JP2001064151A - Skin cosmetics - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a moisturizing effect which is light and non-greasy after use, has a long-lasting moisturizing effect and an excellent moisturizing effect after washing with water, is excellent in improving rough skin and removing wrinkles, and gives skin a scalp. To provide a skin cosmetic which is also excellent in stability over time. SOLUTION: a. 0.00005 to 2% by weight of an extract of Mokutsu or Astragalus as a dry residue, b. The compound represented by the formula (I) and the alkyl (meth) acrylate are in a weight ratio of 100/0 to 10/90.
A skin cosmetic comprising 0.001 to 10% by weight of a polymer obtained by polymerizing a monomer containing 60 to 100% by weight. Embedded image (R ¹ is a hydrogen atom or a methyl group, R ² , R ³ and R ⁴ are an alkyl group having 1 to 8 carbon atoms, and n is 2 to 4.)

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to skin cosmetics such as lotions, emulsions, creams, packs and the like, and more particularly to a light-feeling feel when used, non-greasy after use, a long-lasting moisturizing effect and after washing with water. The present invention relates to a skin cosmetic which has an excellent moisturizing effect, an excellent effect of improving rough skin, an effect of removing wrinkles, gives a skin to the skin, and has an excellent stability over time.

[0002]

2. Description of the Related Art Normally, the surface of human skin is covered with a sebum film, and the evaporation of water is appropriately suppressed. It is very important to keep skin moisture in an appropriate range from the viewpoint of skin health, and lack of moisture easily causes skin roughness and the like. If you wash your face or take a bath, the sebum film will be temporarily removed and the skin will easily lose its moisture.Therefore, it is necessary to use a moisturizing cosmetic such as a lotion, milky lotion, cream, or serum to supplement the moisture. . Here, in general, polyhydric alcohols such as glycerin, 1,3-butylene glycol, and sorbitol, pyrrolidone carboxylate, and the like are blended in the cosmetics as moisturizers. Although excellent, the water retention ability under low humidity was difficult, and the sustainability of the moisturizing effect could not be maintained.

[0003] In recent years, various substances such as chitin, chitosan and derivatives thereof, protein hydrolysates, acidic mucopolysaccharides such as hyaluronic acid, and plant extracts have been studied as moisturizing components having a high water retention ability under low humidity. However, these moisturizing components having high moisturizing power have an unpleasant stickiness and have a drawback that the feel becomes heavy. In addition, since these components are generally water-soluble, if they are washed with water or the like after use, they run off easily, and a moisturizing effect cannot be obtained unless they are used again. Among them, Kindori (Mokutsu) is a crude drug that has been used as a component of Chinese herbal medicine since ancient times, after collecting the vine stems of akebi or other congener plants, and cutting and drying it. Preventive effect of drugs ｛Yakuhin 95: 1179 (1975)
Year)｝, diuretic effect ｛Chem. Phar. Bull. Vol. 27, p. 1464 (1979)}, and has an anti-inflammatory action {Abstracts of the 90th Annual Meeting of the Pharmaceutical Society of Japan (1970)}. Japanese Patent Application Laid-Open No. Sho 64-4241
No. 1 and JP-A-8-133965 show that the extracted extract has a high whitening effect, and cosmetics and skin external preparations having a high whitening effect using the extracted extract have been proposed. Further, Japanese Patent Application Laid-Open
No. 7581 discloses that an extract of Mokutsu (Mokutsu) has an effect of enhancing skin moisturizing ability, and a skin external preparation containing the extract and having a high moisturizing effect has been proposed. In addition, astragalus is a two-year grass of the legume family, and it has been found that this extract has a high moisturizing effect, a whitening effect, a cell activating effect and the like. Japanese Unexamined Patent Publication (Kokai) No. 1-117814 proposes a cosmetic using this extract. However, cosmetics and skin external preparations containing these Kindori extract and Astragalus extract not only have poor stability due to coloration and sedimentation over time, but also have a little sticky feeling and have a poor touch. It was easy, and the effect of improving the rough skin and the effect of applying a skin patch were weak. In addition, washing with water after use impaired the moisturizing effect.

