WO2009122844A1

WO2009122844A1 - Cosmetic preparation

Info

Publication number: WO2009122844A1
Application number: PCT/JP2009/054013
Authority: WO
Inventors: 稔細川
Original assignee: ライオン株式会社
Priority date: 2008-04-04
Filing date: 2009-03-04
Publication date: 2009-10-08
Also published as: KR20100133461A; KR101659635B1; JP5509533B2; CN102046144A; MY159473A; JP2009249330A

Abstract

Disclosed is a cosmetic preparation characterized by containing (A) an amphoteric surfactant or an anionic surfactant, and (B) an acrylic polymer which contains, as constitutional units, 70-95% by mole of a monomer unit represented by general formula (1) and 5-30% by mole of a monomer unit represented by general formula (2). The cosmetic preparation is also characterized in that the mass ratio (A)/(B) is within the range of 0.1-50.0. (In the formulae, R¹ represents a hydrogen atom or a methyl group; R² represents a hydrogen atom or a -CH₂OH group; A represents an oxygen atom or an -NH- group; R³ represents a hydrogen atom or a methyl group; and M represents a hydrogen atom, an alkali metal atom, an ammonium or an amine.)

Description

Cosmetics

The present invention relates to a cosmetic having excellent foam quality.

In cosmetics, shampoos, facial cleansers, body soaps, and other types of rinse-off cosmetics have a rich foam quality that is fine, shape-retaining and difficult to defoam when applied to the hair and skin. On the other hand, cosmetics that do not rinse away, such as hair foam agents, are finely shaped when they are discharged from a container, have shape retention, and quickly defoam when applied to hair etc. A suitable good foam quality is required.

Furthermore, in hair cosmetics, since hair that has been dyed is faded by shampooing, there is a need for a hair cosmetic that suppresses discoloration and maintains the hair color after dyeing. On the other hand, hair cosmetics using special surfactants have been proposed (see Patent Document 1: Japanese Patent Laid-Open No. 7-233303, Patent Document 2: Japanese Patent Laid-Open No. 2002-275038). However, there are problems that the anti-fading effect is insufficient and the foam quality is lowered. From the above, there has been a demand for a hair cosmetic composition that has an excellent anti-fading effect and good foam quality.

Also, in skin cosmetics, elbows, arms, shins, etc. may become white (whitening) in a dry environment such as in winter due to elution of the stratum corneum in the skin after washing. From the above, a skin cosmetic that prevents such whitening of the skin and has a good foam quality has been desired.

JP 7-233303 A JP 2002-275038 A JP 2007-161986 JP 7-315463 A

The present invention has been made in view of the above circumstances, and an object thereof is to provide a cosmetic with excellent foam quality. Furthermore, it aims at providing the thing which is excellent in the anti-fading effect of hair in the case of hair cosmetics, and is excellent in the anti-whitening effect of skin in the case of skin cosmetics.

As a result of intensive studies to achieve the above object, the present inventors have used (A) an amphoteric surfactant or an anionic surfactant in combination with a specific (B) acrylic acid polymer, and (A) / ( When the mass ratio represented by B) is from 0.1 to 50.0, the foam quality is improved. Further, in the case of hair cosmetics, it has an excellent anti-fading effect on hair, and in the case of skin cosmetics, the skin It has been found that the effect of preventing whitening is excellent, and has led to the present invention.

Therefore, the present invention provides [1]. (A) an amphoteric surfactant or an anionic surfactant, and (B) 70 to 95 mol% of a monomer unit represented by the following general formula (1) and a monomer represented by the following general formula (2) A cosmetic comprising an acrylic acid-based polymer containing 5 to 30 mol% of a unit as a constituent unit and having a mass ratio represented by (A) / (B) of 0.1 to 50.0 Fee,

(Wherein R ¹ represents a hydrogen atom or a methyl group, R ² represents a hydrogen atom or a —CH ₂ OH group, and A represents an oxygen atom or —NH—).

(In the formula, R ³ represents a hydrogen atom or a methyl group, and M represents a hydrogen atom, an alkali metal atom, ammonium or an amine.)
[2]. The cosmetic according to [1], wherein the component (A) is a surfactant selected from carboxybetaine type amphoteric surfactants, sulfate ester type anionic surfactants and N-acyl amino acid type anionic surfactants. To do.

