JP4657752B2 - Gel cosmetic - Google Patents

Description

  The present invention relates to a gel cosmetic containing a crosslinked resin powder having specific rubber elasticity.

  Cosmetics containing powder include makeup cosmetics such as foundation, white powder, blusher, eye shadow, body cosmetics such as body powder, baby powder, body lotion, face lotion, pre-shave lotion, etc. Lotion preparations are commercially available. In these body cosmetics and lotion preparations, the powder is used for the purpose of imparting functions such as improvement on skin, improvement in touch, and hiding effect. Examples thereof include inorganic powders such as silica and talc, and resin powders composed of polymethyl methacrylate, crosslinked polystyrene, nylon, polyethylene, and the like. However, these powder materials have characteristics corresponding to their types, but are insufficient in that they provide a soft feel and a smooth feel.

Patent Documents 1 to 3 disclose external preparations containing crosslinked (meth) acrylate resin particles having a compressive strength of 0.05 to 0.6 kgf / mm ² . Such particles have good elongation and feel, but are not yet satisfactory, and there is a need for particles that have even better feel such as elongation, smoothness, and soft feeling.
JP 2000-186017 A JP 2000-302624 A JP 2002-265529 A

  When gel-like cosmetics containing inorganic powders such as silica and talc and resin powders are applied to the skin, the powders reduce stickiness caused by oily ingredients such as UV absorbers and whitening agents, and improve skin slipping. However, since the powdery peculiar texture remains, a natural skin feel cannot be obtained, and it tends to be disliked especially in a dry environment. In addition, when a powdery ultraviolet protective agent typified by titanium dioxide or the like was blended, the feel was noticeable.

  Accordingly, an object of the present invention is to provide a gel-like cosmetic that can impart a smooth feel without being sticky while ensuring non-stickiness on the skin, and is excellent in sustainability of smoothness and non-stickiness of the skin. Is to provide.

The present invention provides a gel cosmetic containing a crosslinked (meth) acrylate resin powder having a compressive strength of 0.7 to 10 kgf / mm ² .

  The gel-like cosmetic composition of the present invention can give a smooth feel without being sticky while ensuring the non-stickiness of the skin, and is excellent in the smoothness of the skin and the sustainability of the non-stickiness.

  In the present invention, the gel cosmetic refers to a cosmetic obtained by imparting viscosity to a liquid medium selected from water, lower alcohol, polyhydric alcohol and the like with a thickener. The viscosity is preferably 3000 mPa · s or more at 25 ° C. Such cosmetics have an appropriate viscosity when picked up and are therefore easy to apply to the skin. In addition, powder and oily components are stably dispersed in a viscous base, and the characteristics of these added components can be effectively expressed.

  Hereinafter, the components constituting the gel cosmetic of the present invention will be sequentially described.

[Crosslinked (meth) acrylic ester resin powder]
The crosslinked (meth) acrylic acid ester resin powder used in the present invention has a compressive strength of 0.7 to 10 kgf / mm ² , particularly ² to 8 kgf / mm ² from the viewpoint of obtaining non-sticky and smooth skin. mm ² is preferred.

  Here, the compression strength is the following formula based on the load and particle diameter when the resin particle is subjected to a compression test with a microcompression tester MCT-M200 manufactured by Shimadzu Corporation. Is a value calculated by. The compressive strength is measured at 25 ° C.

Compressive strength (kgf / mm ² ) = 2.8 × load (kgf) / {π × particle diameter (mm) × particle diameter (mm)}
The compressive strength of the resin particles can be adjusted as appropriate by controlling the types and blending amounts of the monomer and the crosslinking agent constituting the resin particles.

The crosslinked (meth) acrylic acid ester resin powder used in the present invention includes at least one monomer selected from acrylic acid ester and methacrylic acid ester (hereinafter referred to as (meth) acrylic acid ester monomer) and Cross-linked (meth) acrylic ester resin powder obtained by copolymerizing a monomer component containing a monomer having a carboxyl group is preferable.
In the present specification, “(meth) acryl” is a concept including both acrylic and methacrylic.

  The (meth) acrylic acid ester monomer used in the present invention is preferably a (meth) acrylic acid alkyl ester having 1 to 18 carbon atoms in the alkyl group. Specifically, methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate , Stearyl (meth) acrylate and the like. Among these, alkyl (meth) acrylates having 4 to 18 carbon atoms in the alkyl group such as butyl (meth) acrylate, lauryl (meth) acrylate, and stearyl (meth) acrylate are particularly preferable. You may use these in combination of multiple types. The proportion of the (meth) acrylic acid ester monomer in all monomer components (including a crosslinkable monomer described later) is preferably 30 to 98% by mass, more preferably 50 to 85% by mass. .

