JPH1081614A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a hair cosmetic capable of imparting luster, smoothness and conditioning effects and manifesting sustained effects by combining two or more kinds of α-hydroxycarboxylic acids with protein derivatives and a highly polymerized dimethyl polysiloxane having a specific polymerization degree. SOLUTION: This hair cosmetic is prepared by combining (A) two or more α-hydrocarboxylic acids with (B) one or more selected from proteins, protein hydrolyzates and protein derivatives and (C) one or more of high-polymerization degree dimethyl polysiloxane having 800-20,000 average polymerization degree (n). Citric acid, lactic acid, glycolic acid and tartaric acid are preferred as the ingredient A and the formulation amount of the ingredient A is 0.01-5wt.%. A collagen hydrolyzate and a keratin hydrolyzate are preferred as the ingredient B and the formulation amount thereof is 0.0001-5wt.%. A compound represented by the formula, etc., are preferred as the ingredient C and the formulation amount thereof is 0.01-10wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cosmetic which imparts shine, smoothness and excellent conditioning effects to hair, and which maintains such effects for a long time.

[0002]

2. Description of the Related Art In general, hair is damaged and deteriorated by hair washing, brushing, heat from a dryer, hair color, bleaching agent, etc., and often loses luster, and dryness often causes dryness. Are known. In view of the above, hair cosmetics containing α-hydroxycarboxylic acid, which is a carboxylic acid having a hydroxyl group at the α-position, for the purpose of repairing and protecting the hair against the above-mentioned deterioration of hair damage have been proposed. α-Hydroxycarboxylic acid gives gloss to hair and has a certain effect of preventing hair damage, but has insufficient adhesion to hair, so that hair cosmetics containing α-hydroxycarboxylic acid are still satisfactory. I couldn't do it. Japanese Patent Application Laid-Open No. 8-34710 proposes a hair cosmetic which gives a gloss and conditioning effect by adding an α-hydroxycarboxylic acid to a specific surfactant and a conditioning agent, but the effect is maintained. Sex was not yet satisfactory. Accordingly, it is an object of the present invention to provide a hair cosmetic that repairs and prevents hair damage, gives the hair a luster and smoothness, and can maintain those effects for a long time.

[0003]

Under these circumstances, the present inventors have conducted intensive studies and as a result, have found that two or more α-hydroxycarboxylic acids can be combined with a protein derivative and a highly polymerized dimethylpolysiloxane having a specific polymerization degree. The present inventors have found that the above effects can be greatly maintained by combining them with a hair cosmetic composition as compared with a conventional hair cosmetic composition containing an α-hydroxycarboxylic acid, and completed the present invention.

That is, the present invention provides the following component (A):
(B) and (C) (A) 2 of α-hydroxycarboxylic acid
Or more, (B) one or more selected from proteins, protein degradation products and protein derivatives, (C) average degree of polymerization n = 80
0 to 20,000 highly polymerized dimethylpolysiloxane
An object of the present invention is to provide a hair cosmetic containing a seed or two or more kinds.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The α-hydroxycarboxylic acid of component (A) used in the present invention comprises a mono- or polycarboxylic acid containing one or more hydroxyl functional groups, and at least one of these hydroxyl functional groups is used. , Introduced into the acid at the α-position (carbon adjacent to the carboxyl functional group). Examples of such compounds include citric acid, lactic acid, methyl lactic acid, phenyl lactic acid, maleic acid,
Mandelic acid, glycolic acid, tartronic acid, tartaric acid, gluconic acid and the like can be mentioned, among which citric acid, lactic acid, glycolic acid and tartaric acid are preferred.

The effect of preventing hair damage when two or more α-hydroxycarboxylic acids are used in combination is significantly more remarkable than when only one α-hydroxycarboxylic acid is used. From the viewpoint of exhibiting a higher synergistic effect, the amount of the α-hydroxycarboxylic acid compounded most in the component (A) is 90% by weight of the total amount of the α-hydroxycarboxylic acid (hereinafter simply referred to as%). ) Is preferably
In particular, 70% or less is preferable. As the above-mentioned α-hydroxycarboxylic acid, α-hydroxycarboxylic acid extracted from plants such as sugarcane and α-hydroxycarboxylic acid extracted from fruits such as lemon, grape and apple are particularly preferable. The α-hydroxycarboxylic acid extracted from such fruits usually contains two or more selected from citric acid, lactic acid, glycolic acid and tartaric acid.

It is preferable that the above-mentioned α-hydroxycarboxylic acid is added to the hair cosmetic in an amount of 0.01 to 5%, particularly 0.05 to 3%, since the effect of imparting gloss is particularly enhanced. 0.01%
If it is less than 5%, the effect of imparting luster is not exhibited, and if it exceeds 5%, a sticky feeling is produced and the feel of the hair becomes poor.