On the other hand, 2-methacryloyloxyethyl phosphorylcholine (hereinafter referred to as MPC) is a monomer having the same structure as the polar group of phospholipid (phosphatidylcholine) which is a main component of a biological membrane, and its homopolymer and other hydrophobic polymers are used. It has been reported that a copolymer of a hydrophilic monomer and a hydrophilic monomer has a high moisturizing action and a film forming ability. However, these MPC-containing polymers have a high moisturizing effect and a film-forming ability, so that when applied to the skin, they have a drawback that when they are applied to the skin, they are caught with evaporation of moisture, resulting in poor stretchability. As cosmetics using the MPC-containing polymer, Japanese Patent Application Laid-Open Nos.
There are cosmetics described in 157269, JP-A-6-157270, JP-A-6-157271, and the like, but all of them have not only poor spreading at the time of use, but also an effect of giving a peel to the skin and removing wrinkles. The effect was weak.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems, and has a light feel at the time of use, is not sticky even after use, has excellent moisture retention effect and excellent moisture retention effect after washing with water, improves skin roughness and removes wrinkles. An object of the present invention is to provide a skin cosmetic which is excellent in effect, gives a skin patch, and is excellent in stability over time.

[0006]

That is, the present invention provides: a.
0.00005 to 2% by weight of an extract of Mokutsu or Astragalus as a dry residue, b. Formula (I)
And a (meth) acrylic acid alkyl ester in a weight ratio of 100/0 to 10/90, from 60 to 10
Polymer obtained by polymerizing a monomer containing 0% by weight
A skin cosmetic comprising 0.1 to 10% by weight, and further c. A skin cosmetic comprising 0.1 to 30% by weight of a polyhydric alcohol or a partial ester compound thereof.

[0007]

Embedded image

(R ¹ is a hydrogen atom or a methyl group, R ² , R
³ and R ⁴ are an alkyl group having 1 to 8 carbon atoms, and n is 2 to 4. )

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The extract of wood condensate used in the present invention is selected from hydrocarbons, esters, ketones, ethers, halogenated hydrocarbons, alcohols and water as they are or after drying the vine stem of Akebi. One or two
It is obtained by heating or refluxing or immersing together with one or more seeds, but is preferably extracted with water or one or more of alcohols such as ethanol, propyl alcohol, isopropyl alcohol and butanol, and more preferably extracted with water. Things.

[0010] The extract of Astragalus for use in the present invention is selected from hydrocarbons, esters, ketones, ethers, halogenated hydrocarbons, alcohols and water as it is or after drying the whole plant or seed of Astragalus vulgaris. It is obtained by heating or refluxing or immersing together with the seed or two or more kinds, and is preferably extracted with one or more kinds of water or alcohol such as ethanol, propyl alcohol, isopropyl alcohol and 1,3-butylene glycol, More preferably, it is extracted with one or a mixture of two or more of water, ethanol and 1,3-butylene glycol. The extract of Natsumi or Astragalus in the present invention refers to an extraction solution itself or a concentrate thereof.

In the compound of the formula (I) used in the present invention, R ¹ is a hydrogen atom or a methyl group,
R ² , R ³ and R ⁴ are an alkyl group having 1 to 8 carbon atoms, and n is 2 to 4. Among them, the formula (I)
2-methacryloyloxyethyl phosphorylcholine (MPC) represented by I).

[0012]

Embedded image

B. The polymer as a component contains the compound represented by the formula (I) and the alkyl (meth) acrylate in a weight ratio of 100/0 to 10/90,
Preferably 100/0 to 30/70, more preferably 9
It is a polymer (hereinafter, referred to as PC polymer) contained as a constituent ratio of 5/5 to 50/50. The total amount of the compound represented by the formula (I) and the alkyl (meth) acrylate in the PC polymer is 60 to 100% by weight.
, Preferably 70 to 100% by weight, more preferably 80 to 100% by weight. If the ratio is outside the above range, the moisturizing effect persistence, the moisturizing effect after washing with water, and the skin roughness improving effect deteriorate. The weight average molecular weight of the PC polymer is preferably from 10,000 to 10,000,000, more preferably from 50,000 to 1,000,000.
It is.