According to the present invention, it is possible to improve the foam quality of a cosmetic, and further provide a hair cosmetic excellent in the effect of preventing discoloration of the hair and a skin cosmetic excellent in the effect of preventing whitening of the skin.

The cosmetic of the present invention comprises (A) an amphoteric surfactant or an anionic surfactant, and (B) 70 to 95 mol% of a monomer unit represented by the general formula (1), and the general formula (2) Cosmetics containing an acrylic acid polymer containing 5 to 30 mol% of the represented monomer unit as a constituent unit, and having a mass ratio represented by (A) / (B) of 0.1 to 50.0 It is a fee.

(A) Amphoteric surfactant or anionic surfactant Examples of amphoteric surfactants include carboxybetaine-type amphoteric surfactants such as coconut oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, lauryl dimethylaminoacetic acid betaine, and lauryl hydroxy. Sulfobetaine type such as sulfobetaine, aminocarboxylic acid type such as laurylaminopropionic acid, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, N-coconut oil fatty acid acyl-N-carboxyethyl-N -Imidazolinium betaine type such as hydroxyethylethylenediamine salt, lecithin and the like. These can be used individually by 1 type or in combination of 2 or more types.

Examples of the anionic surfactant include sulfate ester type anionic surfactants such as alkyl (preferably 10 to 16 carbon atoms) sulfate, polyoxyethylene alkyl (preferably 10 to 16 carbon atoms) ether sulfate, Sulphonic acid type such as α-olefin sulfonate, N-acyl-N-methyltaurine salt, alkyl sulfosuccinate, N-acyl-N-methylglycine salt, N-acyl-N-methyl-β-alanine salt ( N-acyl (preferably having 10 to 18 carbon atoms) amino acid type such as N-lauroyl-N-methyl-β-alanine salt), N-acyl glutamate (N-coconut oil fatty acid acyl-L-glutamate, etc.) Examples thereof include phosphoric acid ester types such as anionic surfactants, alkyl phosphates, and polyoxyethylene alkyl ether phosphates.

Examples of the counter ion used for these surfactant salts include alkali metal salts such as sodium salt and potassium salt, and amine salts such as ammonium salt, triethanolamine salt and aminomethylpropanol salt.

The component (A) is preferably a surfactant selected from carboxybetaine type amphoteric surfactants, sulfate ester type anionic surfactants and N-acyl amino acid type anionic surfactants.

The amount of the component (A) is not particularly limited, but is usually 0.01% by mass or more, preferably 0.1 to 50% by mass, more preferably 0.2 to 25% by mass in the cosmetic. preferable. If the blending amount is less than 0.01% by mass, the intended effect may not be obtained. In the case of a rinsing-type hair cosmetic, 5 to 20% by mass is more preferable, in the case of a rinsing-free type hair cosmetic, 0.2 to 1% by mass is more preferable, and in the case of a skin cosmetic. 0.2 to 10% by mass is more preferable.

(B) Acrylic acid-based polymer 70 to 95 mol% of the monomer unit represented by the general formula (1) and 5 to 30 mol% of the monomer unit represented by the general formula (2) are included as structural units. It is an acrylic acid polymer made of a copolymer, and can be used alone or in combination of two or more.

(In the formula, R ³ represents a hydrogen atom or a methyl group, and M represents a hydrogen atom, an alkali metal atom, ammonium or an amine.)

Examples of the alkali metal atom include sodium atom, potassium atom, and amine include monoethanolamine, diethanolamine, triethanolamine and the like. When M is an alkali metal atom, ammonium or amine, -COOM forms a salt. To do.

Examples of the monomer corresponding to the monomer unit represented by the general formula (1) include 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylamide, 2-hydroxyethyl methacrylamide, 2, Examples include 3-dihydroxypropyl acrylate and 2,3-dihydroxypropyl methacrylate. Examples of the monomer corresponding to the monomer unit represented by the general formula (2) include acrylic acid, methacrylic acid, and salts thereof.