  Examples of the monomer having a carboxyl group used in the present invention include (meth) acrylic acid, maleic acid, fumaric acid, crotonic acid, and itaconic acid. You may use these in combination of multiple types. The ratio of the monomer having a carboxyl group in all the monomer components is 0.1 to 30 from the viewpoint of suppressing powder coalescence and obtaining a good powder feel (smoothness, smooth feeling). % By mass is preferable, and 1 to 10% by mass is more preferable.

  A part of the carboxyl groups contained in the crosslinked (meth) acrylic acid ester resin powder may be neutralized. The base for neutralization is preferably an inorganic base such as sodium hydroxide, potassium hydroxide or ammonia, but organic bases such as amines, alkanolamines and basic amino acids can also be used. From the viewpoint of further improving the smoothness and smoothness of the powder, the degree of neutralization is preferably 1 to 30%, particularly preferably 1 to 20%. Here, the degree of neutralization represents the ratio of the number of moles of the added base to the number of moles of the carboxyl group of the monomer having a carboxyl group, expressed as a percentage.

  The monomer component preferably contains a crosslinkable monomer having two or more vinyl groups as a crosslinking agent. Examples of such crosslinkable monomers include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, decaethylene glycol di (meth) acrylate, pentadecaethylene glycol di ( (Meth) acrylate, 1,3-butylene glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, glycerin di (meth) acrylate, (meth) Allyl acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, diethylene glycol di (meth) acrylate phthalate, caprolactone-modified dipentaerythritol hexa (meth) Acrylate, caprolactone-modified hydroxypivalate ester neopentyl glycol di (meth) acrylate, polyester (meth) acrylate, urethane (meth) acrylate and other (meth) acrylate crosslinkable monomers, divinylbenzene, divinylnaphthalene and these And aromatic divinyl monomers such as derivatives thereof. These may be used alone or in combination of two or more. Among these crosslinkable monomers, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, 1,3-butylene glycol di (meth) acrylate, 1,4- (Poly) alkylene glycol di (meth) acrylate such as butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, caprolactone-modified dipentaerythritol hexa (meth) acrylate, caprolactone-modified hydroxypivalate ester neo Pentyl glycol di (meth) acrylate and polyester (meth) acrylate are particularly suitable for use as a gel cosmetic since they have low skin irritation. These crosslinkable monomers are preferably used in an amount of 3 to 50% by mass relative to the total monomer components.

  As a monomer component, in addition to the above (meth) acrylic acid ester monomer, a monomer having a carboxyl group and a crosslinkable monomer, other monomers copolymerizable with these may be copolymerized. Good. Examples of other monomers include styrene, (meth) acrylonitrile, (meth) acrylamide, vinyl acetate, vinyl pyrrolidone and the like.

  Crosslinked (meth) acrylic acid ester resin powder is, for example, a monomer component containing the above (meth) acrylic acid ester monomer, a monomer having a carboxyl group and a crosslinkable monomer, It can be obtained by polymerization by aqueous suspension polymerization, emulsion polymerization, seed polymerization, dispersion polymerization or the like using a polymerization initiator or the like. Of these, the aqueous suspension polymerization method is preferred from the viewpoint that it is easy to obtain spherical and uniform resin powder.

  Aqueous suspension polymerization is performed by mixing an oil phase containing a monomer and an aqueous phase, and then raising the temperature while stirring. At this time, a surfactant is used as a dispersant. The amount of the surfactant used is preferably 0.01 to 50 parts by mass, more preferably 0.01 to 10 parts by mass, and particularly preferably 0.1 to 5 parts by mass with respect to 100 parts by mass of all monomer components. preferable.

  Here, as the surfactant, those having a sulfonic acid (salt) group are preferable. Thereby, it is possible to obtain a more smooth and smooth resin powder.

  Examples of the surfactant having a sulfonic acid (salt) group include those described in paragraph Nos. 0032 to 0036 of JP-A No. 2003-146826. Among them, an alkyl or alkenyl ether sulfonic acid or a salt thereof, which has an alkyl group or alkenyl group having 5 to 30 carbon atoms and may have an average of 0.5 to 25 moles of alkylene oxide added in one molecule, and carbon An acylated taurine having an alkyl group or an alkenyl group of 5 to 30 or a salt thereof is preferred, and an acylated taurine (salt) represented by the following general formula (I) is particularly preferred.

