JP2847613B2 - Skin cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin cosmetic, and more particularly, to a skin cosmetic which has no stickiness, can give a moist feeling to the skin, and has a good feeling without creaking.

[0002]

2. Description of the Related Art
For the purpose of preventing and improving skin roughness, betaines are used in skin cosmetics and external preparations (Japanese Patent Application Laid-open No.
No. 152415, JP-A-1-275511, U.S. Pat. No. 3,666,863).

[0003] However, these betaines have a less sticky feeling than amino acids and the like conventionally used as moisturizers, etc., but have a squeaky feeling peculiar to betaines, and the feel of cosmetics and the like containing the betaines is reduced. It had the disadvantage of becoming worse.

[0004] Therefore, there has been a demand for a skin cosmetic which can prevent and improve skin roughness and has less squeaky feeling.

[0005]

Under such circumstances, the present inventors have conducted intensive studies and as a result, it has been found that the use of betaines and silicones in combination provides no stickiness and gives a moist feeling to the skin. The present inventors have found that a skin cosmetic which can be obtained and has a reduced feeling of creaking peculiar to betaines can be obtained, and the present invention has been completed.

That is, the present invention relates to (A) betaines:
And (B) a skin cosmetic containing silicones.

The betaines of the component (A) used in the present invention are N-trialkyl-substituted amino acids, such as glycine betaine, γ-butyrobetaine, homalin, trigonelline, β-alanine betaine, carnitine, atrinin, and homoserine betaine. , Antopreulin, valine betaine, lysine betaine, ornithine betaine, alanine betaine, taurobetaine, stachidrine, betaine glutamate, phenylalanine betaine and the like. Of these, glycine betaine is particularly preferred, and commercially available products such as aminocoat (manufactured by Asahi Foods) can also be used.

[0008] These betaines can be used alone or in combination of two or more.
To 10% by weight (hereinafter simply indicated as%), particularly 0.001%
When it is blended in an amount of 5%, the skin can be given a particularly moist feeling, which is preferable.

The silicones of the component (B) used in the present invention include, for example, silicone oil derivatives described in JP-A-4-82820 and JP-A-63-313713. . Specifically, the following (B-1) to (B-5) are exemplified.

(B-1) Dimethylpolysiloxane represented by the formula (1): (CH ₃ ) ₃ SiO [(CH ₃ ) ₂ SiO] _a Si (CH ₃ ) ₃ (1) (where a is 3 As the methylpolysiloxane represented by the general formula (1), for example, those commercially available under the trade name of KF96 manufactured by Shin-Etsu Chemical Co., Ltd. can be used.

(B-2) Methylphenylpolysiloxane represented by the formula (2):

[0012]

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(Where b, c, and d represent numbers whose sum is 1 to 5000. However, when c is 0, d
Is not 0, and c is not 0 when d is 0.) Methylphenylpolysiloxane represented by the general formula (2) is also widely known, and is commercially available, for example, under the trade name of KF50 manufactured by Shin-Etsu Chemical Co., Ltd. Etc. can be used.

(B-3) Polyether-modified silicone represented by the formula (3), (4), (5) or (6):

[0015]

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[0016]

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[0017]

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Or a methyl group, m represents a number of 1 to 500 (preferably 10 to 200), and n represents 0 to 100
(Preferably 0-10), o represents a number of 0-6 (preferably 2-3), p represents a number of 1-100 (preferably 2-10), and q represents a number of 0-100. 100 (preferably 0 to 20)]

[0019]

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Wherein r is 1 to 300 (preferably 1 to 300)
50), s is 2 to 500 (preferably 2 to 50), t is 0 to 6 (preferably 2 to 3), u is 1 to 50 (preferably 2 to 20), and v is 0 to 50 (preferably 0-20)] Silicone ether copolymers represented by the general formulas (3), (4), (5) and (6) are also widely known, for example, KF351, KF352, etc. from Shin-Etsu Chemical Co., Ltd. And SILWET L-7002, S from Nippon Unicar Co., Ltd.
They are commercially available under trade names such as ILVET FZ-2110, and these can be used.

(B-4) A cyclic silicone represented by the formula (7):

[0022]

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[In the formula (7), w represents a number of 3 to 8, and R
³ represents an alkyl group having 1 to ³ carbon atoms)

(B-5) An alkyl-modified silicone represented by the formula (8) or (9):

[0025]

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[0026]

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[In the formula (9), z and a 'are each 1 to 1,
000 (preferably 1 to 200), and R ⁶ represents an alkyl group having 10 to 16 carbon atoms.]

Among these silicones, it is preferable to use a cyclic silicone from the viewpoint of feel. It is preferable to use a combination of dimethylpolysiloxane, methylphenylpolysiloxane or cyclic silicone with polyether-modified silicone or alkyl-modified silicone in view of emulsion stability.

The silicone of the component (B) may be one kind or two kinds.
More than one species may be used in combination, with 0.1% being present in the total composition.
When the amount is from 01 to 40%, especially from 0.5 to 20%, the skin is given a particularly moist feeling and a smooth feeling is preferred.