The ratio of the monomer unit represented by the general formula (1) is 70 to 95 mol% in the acrylic polymer (100 mol% of all monomer units), preferably 75 to 85 mol%. The ratio of the monomer unit represented by (2) is 5 to 30 mol% in the acrylic acid polymer (in 100 mol% of all monomer units), and preferably 10 to 20 mol%. When the proportion of the monomer unit represented by the general formula (1) is less than 70 mol% and the proportion of the monomer unit represented by the general formula (2) exceeds 30 mol%, the desired effect cannot be obtained, When the proportion of the monomer unit represented by the general formula (1) exceeds 95 mol% and the proportion of the monomer unit represented by the general formula (2) is less than 5 mol%, the foam quality improving effect is obtained. Absent.

In addition, the acrylic acid polymer of the present invention may contain a monomer unit other than the monomer unit represented by the general formula (1) or (2) unless the effects of the present invention are impaired. it can. Examples of other monomer units include monomer units corresponding to nonionic monomers, amphoteric monomers, semipolar monomers, cationic monomers, and polysiloxane group-containing monomers. It is done. However, these monomers do not include monomers corresponding to the monomer units represented by the above (1) or (2). The proportion of monomer units other than the monomer unit represented by the general formula (1) or (2) is preferably 0 to 15 mol% in the acrylic acid polymer. The acrylic acid polymer of the present invention may be a random copolymer or a block copolymer, and the acrylic acid polymer of the present invention comprises monomer units represented by the general formulas (1) and (2). An acrylic acid polymer composed of a copolymer as a unit is preferred.

Examples of nonionic monomers include esters of alcohols having 1 to 22 carbon atoms and (meth) acrylic acid, amides of alkylamines having 1 to 22 carbon atoms and (meth) acrylic acid, ethylene glycol, 1 1,3-propylene glycol and the like (meth) acrylic acid monoesters, esters obtained by etherifying the hydroxyl groups of these monoesters with methanol, ethanol, etc., (meth) acryloylmorpholine, etc. Examples of the body include betaine group-containing (meth) acrylic esters, betaine group-containing (meth) acrylamides, etc., and examples of semipolar monomers include amine oxide group-containing (meth) acrylic esters and amine oxide groups (Meth) acrylamide and the like. Examples of the cationic monomer include a quaternary amine. Sulfonium group-containing (meth) acrylic esters, quaternary ammonium group-containing (meth) acrylamide and the like.

The polysiloxane group-containing monomer is a compound having a polysiloxane structure and a structure capable of being covalently linked to an acrylic acid polymer. Such a structural unit has a high affinity with the silicone oil usually used together in the cosmetic composition, and serves to bind the silicone oil with other structural units in the acrylic acid-based polymer. In particular, it is considered that there is a function to increase the adsorption power of silicone oil to damaged hair and the like.

In addition, the ratio of each monomer unit in the acrylic acid polymer is the carbonyl group, amide bond, IR absorption of polysiloxane structure and various functional groups, and the methyl group or amide bond site of polydimethylsiloxane and adjacent to them. It can be measured by ¹ H-NMR of a methyl group, methylene group or the like, or ¹³ C-NMR thereof.

The weight average molecular weight of the acrylic acid polymer is usually 3,000 to 100,000. If it is less than 3,000, the foam quality-improving effect may be weakened, and if it exceeds 100,000, the hair and skin may be irritated. The weight average molecular weight is preferably 10,000 to 30,000, more preferably 10,000 to 20,000, and more preferably 12,000 to 17,000 from the viewpoint of further improving the feel of hair and skin after drying. Further preferred.

The weight average molecular weight of the acrylic acid polymer can be measured by gel permeation chromatography. Specifically, the apparatus: manufactured by Tosoh Corporation, SC8010, SD8022, RI8020, CO8011, PS8010, column: Wako Pure Chemical Industries, Ltd. Using Wakopak Co., Ltd. (Wakobeads G-50), developing solvent: water / methanol / acetic acid / sodium acetate = 6/4 / 0.3 / 0.41), polyethylene glycol can be obtained as a standard substance.