R ¹ CONR ² CH ₂ CH ₂ SO ₃ M (I)
[Wherein, R ¹ represents an optionally substituted alkyl group or alkenyl group having 5 to 30 carbon atoms, R ² represents a hydrogen atom or a methyl group, and M represents a hydrogen atom or a cation. ]
In general formula (I), as R < ¹ >, a C6-C24 alkyl group or alkenyl group is preferable. Specific examples include hexyl, octyl, nonyl, decyl, undecyl, dodecyl, tetradecyl, hexadecyl, octadecyl, eicosyl, docosyl, tetracosyl, decenyl, dodecenyl, tetradecenyl, hexadecenyl, octadecenyl, eicosenyl and the like. Examples of the substituent for the alkyl group or alkenyl group include a hydroxyl group, a carboxyl group, an ester group, an ether group, and an amide group.

  Examples of the cation represented by M include cations such as alkali metal, ammonium, alkyl or alkenylamine having 1 to 22 carbon atoms, alkanolamine having 1 to 22 carbon atoms, basic amino acid salt, lithium, sodium, Alkali metal ions such as potassium are preferred, and sodium ions are particularly preferred.

Examples of the polymerization initiator used for polymerization include benzoyl peroxide, lauroyl peroxide, octanoyl peroxide, benzoyl peroxide, methyl ethyl ketone peroxide, diisopropyl peroxydicarbonate, cumene hydroperoxide, t-butyl hydroperoxide and the like. And oil-soluble azo compounds such as 2,2′-azobisisobutyronitrile and 2,2′-azobis (2,4-dimethylvaleronitrile). The addition amount of the polymerization initiator is preferably 0.1 to 10% by mass with respect to all monomer components.
The polymerization temperature and the polymerization time are not particularly limited, but the polymerization temperature is preferably 40 to 100 ° C. and the polymerization time is preferably 1 to 15 hours.

  The shape of the resin powder of the present invention is preferably a spherical body because it feels good on the skin. The average particle size is preferably 1 μm or more, more preferably 1.5 μm or more, and particularly preferably 2 μm or more from the viewpoint of reducing squeakiness. On the other hand, from the viewpoint of suppressing roughness and further improving the skin fixing property, it is preferably 10 μm or less, more preferably 8 μm or less, and particularly preferably 6 μm or less.

  The average particle size was measured using a laser diffraction type particle size distribution measuring device (for example, LA-920 manufactured by Horiba, Ltd.), and the weight average particle size of a water suspension of powder at 20 ° C. with a relative refractive index of 1.1. It can be determined by measuring the diameter.

[Ingredients that form gel]
As described above, the gel cosmetic is based on a liquid medium such as water, a lower alcohol, a polyhydric alcohol, or the like, which is given viscosity with a thickener.

  As said lower alcohol, C1-C4 alcohol is mentioned, For example, ethanol and isopropanol are preferable and ethanol is especially preferable. As the polyhydric alcohol, glycerin, propylene glycol, 1,3-butanediol and the like are preferable.

  Water and these alcohols can be appropriately combined to form a liquid medium. The content of the liquid medium in the gel cosmetic of the present invention is stable, dry, refreshing, and has a non-sticky feel. 30-97 mass% is preferable from a point, and 40-95 mass% is still more preferable.

  Examples of the thickener include carboxyvinyl polymer, acrylic acid / alkyl methacrylate copolymer, and acrylic acid / alkyl methacrylate copolymer is particularly preferable. As an acrylic acid / alkyl methacrylate copolymer, the following formula (1)

(In the formula, R represents an alkyl group having 10 to 30 carbon atoms, x and y each represents a mol% of each unit in the copolymer, x = 80 to 99.9 mol%, y = 0.1 to 0.1) 20 mol%)
A copolymer having a structure represented by As such a copolymer, a commercial item can be used, for example, PEMULEN TR-1, PEMULEN TR-2, Carbopol ETD2020, etc. by Noveon Inc. can be mentioned.

  As the thickener, in addition to the above vinyl polymer, a cellulose polymer such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, methylhydroxypropyl cellulose may be used in combination.

