the present invention, eight panelists were evaluated for ease of use in accordance with the following criteria.

(judgment basis)

◎: Everyone of the 8 people answered that it is easy to extend when used.

○: 5 to 7 out of 8 people are easy to extend when answering the use.

×: 0 to 4 out of 8 people are easy to extend when answering the use.

Furthermore, the following compounds were used in the test examples of this case.

*1: KF-96A-6cs (manufactured by Shin-Etsu Chemical Co., Ltd.)

*2: EMALEX GWIS-108 (made by Japan Emulsion Co., Ltd.)

*3: EMALEX GWIS-120 (made by Japan Emulsion Co., Ltd.)

*4: Cetiol HE (manufactured by Cognis Japan Co., Ltd.)

*5: EMALEX GWIS-160 (made by Japan Emulsion Co., Ltd.)

*6: EMALEX GWIS-220EX (made by Japan Emulsion Co., Ltd.)

*7: EMALEX GWIS-320 (made by Japan Emulsion Co., Ltd.)

*8: Silicon KF-56 (manufactured by Shin-Etsu Chemical Co., Ltd.)

[Test Example 1: Review of the phase state of a mixture of three components consisting of oil-surfactant-water]

The phase states of the three component mixtures were evaluated by mixing the oil content of the following Tables 1 and 2, the surfactant, and the water content.

From Table 1, it is understood that when POE monoisostearic acid glyceride (test examples 1 to 5) or POE (7) coconut oil fatty acid glyceride (test examples 6 to 10) having HLB = 10 to 13 is used as the surfactant, An emulsion-like oil is formed in a mixture of three components containing (a) oil content of 35% by mass to 70% by mass, (b) surfactant of 15 to 25% by mass, and (c) water of 15 to 40% by mass. Type emulsion phase. Further, when a plurality of these surfactants were combined, an oily emulsion phase in an emulsion form was also obtained (Test Examples 11 and 12).

On the other hand, when POE monoisostearic acid glyceride having an HLB of 16 was used as the surfactant, phase separation was immediately caused even when the ratio of the oil component, the surfactant, and the water was within the above range (Test Example 13). Further, when POE diisostearic acid glyceride having an HLB of 10 (Test Examples 14 to 17) and POE triisostearic acid glyceride having an HLB of 8 (Test Examples 18 to 21) were used, liquid crystal was formed to form LcPresent phase (Table 2).

From these results, it can be seen that by selecting a POE fatty acid glyceride having an HLB of 8 to 14, and a monoester of a fatty acid and glycerin, that is, a POE monoglyceride (HLB=8 to 14) is selected as a surfactant. Even if it contains oil 35 to 70% by mass, a surfactant of 10 to 30% by mass, and a mixture of residual water still become an oily emulsion phase in water.

[Test Example 2: Performance evaluation of skin cleaning materials]

Then, the blending amount of (a) to (c) was prepared within the above range, and (d) the oily emulsified composition of the tackifier was formulated to evaluate the performance as a skin cleansing material.

As shown in Table 3, the liquid paraffin containing (a) oil was 50% by mass of cetyl octanoate, and the POE (8) monoisostearic acid glyceride (HLB = 10) (15% by mass) (d) a ketone ethylene polymer of 0.1% by mass of a tackifier, a residue of (c) water and an aqueous component (Example 1), forming an emulsion-like oily emulsified phase in water, and makeup The product has excellent fusion, cleaning power, emulsion stability, rinsing properties, smoothness during use and ease of extension. Then, it is confirmed that a part of the oil component (a) (= cetyl octanoate) is replaced with a cleaning material of isododecane, dimethyl polyoxyalkylene or methyl phenyl polyoxyalkylene in the cleaning material. (Examples 2 and 3), the cleaning power is further improved.