The molecular weight of the acrylic acid polymer can be adjusted, for example, by controlling the degree of polymerization of the polymer. The molecular weight and viscosity can also be controlled by increasing or decreasing the addition amount of a crosslinking agent such as a polyfunctional acrylate. However, if a crosslinking agent is added as much as possible, the molecular weight and the viscosity are rapidly increased, and thus there are aspects that are difficult to control in industrial production. For this reason, it is preferable not to contain a crosslinking agent.

The acrylic acid-based polymer of the present invention can be obtained according to the method described in Japanese Patent Application Laid-Open No. 2007-161986. For example, after mixing monomers giving their respective structural units or their precursors and copolymerizing them by methods such as solution polymerization, suspension polymerization, emulsion polymerization, etc., addition of polysiloxane structure, condensation reaction as necessary It can manufacture by performing etc. In addition, the counter ion of the anionic monomer represented by the general formula (2) may be subjected to polymerization by substituting part or all of the anionic monomer other than hydrogen ion by a neutralization reaction before polymerization. Alternatively, after the other reaction, a part or all of the reaction may be replaced with a substance other than hydrogen ion by a neutralization reaction. These can be appropriately selected depending on the ease of synthesis. In addition, each monomer is mix | blended so that each monomer may become a specific molar ratio with respect to the total amount (100 mol%) of all the monomers. The proportion of the structural unit composed of each monomer in the copolymer of the present invention is the same as the blending amount of each monomer at the time of copolymerization.

The polymerization reaction is preferably performed in a hydrophilic solvent. Examples of hydrophilic solvents include ketone solvents such as acetone, methyl ethyl ketone, and methyl isobutyl ketone, alcohol solvents such as methanol, ethanol, n-propanol, i-propanol, n-butanol, i-butanol, and sec-butanol, water, and the like Is mentioned. These may be used alone or in combination of two or more. Among these, it is preferable to use an alcohol solvent.

As polymerization initiators, 2,2′-azobisisobutyronitrile, 2,2′-azobis (2,4-dimethylvaleronitrile), 2,2′-azobis (4-methoxy-2,4-dimethyl) Valeronitrile), dimethyl-2,2′-azobisisobutyrate, 2,2′-azobis (2-methylbutyronitrile), 1,1′-azobis (1-cyclohexanecarbonitrile), 2,2 ′ -Azobis (2-methyl-N- (2-hydroxyethyl) -propionamide), 2,2'-azobis (2-amidinopropane) dihydrochloride, dimethyl 2,2'-azobis (2-methylpropionate) ), Etc., peroxides such as benzoyl peroxide, dicumyl peroxide, di-t-butyl peroxide, lauroyl peroxide, persulfates, or redo thereof Hex system or the like, can be used without particular limitation. The polymerization initiator is preferably used in the range of 0.01 to 5% by mass relative to the total monomers.

The polymerization reaction can be performed, for example, in an inert gas atmosphere such as nitrogen or argon, preferably at 30 to 120 ° C., more preferably at 40 to 100 ° C., usually for 1 to 30 hours. After completion of the polymerization, the produced copolymer may be isolated from the reaction solution by an appropriate means such as solvent distillation or addition of a poor solvent. This copolymer can be used as it is or after further purification, for example, in the production of cosmetics. Purification can be carried out by combining appropriate means such as reprecipitation, solvent washing, membrane separation and the like as necessary.

The amount of component (B) is not particularly limited, but is usually 0.01% by mass or more, preferably 0.1 to 10% by mass, more preferably 0.2 to 5% by mass in the cosmetic. preferable. If the blending amount is less than 0.01% by mass, the intended effect may not be obtained.

In the present invention, the mass ratio of the component (A) and the component (B) represented by (A) / (B) may be in the range of 0.1 to 50.0 in order to obtain the desired effect. Necessary, 0.1 to 35.0 is preferable. When (A) / (B) is less than 0.1, preferable foam quality cannot be obtained, and when it exceeds 50.0, the foam quality improvement effect cannot be sufficiently obtained, and the effect of preventing hair from fading and the suppression of whitening of the skin The effect cannot be obtained. In the case of a type of hair cosmetic to be washed away, 1.0 to 35.0 is more preferred, in the case of a type of hair cosmetic that is not washed away, 0.1 to 1.0 is more preferred, and in the case of skin cosmetics, 5 to 5. 0.0 to 35.0 is more preferable.