  The content of the thickener in the gel cosmetic of the present invention is preferably 0.05 to 2% by mass from the viewpoint of coating effect such as thickening effect, non-stickiness, good spread, etc. 1% by mass is more preferable.

The gel cosmetic of the present invention is characterized by containing the above-mentioned crosslinked (meth) acrylic ester resin powder, UV protective cosmetic, whitening cosmetic, deodorant, face and body moisturizing cosmetic, etc. Can be applied to.
The content of the crosslinked (meth) acrylic acid ester resin powder in the gel cosmetic of the present invention is preferably 0.5 to 50% by mass from the viewpoint of suppressing the stickiness of the skin and preventing the skin from becoming white. 30 mass% is still more preferable, and 1-15 mass% is especially preferable.

  The gel cosmetic of the present invention is particularly useful as an ultraviolet protective cosmetic containing an ultraviolet absorber. Examples of the ultraviolet absorber include cinnamic acid, benzophenone, urocanic acid, benzoic acid, salicylic acid, benzoylmethane, triazine, anthranilic acid and the like. Specifically, paramethoxycinnamic acid benzyl, paramethoxycinnamic acid 2-ethylhexyl, paramethoxycinnamic acid 2-ethoxyethyl, diparamethoxycinnamic acid mono-2-ethylhexanoic acid glyceryl, paramethoxycinnamic acid isopropyl-diisopropyl cinnamic acid ester mixture, etc. Cinnamic acid ultraviolet absorbers; hydroxymethoxybenzophenone, hydroxymethoxybenzophenone sulfonic acid, sodium hydroxymethoxybenzophenone sulfonate, dihydroxymethoxybenzophenone, dihydroxymethoxybenzophenone sodium disulfonate, dihydroxybenzophenone, tetrahydroxybenzophenone, etc .; urocanine Urocanic acid UV absorbers such as acid and ethyl urocanate; paraaminobenzoic acid Benzoic acid-based ultraviolet rays such as ethyl paraaminobenzoate, glyceryl paraaminobenzoate, amyl paradimethylaminobenzoate, octyl paradimethylaminobenzoate, ethyl 4- [N, N-di (2-hydroxypropyl) amino] benzoate Absorbents; salicylic acid-based ultraviolet absorbers such as ethylene glycol salicylate, phenyl salicylate, octyl salicylate, benzyl salicylate, p-tert-butylphenyl salicylate, homomenthyl salicylate; 4-tert-butyl-4′-methoxybenzoylmethane, oxybenzone, 2 , 4,6-tris [anilino-p- (carbo-2′-ethyl-1′-hexyloxy)]-1,3,5-triazine, 2- (2-hydroxy-5-methylphenyl) benzotriazole, Menthyl anthranilate And the like, from the viewpoint of stability, cinnamic acid, benzoyl methane, triazine-based UV absorber is preferred. Two or more of these ultraviolet absorbers may be used in combination.

  The content of the ultraviolet absorber in the gel cosmetic of the present invention is preferably 1 to 20% by mass, more preferably 2 to 10% by mass, from the viewpoint of non-stickiness of the skin and the ultraviolet absorption effect.

  In order to further enhance the ultraviolet protection effect, an ultraviolet scattering agent made of inorganic powder or the like may be contained. Examples of the ultraviolet scattering agent include titanium dioxide, zinc oxide, iron oxide, zirconium oxide, aluminum oxide, and the like, and those obtained by finely pulverizing or compounding them. In particular, titanium dioxide and zinc oxide are preferable. Two or more kinds of ultraviolet scattering agents may be used in combination, and the content thereof is preferably 1% by mass or less, particularly preferably 0.5% by mass or less from the viewpoint of stability.

  The gel cosmetic of the present invention can contain an oil agent in terms of feeling adjustment. Such oils include fats and oils such as sunflower oil and cacao oil; ester oils such as neopentyl glycol dicaprate, isononyl isononanoate and isopropyl myristate; higher alcohols such as stearyl alcohol and cetyl alcohol; isostearic acid, undecylenic acid and oleic acid Fatty acids such as: silicone oils such as dimethyl silicone and cyclic silicone, and the like, and ester oils and silicone oils are particularly preferable in terms of improving touch. 0.1-10 mass% is preferable and, as for content of the oil agent in the gel cosmetics of this invention, 0.1-5 mass% is still more preferable.