Compounds of formula (I) and (meth)
When the amount of the alkyl acrylate does not reach 100% by weight, the compound represented by the formula (I) and the alkyl (meth) acrylate can be copolymerized with another monomer. Compounds of formula (I) and (meth)
Other monomers having copolymerizability with the alkyl acrylate are compounds having a double bond capable of addition polymerization,
As long as the effects of the present invention are not impaired, for example, olefinic hydrocarbons such as ethylene, propylene, butene, isobutene, and styrene and their isomerized olefins, multimerized olefins, or olefinic compounds obtained by introducing various derivatives into these olefinic hydrocarbons Compounds: Other than ethylenically unsaturated carboxylic acids such as acrylic acid, methacrylic acid, vinyl acetic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid and their multimers, anhydrides, and other than monohydric alcohols having 1 to 6 carbon atoms Esters with alcohols, or ethylenically unsaturated carboxylic acid derivatives in which a carbonyl group, amino group, cyano group, nitrile group, etc. are introduced; vinyl alcohol and esters thereof with various carboxylic acids, ethers with various alcohols, or These include carbonyl, amino, cyano, Ethylenically unsaturated carboxylic acid derivatives obtained by introducing the like Lil group, vinyl alcohols and esters of these various carboxylic acids, ethers of various alcohols or these carbonyl group, an amino group,
A vinyl alcohol derivative into which a cyano group, a nitrile group, or the like has been introduced may be used.

The alcohol constituting the alkyl (meth) acrylate is an alcohol having 1 to 18 carbon atoms such as methyl alcohol, ethyl alcohol, propyl alcohol, isopropyl alcohol, butyl alcohol, isobutyl alcohol and tert-butyl alcohol. Is an alcohol having 2 to 12 carbon atoms, more preferably an alcohol having 3 to 4 carbon atoms.

C. Used in the present invention. The components include, for example, polyhydric alcohols such as ethylene glycol, propylene glycol, dipropylene glycol, glycerin, diglycerin, polyglycerin, 1,3-butylene glycol, polyethylene glycol, and sorbitol, or acetic acid, sulfuric acid, and phosphoric acid of these polyhydric alcohols. It is a partial ester compound such as a fatty acid, preferably a polyhydric alcohol or a partial ester compound of the fatty acid.

According to the present invention, a. As an ingredient, the extract of Kodori is contained in the total amount of the composition as a dry residue in the range of 0.00005-2.
%, Preferably 0.0001 to 1.5% by weight, more preferably 0.0005 to 1% by weight.
If the amount is less than 0.00005% by weight, the durability of the moisturizing effect, the effect of improving skin roughness and the effect of removing wrinkles will be weak. If the amount exceeds 2% by weight, not only will there be a problem in stability over time but also disadvantageous in cost. However, the dry residue referred to in the present invention usually refers to a solute that is a residue when the extract is dried at 105 ° C. and the solvent is removed. However, when the extract solvent is non-volatile, gas chromatography or high-performance liquid The dissolved mass is calculated as a calculated value from the value obtained by quantifying the amount of the solvent by chromatography or the like, and is regarded as the amount of the dried residue.

B. The content of the PC polymer as a component is 0.001 to 10% by weight, preferably 0.005 to 7% by weight, more preferably 0.01 to 5% by weight in the total amount of the composition.
% By weight. If the amount is less than 0.001% by weight, the effect of improving skin roughness and the effect of imparting to the skin will be weakened, and the moisture retention after washing with water will be weak. If the amount exceeds 10% by weight, slimming and stickiness will be caused, resulting in a poor touch.

On the other hand, in the present invention, in order to further improve the performance and feeling of use of the skin cosmetic, c. It is preferable that 0.1 to 30% by weight, more preferably 1 to 20% by weight, of a polyhydric alcohol or a partial ester compound thereof as a component is blended in the total amount of the composition. That is, when added in an amount of 0.1% or more, the effect of imparting to the skin and the effect of improving the roughness of the skin are improved, but when it exceeds 30% by weight, the feel at the time of use is deteriorated and sticky.