The skin cosmetic of the present invention contains, in addition to the above essential components, components used in ordinary cosmetics and the like, for example, glycerides such as castor oil, cacao oil, mink oil, avocado oil and olive oil; Higher alcohols such as alcohol, oleyl alcohol, hexadecyl alcohol, lauryl alcohol, stearyl alcohol, isostearyl alcohol, and 2-octyldodecanol;
Polyhydric alcohols such as propylene glycol, polypropylene glycol, and glycerin; isopropyl myristate, hexyl laurate, cetyl lactate, propylene glycol monostearate, oleyl oleate, 2-
Esters such as hexadecyl ethylhexanoate and octyldodecyl myristate; higher alcohols such as polyoxyethylene ethyl ether, polyoxypropylene cetyl ether, and polyoxyethylene polyoxypropylene stearyl ether; propylene oxide ethylene oxide adducts; dialkyldimethylammonium chloride , Cationic surfactants such as distearyldimethylammonium chloride, lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, and stearyltrimethylammonium chloride; polymer compounds such as polyvinylpyrrolidone, vinyl acetate ether, acidic acrylic, and amphoteric acrylic; In addition, a fragrance, a pigment, an ultraviolet absorber, a preservative, an antioxidant, and the like can be appropriately compounded as long as the effects of the present invention are not impaired.

The skin cosmetic of the present invention can be produced according to a usual method, and can be in any form such as an emulsion type, a dispersion type, a two-layer type and a solubilized type.

[0032]

The skin cosmetic of the present invention has no stickiness, can give a moist feeling to the skin, and has a good feeling without the creaking feeling peculiar to betaines.

[0033]

EXAMPLES Next, the present invention will be further described with reference to examples, but the present invention is not limited to these examples.

Example 1 A skin cosmetic composition having the composition shown in Table 1 was produced by a conventional method, and when used, the feel (moist feeling, non-stickiness,
(The lack of squeaky feeling) was evaluated. Table 1 shows the results. (Evaluation method) Ten female panelists used each skin cosmetic on the washed skin and evaluated according to the following criteria. ：: 6 or more respondents who answered “good” △: 3 to 5 respondents who answered “good” ×: less than 3 out of 10 respondents who answered “good”

[0035]

[Table 1]

Example 2 An emulsion having the following composition was produced by a conventional method.

(Table 2) (Ingredient) Stearic acid 2.0 (%) Squalane 2.0 Olive oil 0.5 Cetanol 0.5 Silicone oil ^{* 3} 3.0 2-Arginine hexahexyldecyl phosphate 2.0 Polyoxyethylene (40EO) ) Hardened castor oil 0.5 Glycerin 10.0 1,3-butylene glycol 5.0 Glycine betaine 1.0 Purified water Balance 100.0 * 3: SH200 (100cs; manufactured by Dow Corning Toray Silicone Co., Ltd.)

Example 3 An emulsion having the following composition was produced by a conventional method.

[Table 3] (Components) Palmitic acid 0.5 (%) Olive oil 2.0 Cetanol 1.0 Dimethyl polysiloxane ^{* 4} 5.0 Monohexadecyl phosphate sodium salt 2.0 Sorbitan monostearate 0.5 Glycerin 15 5.0 Ethanol 5.0 Glycine betaine 2.0 Purified water Balance 100.0 * 4: SH344 (manufactured by Dow Corning Silicone Toray)

Example 4 A lotion having the following composition was produced by a conventional method.

(Ingredients) Glycine betaine 0.5 (%) 86% glycerin 15.0 Polyethylene glycol ^{* 5} 2.0 Hyaluronic acid 0.05 Polyether-modified silicone ^{* 6} 0.5 Dipropylene glycol 5.0 Purified water Balance 100.0 * 5: PEG 1500 (manufactured by Sanyo Chemical) * 6: Silicone L-7001C (manufactured by Nippon Unicar)

Example 5 A pack having the following composition was produced by a conventional method.

(Table 5) (Components) Polyvinyl alcohol ^{* 7} 11.7 (%) 1,3-butylene glycol 2.5 glycerin 1.0 Titanium oxide 1.5 Glycine betaine 0.5 Dimethyl polysiloxane ^{* 8} 1.0 Polyether Modified silicone ^{* 9} 1.0 Purified water Balance 100.0 * 7: Gohsenol EG-30 (Nippon Synthetic Chemical Industry Co., Ltd.) * 8: KF-96A 1cs (Shin-Etsu Chemical Co., Ltd.) * 9: Silicone L-7001C ( (Manufactured by Nippon Unicar)

Example 6 A gel having the following composition was produced by a conventional method.

Table 6 (Components) Polyacrylic acid ^{* 10} 0.5 (%) Potassium hydroxide 0.15 Glucam 10.0 86% Glycerin 10.0 Glycine betaine 2.0 Polyether-modified silicone ^{* 11} 0.5 Dimethylpoly Siloxane ^{* 12} 1.0 Purified water Balance 100.0 * 10: Carbopol (Goodrich) * 11: KF-945A (Shin-Etsu Chemical) * 12: KF-96A 50cs (Shin-Etsu Chemical)

Each of the skin cosmetics obtained in Examples 2 to 6 had no stickiness, was able to give a moist feeling to the skin, and had a good feeling without creaking.

Continuation of the front page (56) References JP-A-6-9368 (JP, A) JP-A-5-317687 (JP, A) JP-A-3-11009 (JP, A) JP-A-1-233209 (JP) , A) JP-A-6-293625 (JP, A) JP-A-1-275511 (JP, A) Table 7-7-501077 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB Name) A61K 7/00-7/50

Claims (2)

(57) [Claims] (A) glycine betaine, γ-butyrobetaine, homalin, trigonelin, β-alanine betaine, carnitine, atrinine, homoserine betaine, antpreulin, valine betaine, lysine betaine, ornithine betaine, alanine betaine, taurobetaine, Betaines selected from stachidrine, betaine glutamate and phenylalanine betaine 0.5 to 5
Skin cosmetics containing 0.01% to 40% by weight of (B) silicones. 2. The skin cosmetic according to claim 1, wherein (A) the betaines are glycine betaine.