From the viewpoint of (b), it is understood that the composition containing (a) 50 to 55 mass% of the oil component and (d) 0.1 mass% of the carboxyvinyl polymer contains POE monoisostearate having an HLB of 10 to 13 and POE (7) coconut oil fatty acid glyceride total 15% by mass (Examples 1 to 3), 20% by mass (Example 4), and 25% by mass (Example 5) as a cleaning material of (b) to form stable water The oil-type emulsified phase is excellent in blending and stretching with cosmetics, and is excellent in cleaning power, rinsing property, and slipperiness during use. In particular, from the results of Examples 4 and 5, when the blending amount of (b) is increased, the rinsing property tends to be improved.

On the other hand, when POE monostearate having an HLB of 16 was used as (b), it was separated immediately after mixing, and the performance could not be evaluated (Comparative Example 1).

The (d) blending of 0.1 to 0.15% by mass of a carboxyvinyl polymer, a triterpene gum, amber uranyl, or a combination of the cleaning materials is excellent in ease of use when used (Examples 1 to 9) . In particular, when amber turmeric was formulated, the emulsion stability and the slipperiness at the time of use showed a further improvement (comparison of Example 2 with Examples 8 and 9).

From the above results, it is understood that an oil-based emulsified skin cleansing material which has a high cleaning power and which is rapidly blended with a cosmetic, has excellent emulsification stability, rinsing property, and smoothness, and which is easy to stretch, is contained as long as it is contained. (a) 45 to 70% by mass of the oil, (b) 10 to 30 parts by mass of the polyoxyethylene monoglyceride having an HLB of 8 to 14, (d) 0.01 to 1% by mass of the tackifier, and (c) 10 to 10% of the water. 45% by mass The components can be.

[Test Example 3: (e) Effect of an anionic surfactant]

Furthermore, the effect of (e) an anionic surfactant in the skin cleansing material of the present invention was reviewed. Skin cleansing materials as described in Table 4 below were prepared and evaluated for performance.

It is understood that when the (e) anionic surfactant (sodium cocoylmethyltaurate) is added in an amount of 0.1 to 1% by mass in the components (a) to (d) of the present invention, the emulsion stability is further improved (implementation) Examples 1 and 10, and Examples 6 and 11, 12). However, for the cleaning material using POE (60) monoisostearic acid glyceride (HLB = 16) as a surfactant, phase separation could not be suppressed even if the component (e) was formulated (Comparative Example 2).

This shows that by containing (a) 45 to 70% by mass of the oil, (b) 10 to 30 masses of the polyoxyethylene monoglyceride having an HLB of 8 to 14, (d) 0.01 to 1% by mass of the tackifier, and (c) 10 to 45% by mass of the water-based emulsified skin cleansing agent of the present invention, wherein the (e) anionic surfactant is compounded to obtain a skin cleansing material which is further improved in emulsion stability.

Hereinafter, the examples of the skin cleansing material of the present invention are shown, but the present invention is not limited to these. The above-mentioned prescription skin cleansing material was prepared in accordance with a general method, and the aforementioned performance evaluation was performed. Any of the skin cleansing materials are emulsion-to-cream oily emulsified phases, which have high cleaning power, rapid fusion with cosmetics, excellent emulsion stability, rinsing properties, smoothness, and ease of extension.

Formulation Example 1 (cleaning lotion, emulsion form)

Prescription Example 2 (cleaning lotion, emulsion form)

Prescription Example 3 (cleansing lotion, creamy form)

Prescription Example 4 (cleansing lotion, creamy form)

Prescription Example 5 (cleaning lotion, emulsion form)

Prescription Example 6 (cleaning lotion, emulsion form)

Formulation Example 7 (cleaning lotion, emulsion form)

Claims (3)

An oil-based emulsified skin cleansing material comprising: (a) 45 to 70% by mass of oil, (b) 10 to 30% by mass of polyoxyethylene monoglyceride of HLB 8 to 14, and (c) 10 to 45 mass of water %, and (d) the tackifier is 0.01 to 1% by mass, and the cleaning material is emulsion-like to cream. For example, the oil-in-water emulsified skin cleansing material described in claim 1 is a rinse-off type. The oil-in-water emulsified skin cleansing material described in the first or second aspect of the patent application is used as a cleansing cosmetic for makeup remover.