[0008] The protein, protein degradation product and protein derivative of the component (B) used in the present invention are not particularly limited, but include proteins usually obtained from the natural world and their degradation products and derivatives. Specifically, soy protein,
Wheat protein, glutelin, whey powder, soy casein, fibroin, glucagon, elastin, albumin fibrinogen, hemoglobin, globulin or collagen hydrolyzate, desamide collagen, modified gelatin, keratin hydrolyzate, silk, casein, egg yolk, Animal protein derivatives obtained from egg white and the like are exemplified.
Examples of the collagen hydrolyzate include water-soluble collagen. The water-soluble collagen can be obtained by subjecting connective tissues such as skin, bones, tendons and fish skin of animals or animal fetuses to treatment with an acid, alkali, enzyme or the like, and is not particularly limited as long as it is water-soluble. Among the components (B), animal proteins are preferable, and collagen hydrolyzate and keratin hydrolyzate are particularly preferable. Further, as the protein hydrolyzate, those having a molecular weight of 1,000 or more are preferable.

The above-mentioned proteins, proteolysates and protein derivatives can be used alone or in combination of two or more, and 0.0001 to 5%, particularly 0.005 to 1%, in hair cosmetics.
%, A synergistic effect of amino acids and protein is obtained,
It is also preferable from the viewpoint of obtaining a preferable viscosity in use.

The component (C) used in the present invention comprises:
The following general formula

[0011]

Embedded image

Wherein the average degree of polymerization n =
800-20,000. As a preferable range of the average degree of polymerization, the average degree of polymerization n = 1,000 to 50,000
00, for example, those commercially available under the trade name KF96 manufactured by Shin-Etsu Chemical Co., Ltd. can be used. Here, the average degree of polymerization n refers to the number of repetitions of the dimethylsiloxane group portion.

[0013] Further, such a highly polymerized dimethylpolysiloxane is preferably used in the form of an emulsion. As the emulsion, a water-emulsifying silicone emulsion obtained by emulsifying the highly polymerized dimethylpolysiloxane with water using a surfactant can be used. Although the surfactant is not particularly limited, higher alcohol ethylene oxide adduct, alkylphenol ethylene oxide adduct, fatty acid ethylene oxide adduct, polyhydric alcohol fatty acid ester ethylene oxide adduct, higher alkylamine ethylene oxide adduct, fatty acid amide ethylene oxide Additives, ethylene oxide adducts of fats and oils, polypropylene glycol ethylene oxide adducts, fatty acid esters of glycerol, fatty acid esters of pentaerythritol, fatty acid esters of sorbitol and sorbitan, fatty acid esters of sucrose, alkyl ethers of polyhydric alcohols, alkanolamines Nonionic surfactants such as fatty acid amides and polyoxyalkylene alkyl ethers; cetyltrimethylammonium salts; Fourth and allyl trimethyl ammonium salt
Cationic surfactants such as quaternary ammonium salts; and anionic surfactants such as polyoxyethylene lauryl sulfate and lauryl sulfate. Among them, polyoxyalkylene alkyl ether and cetyltrimethylammonium salt are preferred. Examples of the water-emulsifying silicone emulsion include BY22-029 and BY22-047 (all manufactured by Dow Corning Toray Silicone Co., Ltd.) and KM
904 (manufactured by Shin-Etsu Silicone Co., Ltd.). In the above emulsion form, it is preferable to use one having a high polymerized dimethylpolysiloxane content of 40 to 60%.

The highly polymerized dimethylpolysiloxane of the component (C) can be used alone or in combination of two or more, and is used in a hair cosmetic in an amount of 0.01 to 10%, particularly 0.1 to 3%.
% Is preferred from the viewpoint of hair smoothness.

The hair cosmetic composition of the present invention has a pH of 3.0 to 6.5.
It is preferable that the pH is 3.0 to 5.5, so that the hair and the scalp are not irritating, and that the protein, the proteolysate and the protein derivative are more adsorbed to the hair, and the hair damage preventing / maintaining effect is more excellent. Is particularly preferred from the viewpoint of obtaining Examples of the pH adjuster include hydrochloric acid and phosphoric acid.