The cosmetic of the present invention includes, in addition to the above components, a cationic surfactant, a nonionic surfactant, a semipolar surfactant, and a component (B) as long as the effects of the present invention are not impaired depending on the purpose. Other polymer compounds, polyhydric alcohols, higher alcohols, silicones, lower alcohols, long chain fatty acids, ester oils, thickeners, fragrances, ultraviolet absorbers, fine particle powders, plant extracts, proteins and their derivatives, amino acids, Preservatives, colorants, pH adjusters, antioxidants, chelating agents, purified water and the like can be blended.

When blending a fragrance in the cosmetic of the present invention, the fragrance used is the same as the fragrance and fragrance composition described in JP-A-2003-95895. When blending a fragrance composition, the fragrance composition is included in the cosmetic. It is preferable that the amount of the compound is 0.00001 to 50% by mass, and more preferably 0.0001 to 30% by mass.

Examples of cosmetics include hair or skin cosmetics, and examples of washing-off hair cosmetics include shampoos, rinse-in shampoos, pre-shampoos and other hair cleaning agents, washing-out treatments, rinses, conditioners, and the like. Examples of hair cosmetics that do not wash away include treatments that do not wash away, and styling agents. As such a cosmetic, it can be used as a foam agent that is filled in a former container and discharged in a foam form. Examples of the former container include a non-gas type foam discharge container and an aerosol container using a propellant and a pressure-resistant container, and a non-gas type foam discharge container is preferable. The non-gas type foam discharge container is not particularly limited as long as the cosmetic can be mixed with air and discharged in a foamed state. For example, a squeeze foamer that can discharge bubbles by squeezing the bottle body by hand. Examples thereof include a pump former container that can discharge bubbles by pushing down the container and the nozzle part, and can be appropriately selected according to the purpose. Examples of skin cosmetics include body soaps and facial cleansers.

The cosmetic of the present invention can be prepared based on a conventional method, and can be obtained, for example, by mixing the above component (A), component (B), optional component and water (remainder). The obtained cosmetic can be appropriately filled in a container.

The pH of the hair cosmetic of the present invention is preferably 3 to 7, and the pH of the skin cosmetic is preferably 4 to 11. Preferred pH adjusters include inorganic acid salts such as sodium hydroxide and sodium pyrophosphate, and organic acids such as glycolic acid and citric acid. In the present invention, pH is measured at 25 ° C. using a HM-25R pH meter manufactured by Toa Denpa Kogyo.

The cosmetic of the present invention is particularly suitable for hair that has been dyed because it has an effect of preventing discoloration of hair that has been dyed.

Hereinafter, although an Example and a comparative example are shown and this invention is demonstrated concretely, this invention is not restrict | limited to the following Example. In the following examples, unless otherwise specified, “%” of the composition represents “% by mass”, the ratio represents the mass ratio, and the amount of each component in the table is the amount converted into the pure amount unless otherwise specified. .

[Preparation example of polymer (1)]
A reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen gas inlet tube and a stirring device was charged with 100 parts by mass of ethanol, and 96.8 parts by mass of 2-hydroxyethylacrylamide and 3.2 parts of acrylic acid were added to the dropping funnel. And a monomer mixed solution consisting of 80 parts by mass of ethanol was charged, and the reactor was purged with nitrogen, and then heated to 80 ° C. Into the reactor, 1 part by weight of dimethyl 2,2′-azobis (2-methylpropionate) (V-601; manufactured by Wako Pure Chemical Industries, Ltd.) was added, and the monomer mixture was added over 2 hours. It was dripped. After the completion of the dropwise addition, the mixture was reacted for 6 hours and then cooled to obtain a polymer (1).