The skin cosmetic of the present invention may contain additives commonly used in cosmetics as long as the performance of the present invention is not impaired. For example, ethanol, lower alcohols such as isopropyl alcohol, liquid paraffin,
Liquid oils such as hydrocarbon oils such as isoparaffin, squalane, petrolatum, and solid paraffin; natural fats and oils such as tallow, lard, and fish oil; synthetic triglycerides such as glyceryl tri-2-ethylhexanoate; isopropyl myristate; isopropyl palmitate; and cetyl palmitate Ester oils such as ethyl oleate, oleyl oleate, octyldodecyl myristate, waxes such as beeswax and carnauba wax;
Silicone derivatives such as linear and cyclic dimethylpolysiloxane, polyether-modified dimethylpolysiloxane, amino-modified dimethylpolysiloxane, oily bases such as ceramide, cholesterol, protein derivatives, lanolin, lanolin derivatives, lecithin, soap, acylmethyltaurine Salts, anionic surfactants such as amide ether sulfates, amphoteric surfactants such as amide amino acid salts, amidopropyldimethylaminoacetate betaine, and nonionics such as polyoxyethylene alkyl ethers, alkyl polyglucosides, and alkanolamides Surfactants, cationic surfactants such as alkyltrimethylammonium chloride,
Semipolar surfactants such as alkyldimethylamine oxide, alginic acid, carboxyvinyl polymer, carboxymethylcellulose, hydroxypropylmethylcellulose, hydroxyethylcellulose, hyaluronic acid, water-soluble polymers such as xanthan gum, pyrrolidone carboxylate, citrate, malic acid Organic or inorganic salts such as salts and common salt, acids and alkalis as pH adjusters, bactericides, chelating agents, antioxidants, ultraviolet absorbers, natural extracts derived from animals and plants, pigments and fragrances can be added.

[0021]

Next, the present invention will be described in more detail by way of examples. Examples 1 to 7 and Comparative Examples 1 to 7 Skin cosmetics, which are transparent or translucent lotions shown in Tables 1 and 2, were prepared and evaluated by the following methods. However, the four components shown in Table 3 were added to the common additive A.
Used as The results are shown in Tables 1 and 2. In addition, the used extract of Kimitsu was prepared as follows. That is, 300 g of water was added to 30 g of the pulverized product after drying the stalk of Kinatsu, heated to 70 ° C., digested with reflux for 3 hours, and filtered to obtain an extract of Kinatsu. The extract was added to 105
The dried residue when dried at ℃ was 1.3%. On the other hand, "Falco Rex Vetchosou" manufactured by Ichimaru Falcos Co., Ltd. was used as the extract of Vetchus var. And
When the extract was dried at 105 ° C, the dried residue was 1.
1%.

[0022]

[Table 1]

1) A copolymer having a weight average molecular weight of about 700,000 composed of 80% by weight of MPC and 20% by weight of butyl methacrylate 2) 70% by weight of MPC and 30% by weight of butyl methacrylate
3) A copolymer having a weight average molecular weight of about 800,000 and a structural unit of MPC 60% by weight, propyl methacrylate 30% by weight, and vinyl acetate 10% by weight 4) MPC 100% by weight %) A copolymer having a weight average molecular weight of about 1,000,000 in a structural unit of 5%) a copolymer having a weight average molecular weight of about 700,000 in a structural unit of 5% by weight of MPC and 95% by weight of butyl methacrylate 6) manufactured by Kibun Food Chemifa Co., Ltd. "Sodium hyaluronate FCH-200"

[0024]

[Table 2]

1) A copolymer having a weight average molecular weight of about 700,000 in a constitutional unit of 80% by weight of MPC and 20% by weight of butyl methacrylate 2) 70% by weight of MPC and 30% by weight of butyl methacrylate
3) A copolymer having a weight average molecular weight of about 800,000 and a structural unit of MPC 60% by weight, propyl methacrylate 30% by weight, and vinyl acetate 10% by weight 4) MPC 100% by weight %) A copolymer having a weight average molecular weight of about 1,000,000 in a structural unit of 5%) a copolymer having a weight average molecular weight of about 700,000 in a structural unit of 5% by weight of MPC and 95% by weight of butyl methacrylate 6) manufactured by Kibun Food Chemifa Co., Ltd. "Sodium hyaluronate FCH-200"

[0026]

[Table 3]

(1) Feeling at the time of use Twenty women (20 to 35 years old) were used as panelists, and the feeling at the time of using the skin cosmetics after washing their face was judged as follows. To obtain an average value of 1.5
The above evaluations were evaluated as cosmetics having a light touch when used. 2 points: When feeling that it spreads well during use and has a light touch without being caught. 1 point: When the user feels that the spread during use is slightly poor and that it is slightly snagged. 0 point: When it is felt that the spread at the time of use is poor and that it is caught and heavy.

(2) Stickiness after use Twenty women (20 to 35 years old) were used as panelists, and after washing their face, the skin feeling after 10 minutes using skin cosmetics was determined as follows. The average value of 20 persons was obtained, and an average value of 1.5 or more was evaluated as a non-sticky cosmetic after use. 2 points: When the skin felt that there was no stickiness. 1 point: When the skin feels slightly sticky. 0 point: When the skin is felt to be very sticky.