  In addition to the above components, the gel cosmetic of the present invention includes a surfactant, a whitening agent, a bactericidal agent, an antiperspirant, a moisturizer, a refreshing agent, a fragrance, and a colorant, as long as the effects of the present invention are not impaired. Etc. can be blended.

  In the gel cosmetic of the present invention, the cross-linked (meth) acrylic ester resin powder having the specific compressive strength and the various components are dispersed in a liquid medium imparted with a viscosity by a thickener. It has a form. The content of water is preferably 10 to 68% by mass, and more preferably 12 to 55% by mass, from the viewpoints of stability, non-stickiness, and a feeling of application such as a refreshing feeling.

  The pH (25 ° C.) of the gel cosmetic of the present invention is preferably mildly acidic with respect to the skin, that is, 4 to 7, and more preferably 5 to 7. Here, the pH can be measured with a pH meter as it is when the liquid medium contains a large amount of water. When the amount of water is relatively small, an aqueous solution obtained by diluting the gel cosmetic with water, for example, 10 times can be measured with a pH meter.

  When applied to the skin, the gel cosmetic of the present invention suppresses the stickiness and bulkiness of the skin, and further maintains these feelings, leaving an active ingredient such as an ultraviolet absorber on the skin for a long time. it can.

  Unless otherwise specified,% in the examples is% by mass.

Production Example 1
In a beaker, 85 g of lauryl methacrylate, 15 g of ethylene glycol dimethacrylate, and 2 g of lauroyl peroxide were charged, mixed and stirred to dissolve. Here N- stearoyl -N- methyl taurate sodium (SMT) was added to ion-exchanged water 400g obtained by 0.75g dissolved, the particle size with a homomixer was dispersed until the 2.4 [mu] m.

  The dispersion was poured into a four-necked flask and purged with nitrogen for 30 minutes while stirring. The temperature inside the flask was heated to 80 ° C. with an oil bath. After reaching 80 ° C., polymerization was performed for 5 hours, and then cooled to room temperature. The dispersion liquid of the polymerized particles was lyophilized and the particles were collected to obtain a resin powder A.

Production Example 2
A beaker was charged with 82 g of lauryl methacrylate, 3 g of methacrylic acid, 15 g of ethylene glycol dimethacrylate, and 2 g of lauroyl peroxide, and dissolved by stirring. To this, 400 g of ion-exchanged water in which 0.75 g of sodium dodecyl sulfate (SDS) was dissolved was added and dispersed with a homomixer until the particle size became 2.5 μm.

  The dispersion was poured into a four-necked flask and purged with nitrogen for 30 minutes while stirring. The temperature inside the flask was heated to 80 ° C. with an oil bath. After reaching 80 ° C., polymerization was performed for 5 hours, and then cooled to room temperature. The dispersion liquid of the polymerized particles was lyophilized and the particles were collected to obtain a resin powder B.

Production Example 3
A beaker was charged with 82 g of lauryl methacrylate, 3 g of methacrylic acid, 15 g of ethylene glycol dimethacrylate, and 2 g of lauroyl peroxide, and dissolved by stirring. 400 g of ion-exchanged water in which 0.75 g of sodium N-stearoyl-N-methyltaurine (SMT) was dissolved was added thereto and dispersed with a homomixer until the particle size became 2.2 μm.

  The dispersion was poured into a four-necked flask and purged with nitrogen for 30 minutes while stirring. The temperature inside the flask was heated to 80 ° C. with an oil bath. After reaching 80 ° C., polymerization was performed for 5 hours, and then cooled to room temperature. The dispersion liquid of the polymerized particles was lyophilized and the particles were collected to obtain resin powder C.

Production Example 4
In Production Example 3, a neutralized product of Resin Powder C was obtained in the same manner as in Production Example 3 except that 3.9 g of 1N NaOH was added dropwise to the dispersion of polymerized particles for neutralization. The neutralized product of the resin powder C had a carboxyl group neutralization degree of 11.2%.

  When the compressive strength and average particle size of the resin powders A, B, C, and C obtained in Production Examples 1 to 4 were measured by the following methods, the results shown in Table 1 were obtained.

<Compressive strength measurement method>
The resin particle is subjected to a compression test up to a load of 1 gf at a constant load speed of 29 mgf / s using a micro compression tester MCT-M200 manufactured by Shimadzu Corporation. From the following formula. Ten samples were measured, and the average value was taken as the compressive strength.

Compressive strength (kgf / mm ² ) = 2.8 × load (kgf) / {π × particle diameter (mm) × particle diameter (mm)}.