[Preparation examples of polymers (2) to (7)]
Polymers (2) to (7) were prepared in the same manner as the preparation method of polymer (1) except that the monomer and the blending amount thereof were adjusted so that the structural units shown in Table 1 were obtained. Weight average molecular weight is as follows: apparatus: manufactured by Tosoh Corporation, SC8010, SD8022, RI8020, CO8011, PS8010, column: Wako Pure Chemical Industries, Ltd. Wakopak (Wakobeads G-50), developing solvent: water / methanol / acetic acid / sodium acetate = 6/4 / 0.3 / 0.41), and polyethylene glycol was determined as a standard substance.

HEAA: 2-hydroxyethylacrylamide GLM: 2,3-dihydroxypropyl methacrylate AA: acrylic acid MA: methacrylic acid

[Examples 1 to 15, Comparative Examples 1 to 9]
According to the composition shown in Tables 2 to 4, hair cleansing agents were prepared according to a conventional method. Each hair cleaning agent was evaluated as follows. The results are also shown in Tables 2-4. The pH was adjusted at 25 ° C. using a HM-25R type pH meter manufactured by Toa Denpa Kogyo.

<Anti-fading effect>
A black hair bundle having a length of 10 cm and a mass of 1 g was immersed in a model bleach solution having a composition 1 of 10 times mass at room temperature for 30 minutes. Thereafter, it was thoroughly washed with warm water and dried. Further, a commercial hair dye (Beauty Lab Hair Color (Stylish Brown); manufactured by Hoyu Co., Ltd.) was applied in the same amount as the mass of the hair bundle, wrapped in a wrap, and treated at room temperature for 30 minutes. Next, 10% POE (2) sodium lauryl ether sulfate of 1/10 mass of the hair bundle mass was applied, combed for 1 minute, rinsed with warm water for 1 minute, and dried to obtain an evaluation hair bundle. The color tone of the hair bundle was measured with a color difference meter SE2000 manufactured by Nippon Denshoku Industries Co., Ltd. and used as an initial value.
The evaluation hair bundle was wetted with water, 0.1 g of the sample hair cleaning agent was applied thereto, and the hair was combed for 1 minute to quickly adjust the whole hair bundle. Thereafter, it was rinsed with warm water for 1 minute and dried. After repeating this treatment 30 times, the color tone of the hair bundle was measured again with a color difference meter, and the color difference (ΔE *) from the initial value was determined. Note that this value and the visual impression have the following relationship.
ΔE * is 0 or more and less than 1.6: little change in color ΔE * is 1.6 or more and less than 2.5: slight color change ΔE * is 2.5 or more: color change (composition) 1) Model bleach solution Hydrogen peroxide 6%
Ammonia 2%
Sodium hydroxide adjusted to pH 10.5
Purified water balance
Total 100%

<Foam quality evaluation>
The sample hair cleanser was diluted 10 mass times with purified water (corresponding to the dilution factor at the time of shampooing), and a non-aerosol foamer pump (foam releasing pump container of FIG. 1 described in Japanese Patent Laid-Open No. 7-315463) ), And the foam was picked up, and the “feel” and “hardness of the foam” of the foam were subjected to sensory evaluation based on the following evaluation criteria. A result is shown by the average value of evaluation of five evaluators.
[Evaluation criteria]
5 points: Good foam quality 4 points: Somewhat good foam quality 3 points: Somewhat bad foam quality 2 points: Bad foam quality 1 point: No foam

[Examples 16 to 26]
According to the compositions shown in Tables 5 and 6, shampoo compositions were prepared by the following preparation methods. About each shampoo composition, the anti-fading effect was implemented similarly to Example 1, and foam quality evaluation was implemented by the following evaluation. The results are also shown in Tables 5 and 6.
Table 5: Each component was stirred and mixed, and finally pH adjustment was performed using glycolic acid or citric acid to prepare a shampoo composition.
Table 6: With the component (a) heated to 80 ° C. and well stirred, purified water that was also heated to 80 ° C. was gradually added with stirring. The amount of purified water added at this time was 25% of the total amount of the composition. The mixed solution was cooled to 50 ° C. with stirring. Separately, the remaining components were mixed, and both solutions were mixed with stirring to prepare a shampoo composition.