(3) Persistence of Moisturizing Effect Twenty women (20 to 35 years old) were used as panelists. After washing their face, using skin cosmetics, the moisture of the skin after 2 hours was determined as follows. The average value of 20 persons was determined, and an average value of 1.5 or more was evaluated as a cosmetic having good moisturizing effect and good durability. 2 points: When the skin feels sufficiently moist as in immediately after use. 1 point: When feeling that the moisture of the skin is slightly less than immediately after use. 0 point: when the user feels that the skin is clearly less moist than immediately after use.

(4) Moisturizing effect after washing with water Twenty women (20 to 35 years old) were used as panelists. After washing their face, 10 minutes after using the cosmetics, the face was washed again only with water, and after 10 minutes. The skin moisture was evaluated as follows, the average value of 20 persons was determined, and an average of 1.5 or more was evaluated as a cosmetic having a good moisturizing effect after washing with water. 2 points: When the skin feels sufficiently moist. 1 point: When the skin feels slightly moist. 0 point: When feeling that the moisture of the skin is not enough.

(5) Skin roughening improvement effect The skin condition when 10 women (24 to 33 years old) who had rough skin were used as panelists and skin cosmetics were used twice a day for two consecutive weeks is described below. The average value of 20 persons was determined, and an average value of 1.5 or more was evaluated as a cosmetic having an effect of improving skin roughness. 2 points: When the user feels that the rough skin has clearly recovered. 1 point: When the user feels that the rough skin has healed a little. 0 point: When feeling that the effect of improving skin roughness is not seen at all.

(6) Wrinkle Removal Effect A panel of 20 women (20 to 35 years old) was used as a panelist to use the skin cosmetics twice a day for two consecutive weeks. The judgment was made, the average value of 20 persons was obtained, and the average value of 1.5 or more was evaluated as a cosmetic having a wrinkle removing effect. 2 points: When wrinkles are felt to be clearly inconspicuous. 1 point: When wrinkles are felt to be slightly inconspicuous. 0 point: When it is felt that there is no wrinkle removing effect.

(7) Skin Beams A panel of 20 women (aged 20 to 35) who used the skin cosmetics twice a day for two consecutive weeks as follows. Judgment was made, the average value of 20 persons was obtained, and an average value of 1.5 or more was evaluated as a cosmetic having an effect of giving a skin peel. 2 points: When the user clearly feels that the skin has peeled off. 1 point: When the skin feels slightly peeled. 0 point: When the skin feels no sticking.

(8) Stability over time The cosmetic was sealed in a transparent glass container and stored at 0 ° C., 25 ° C. and 40 ° C. for 3 months, and its appearance was observed and evaluated according to the following three grades. ：: Good stability (no change in appearance at any temperature) Δ: Slightly poor stability (slightly at any temperature, causing precipitation or slight coloring) ×: Poor stability (any At any temperature, precipitates or separates, or is markedly colored.)

According to Examples 1 to 7, the lotions using the components of the present invention have a light feel at the time of use and are not sticky even after use, and have excellent moisturizing effect and excellent moisturizing effect after washing with water, improving skin roughness. It was excellent in effect and wrinkle removing effect and gave skin a good skin, and also excellent in stability over time. On the other hand, in Comparative Examples 1 to 7, sufficient performance was not obtained. That is, in Comparative Example 1, a. Since no component was added, the persistence of the moisturizing effect was deteriorated, and the skin roughness improving effect and the wrinkle removing effect were weakened. Since the ingredients are not added, the effect of improving skin roughness and the effect of imparting a skin to the skin are weakened, and the moisturizing effect after washing with water is weakened. In Comparative Example 3, b. Since the components were blended beyond the range of the present invention, the spread during use became extremely poor. In Comparative Examples 4 and 5, b. Since the composition ratio of the components is out of the range of the present invention, the durability of the moisturizing effect, the effect of improving the rough skin, and the moisturizing effect after washing with water are deteriorated. Further, in Comparative Examples 6 and 7, b. Since sodium hyaluronate, which is a mucopolysaccharide, is used in place of the components, the stickiness after use, the effect of improving skin roughness, the effect of giving skin a weakness, and the moisturizing effect after washing with water are weakened.