The hair cosmetic composition of the present invention contains, in addition to the above essential components, components used in ordinary cosmetics, such as dimethyl silicone, cyclic silicone, methylphenyl silicone, polyether-modified silicone, and trimethylsiloxysilicic acid. , Glycerides such as castor oil, cocoa oil, mink oil, avocado oil and olive oil; cetyl alcohol, oleyl alcohol, hexadecyl alcohol, lauryl alcohol, stearyl alcohol, isostearyl alcohol, 2 Higher alcohols such as octyldodecanol; polyhydric alcohols such as propylene glycol, polypropylene glycol and glycerin; isopropyl myristate, hexyl laurate, cetyl lactate;
Esters such as propylene glycol monostearate, oleyl oleate, hexadecyl 2-ethylhexanoate, octyldodecyl myristate; higher alcohols such as polyoxyethylene ethyl ether, polyoxypropylene cetyl ether, polyoxyethylene polyoxypropylene stearyl ether Propylene oxide ethylene oxide adducts; Cationic surfactants such as dialkyldimethylammonium chloride, distearyldimethylammonium chloride, lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride; polyvinylpyrrolidone, vinyl acetate, acid Acrylic and amphoteric acrylic and other high molecular compounds; other fragrances, dyes, ultraviolet absorbers,
Preservatives, antioxidants and the like can be appropriately compounded as long as the effects of the present invention are not impaired.

The hair cosmetic of the present invention can be produced according to a usual method, and may be, for example, a hair blow, a hair spray, a hair foam, a styling lotion, a hair gel, a hair mist, or the like.

[0018]

Industrial Applicability The hair cosmetic composition of the present invention gives gloss, smoothness and excellent conditioning effects to hair, and can maintain those effects for a long time.

[0019]

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

Examples 1 to 3 and Comparative Examples 1 to 4 Hair cosmetics (hair blows) having the compositions shown in Tables 1 to 3 were produced by a conventional method, and when they were used, gloss, feel, and hair damage preventing effects were obtained. Was evaluated. The results are shown in Tables 1 to 3.

(Evaluation method) (1) Gloss: 3 g of a sample was applied to the left and right sides of the head hair, and the shape was adjusted with a comb. The same evaluation was performed 24 hours and 48 hours after the application. ：: There is gloss compared to the control. Δ: Poor gloss compared to control. ×: There is no gloss.

(2) Feeling (moist feeling, smooth feeling, smoothness): each hair cosmetic is sprayed on a hair bundle of 18 cm in length, 5 cm in width, and 20 g in weight, and after natural drying, hair cosmetic is applied. The comparison with the hair bundle without the control (control) was sensory evaluated by a panel of specialized women according to the following criteria. ：: Very good as compared with the control. ：: slightly better than control. Δ: equivalent to control. X: worse than control.

(3) Hair damage preventing effect: 1,000 hair
A hair bundle composed of a book was prepared, each hair cosmetic was applied, and the number of split hair breaks generated when brushing was performed 5,000 times was counted and ranked according to the following evaluation. ：: 20 or less. ：: 21 to 50 pieces. Δ: 51 to 100 pieces. X: 101 or more.

[0024]

[Table 1]

[0025]

[Table 2]

[0026]

[Table 3]

As is clear from Tables 1 to 3, the hair cosmetics containing two or more kinds of α-hydroxycarboxylic acids as the component (A) are more effective than the hair cosmetics containing only one kind of α-hydroxycarboxylic acid. Was particularly excellent in the feel and the effect of preventing damage.

Example 4 An aerosol spray having the composition shown in Table 4 was produced by a conventional method, and evaluated according to the same criteria as in Example 1.

[0029]

[Table 4]

Example 5 A foam having the composition shown in Table 5 was produced by a conventional method, and evaluated according to the same criteria as in Example 1.

[0031]

[Table 5]

Claims (10)

[Claims] 1. The following components (A), (B) and (C)
(A) two or more kinds of α-hydroxycarboxylic acids, (B) one or two or more kinds selected from proteins, protein degradation products and protein derivatives, (C) average polymerization degree n = 800 to 20,000
A hair cosmetic comprising one or more highly polymerized dimethylpolysiloxanes. 2. The hair cosmetic according to claim 1, wherein the component (A) contains two or more selected from citric acid, lactic acid, glycolic acid and tartaric acid. 3. The hair cosmetic according to claim 1, wherein the component (A) is extracted from a natural product. 4. The hair cosmetic according to claim 3, wherein the natural product is a fruit. 5. The hair cosmetic according to claim 1, wherein the component (B) is an animal protein derivative. 6. The hair cosmetic according to claim 5, wherein the animal protein derivative is a collagen hydrolyzate or a keratin hydrolyzate. 7. The hair cosmetic according to claim 6, wherein the collagen hydrolyzate is water-soluble collagen. 8. The hair cosmetic according to claim 1, wherein the high polymerization dimethylpolysiloxane (C) has an average degree of polymerization of 1,000 to 5,000. 9. The amount of (A) 0.0 in the hair cosmetic composition
1 to 5% by weight, (B) 0.0001 to 5% by weight, (C)
9. The method according to claim 1, wherein the content is 0.01 to 10% by weight.
The hair cosmetic according to the above item. 10. The method according to any one of claims 1 to 9, wherein the amount of the α-hydroxycarboxylic acid most frequently blended in the component (A) is 90% by weight or less based on the total amount of the component (A). Hair cosmetics.