<Foam quality evaluation>
Using a shampoo composition (the amount is appropriately selected according to the amount of hair), normal hair washing was performed, and the “feel” and “hardness of foam” of the foam were subjected to sensory evaluation based on the following evaluation criteria. A result is shown by the average value of evaluation of five evaluators.
[Evaluation criteria]
5 points: Good foam quality 4 points: Somewhat good foam quality 3 points: Somewhat bad foam quality 2 points: Bad foam quality 1 point: No foam

[Examples 27 to 29, Comparative Examples 10 to 12]
In accordance with the composition shown in Table 7, a treatment foam was prepared according to a conventional method and filled into a non-aerosol foamer pump (foam discharge pump container of FIG. 1 described in JP-A-7-315463). Each treatment foam was evaluated as follows. The results are also shown in Table 7.

<Anti-fading effect>
Preparation of the evaluation hair bundle and measurement of the initial value were carried out in the same manner as in Example 1. 0.5 g of the sample treatment foam was applied to the evaluation hair bundle, passed through for 1 minute to quickly adjust the whole hair bundle, and then dried with a drier. Two hours after drying, the hair bundle was wetted with warm water, 0.1 g of 10% POE (2) sodium lauryl ether sulfate was applied, passed through for 1 minute, rinsed with warm water for 1 minute, and dried. This sample treatment foam application → drying → cleaning treatment was repeated 30 times, and then the color tone of the hair bundle was again measured with a color difference meter to obtain the color difference (ΔE *) from the initial value. Note that this value and the visual impression have the following relationship.
ΔE * is 0 or more and less than 1.6: little change in color ΔE * is 1.6 or more and less than 2.5: slight color change ΔE * is 2.5 or more: color change
<Foam quality evaluation>
From the non-aerosol foamer pump, 3 g of the treatment foam was discharged in the form of foam, and the sensory evaluation was performed on the “feel” and “hardness of the foam” based on the following evaluation criteria. A result is shown by the average value of evaluation of five evaluators.
[Evaluation criteria]
5 points: Good foam quality 4 points: Somewhat good foam quality 3 points: Somewhat bad foam quality 2 points: Bad foam quality 1 point: No foam

[Example 30, Comparative Example 13]
In accordance with the composition shown in Table 8, a skin cleanser was prepared according to a conventional method. The obtained skin cleanser was filled in a non-aerosol foamer pump container described in JP-A-7-315463. The following evaluation was carried out for each skin cleanser. The results are also shown in Table 8.

<Skin whitening suppression effect>
From a non-aerosol foamer pump, 6 g of skin cleanser was discharged in the form of foam and washed from near the wrist to the upper part of the elbow. After wiping off the moisture so that it was pressed with a towel, it was rested in an environment of room temperature 23 ° C. and relative humidity 40%, and the skin whitening state of the elbow and forearm after 1 hour was evaluated according to the following criteria. The evaluation is performed by five evaluators who tend to have white arms in winter, and the result is shown as an average value of the evaluation of the five evaluators.
[Evaluation criteria]
5 points: no whitening at all 4 points: almost no whitening 3 points: slightly whitening 2 points: 1 point with significant whitening 1 point: severe whitening

<Foam quality evaluation>
The foam quality was evaluated in the same manner as in Example 27.

The raw materials used in the above examples are shown below.

Claims

(A) an amphoteric surfactant or an anionic surfactant, and (B) 70 to 95 mol% of a monomer unit represented by the following general formula (1) and a monomer represented by the following general formula (2) A cosmetic comprising an acrylic acid-based polymer containing 5 to 30 mol% of a unit as a constituent unit and having a mass ratio represented by (A) / (B) of 0.1 to 50.0 Fee.

(Wherein R 1 represents a hydrogen atom or a methyl group, R 2 represents a hydrogen atom or a —CH 2 OH group, and A represents an oxygen atom or —NH—).

(In the formula, R 3 represents a hydrogen atom or a methyl group, and M represents a hydrogen atom, an alkali metal atom, ammonium or an amine.)
The cosmetic according to claim 1, wherein the component (A) is a surfactant selected from a carboxybetaine type amphoteric surfactant, a sulfate ester type anionic surfactant and an N-acylamino acid type anionic surfactant.