Examples 8 to 10 Skin cosmetics as oil-in-water emulsions shown in Table 4 were prepared and evaluated in the same manner as in Examples 1 to 7. However, the 11 components shown in Table 5 were used as common additive components B as the additive components, and the same extracts as those of Examples 1 to 7 were used for the extract of Kindori and the extract of Astragalus. Table 4 shows the results
Shown in

[0037]

[Table 4]

1) A copolymer having a constitutional unit of 80% by weight of MPC and 20% by weight of butyl methacrylate and having a weight average molecular weight of about 700,000 2) 70% by weight of MPC and 30% by weight of butyl methacrylate
3) a molecular weight of 1540 4) a molecular weight of 4000

[0039]

[Table 5]

As can be seen from Examples 8 to 10, the emulsions of the present invention all have a light feel upon use and are not sticky even after use, are excellent in sustaining moisturizing effect and moisturizing effect after washing with water, and have an effect of improving rough skin and removing wrinkles. To give skin to skin,
The stability with time was also excellent.

Examples 11 to 12 Skin cosmetics, which are oil-in-water emulsified creams shown in Table 4, were prepared.
(8) Stability over time was evaluated by the following method. However, as an additive, Table 6
The following nine components were used as the common additive component C, and the same components as those in Examples 1 to 7 were used for the extraction of Kindori and the extract of Astragalus. Table 4 shows the results.

[0042]

[Table 6]

(8) Stability over time The cosmetics were sealed in a transparent glass container and stored for 1 month at -5 ° C, 25 ° C and 45 ° C, and evaluated according to the following three grades. ：: Good stability (no change in appearance and no blemishes) △: Somewhat poor stability (slight precipitation or slight separation is observed, or slight lumps and lumps are generated) ×: Poor stability (obviously precipitates or separates, or produces lint or lump)

As can be seen from Examples 11 to 12, the creams of the present invention all have a light feel upon use and are not sticky even after use, and are excellent in sustaining moisturizing effect and moisturizing effect after washing with water, improving skin roughness and removing wrinkles. In addition, it gave excellent adhesion to the skin and was excellent in stability over time.

Examples 13 to 14 Skin cosmetics as water-in-oil type emulsified creams shown in Table 4 were prepared and evaluated by the methods of Examples 11 to 12.
However, the 10 components shown in Table 7 were used as common additional components D as the additional components, and the same extracts as those of Examples 1 to 7 were used for the extract of Kindori and the extract of Astragalus. Table 4 shows the results.

[0046]

[Table 7]

According to Examples 13 and 14, the creams of the present invention all have a light feel upon use and are not sticky even after use, and have excellent moisturizing effects and excellent moisturizing effects after washing with water. In addition, it gave excellent adhesion to the skin and was excellent in stability over time.

[0048]

EFFECTS OF THE INVENTION The skin cosmetic of the present invention has a light feel at the time of use and is not sticky even after use, has excellent moisturizing effect and excellent moisturizing effect after washing with water, and has excellent skin roughness improving effect and wrinkle removing effect, as well as on the skin. It gave a beam and was excellent in stability over time.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C083 AA111 AA112 AA122 AB362 AC022 AC072 AC102 AC111 AC122 AC152 AC172 AC182 AC302 AC352 AC391 AC402 AC422 AC442 AC482 AC582 AC852 AD042 AD091 AD092 AD152 AD172 AD332 AD352 AD662 CC02 CC04 CC05 CC07 DD23 DD33 DD33 DD33 EE06 EE13

Claims (2)

[Claims] 1. A method comprising: a. 0.00005 to 2% by weight of an extract of Mokutsu or Astragalus as a dry residue, b. The compound represented by the formula (I) and the alkyl (meth) acrylate are in a weight ratio of 100/0 to 10/9.
A skin cosmetic comprising 0.001 to 10% by weight of a polymer obtained by polymerizing a monomer containing 60 to 100% by weight as 0. Embedded image (R ¹ is a hydrogen atom or a methyl group, R ² , R ³ and R ⁴ are an alkyl group having 1 to 8 carbon atoms, and n is 2 to 4.) 2. The method according to claim 1, further comprising: The skin cosmetic according to claim 1, wherein the cosmetic comprises 0.1 to 30% by weight of a polyhydric alcohol or a partial ester compound thereof.