<Average particle size measurement method>
Using a Horiba, Ltd. laser diffraction scattering particle size distribution analyzer (model number: LA920), the relative refractive index is 1.10 (the refractive index of the resin powder is 1.46, the refractive index of water is 1). .33), the median diameter when the particle diameter was measured was defined as the average particle diameter.

Examples 1-4 and Comparative Examples 1-2
When a gel-form UV protective cosmetic for body having the composition shown in Table 2 was prepared, and five professional panelists applied this cosmetic to the forearm and scored the following evaluation items for the feeling of use as follows: The average score of 5 persons was evaluated according to the following criteria. The results are shown in Table 2.

<Evaluation items>
・ Non-sticky score 4 ... No stickiness Score 3 ... Not sticky score 2 ... Slightly sticky score 1 ... Slightly sticky / less sticky Score 4 ... No touch score 3 ... No touch score 2 ... Slight touch Sticking score 1… Duration and persistence of non-stickiness (1 hour after application)
Score 4 ... Stickiness persists Score 3 ... Stickiness persists slightly Score 2 ... Stickiness does not persist much Score 1 ... Stickiness does not persist <Criteria>
Average score 3.5-4.0 ... ◎
Average score 2.5-3.4 ... ○
Average score 1.5-2.4 ... △
Average score 1.0-1.4 ... ×

* 1: Methylsiloxane network polymer powder (manufactured by Shin-Etsu Chemical Co., Ltd., compressive strength 12 kgf / mm ² , average particle size 2 μm)
* 2: Acrylic acid / alkyl methacrylate copolymer (Noveon Inc.).

Example 5
A gel UV protective cosmetic having the following composition was prepared. The obtained gel-like UV protective cosmetic had no stickiness on the skin and was not sticky, and the stickiness did not persist even after 1 hour of application.

<Composition>
Resin powder B 6.00%
PEMULEN TR-2 ^{* 1} 0.20
Carbopol ETD2020 ^{* 2} 0.20
2-Ethylhexyl paramethoxycinnamate 5.00
Triethanolamine 0.20
Ethanol 40.00
Purified water 48.40
Total 100.00
* 1: Acrylic acid / alkyl methacrylate copolymer, manufactured by Noveon Inc.
* 2: Acrylic acid / alkyl methacrylate copolymer, manufactured by Noveon Inc.

Example 6
A gel-like deodorant having the following composition was prepared. The gel-like deodorant thus obtained had no stickiness on the skin and did not become sticky, and the stickiness did not persist even after 1 hour of application.

<Composition>
Resin powder A 4.50%
Isopropyl methylphenol 0.20
PEMULEN TR-1 ^{* 1} 0.20
Triethanolamine 0.20
Neopentyl glycol dicaprate 0.50
Perfume 0.02
Ethanol 60.00
Purified water 34.38
Total 100.00
* 1: Acrylic acid / alkyl methacrylate copolymer, manufactured by Noveon Inc.

Example 7
A gel whitening agent having the following composition was prepared. The resulting gel-like whitening agent was not sticky to the skin and did not become sticky, and the stickiness persisted even after 1 hour of application.

<Composition>
Neutralized product of resin powder C 4.00%
L-ascorbic acid-2-glucoside 2.00
PEMULEN TR-2 ^{* 1} 0.50
Sodium hydroxide 0.40
Glycerin 5.00
Propylene glycol 2.00
Polyoxyethylene sorbitan monostearate (20EO) 0.20
Octyldodecyl myristate 0.30
Ethanol 5.00
Purified water 80.60
Total 100.00
* 1: Acrylic acid / alkyl methacrylate copolymer, manufactured by Noveon Inc.

Claims (4)

A gel-like cosmetic containing a crosslinked (meth) acrylic acid ester resin powder having a compressive strength of 0.7 to 10 kgf / mm ² ;
The crosslinked (meth) acrylic acid ester resin powder is obtained by copolymerizing a monomer component containing at least one monomer selected from acrylic acid ester and methacrylic acid ester and a monomer having a carboxyl group. Gel-like cosmetics . Gel-like cosmetic according to claim 1, wherein the degree of neutralization of the carboxyl groups in the resin powder is 1 to 30%. The gel cosmetic according to claim 1 or 2 , wherein the resin powder has an average particle diameter of 1 to 10 µm. An ultraviolet protective cosmetic, gel-like cosmetic according to any one of claims 1-3.