JP3492738B2 - Hair 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 hair cosmetic composition which retains a proper amount of water, imparts flexibility and smoothness to hair, and has a long-lasting softening effect.

[0002]

2. Description of the Related Art Hair moisture is important from the viewpoint of hair protection, and various attempts have been made to impart appropriate moisture to hair. For example, hair treatments, hair rinses and other hair cosmetics are blended with pyrrolidonecarboxylate, polyhydric alcohols such as glycerin, hyaluronic acid, protein derivatives, moisturizing ingredients such as urea, higher alcohols, petrolatum, animal and vegetable oils and fats. Oils such as the above are mixed, but if the oils try to increase the water content in the hair, inconveniences such as feeling of use may occur. Further, moisturizers have also been studied, and for example, JP-A-55-149369 discloses that a moisturizer composition of proline and 2-pyrrolidone-5-carboxylic acid exhibits an excellent moisturizing effect,
Further, JP-A-56-71020 discloses that 2-pyrrolidone-5-carboxylic acid basic amino acid can be added to cosmetics for the purpose of enhancing the moisturizing effect. However, originally, the moisturizing component has a poor affinity for hair, and the effect can hardly be expected particularly in a preparation which is rinsed off and used. Therefore, there has been a demand for the development of a hair cosmetic composition that retains an appropriate amount of water and gives a smooth and excellent feel even when washed off. On the other hand, a method for swelling the hair with an organic solvent and penetrating a hair modifying component into the inside of the hair to improve the inside of the hair has been developed. For example, JP-A-4-134015 discloses benzyloxyethanol and a cationic agent. A method of combining amphoteric polymers to maintain a conditioning effect is disclosed.
However, these methods do not allow the protective component to penetrate deep into the hair and do not act on the inside of the hair.
R> Softening effect and smoothing effect, but the sustainability of the effect is not fully satisfied.

[0003]

In view of such circumstances, the present invention further permeates the moisturizing agent to the deep part of the hair to give appropriate moisture to the hair, to give the hair flexibility and smoothness,
In addition, the present invention provides a hair cosmetic having a long-lasting softening effect.

[0004]

Means for Solving the Problems As a result of diligent studies, the present inventor has conducted one or more kinds selected from the group consisting of (A) pyrrolidonecarboxylic acid, acidic amino acids and organic acids (B) having 3 to 3 carbon atoms. A hair cosmetic composition comprising one or more selected from alcohols of 8 or organic solvents which are aromatic alcohols.

In this hair cosmetic composition, the hair softening ingredient penetrates into the hair more sufficiently and quickly, so that the hair can be imparted with extremely excellent softness and smoothness, and the softness lasts for a long time. In addition, the addition of proline or hydroxyproline further improves the flexibility of hair, and the blending of one or more kinds selected from lanolin, liquid lanolin, and lanolin derivatives as an oil component enhances the durability of hair flexibility. It was discovered that they were able to complete this research.

That is, the present invention is one or more selected from the group consisting of (A) pyrrolidonecarboxylic acid, acidic amino acid and organic acid (B) an organic compound which is an alcohol or aromatic alcohol having 3 to 8 carbon atoms. The present invention relates to a hair cosmetic composition which contains one or more selected from solvents and imparts extremely excellent softness and smoothness to hair, and has long-lasting softness.

The present invention will be described in detail below. The component (A) that can be used in the present invention is pyrrolidonecarboxylic acid, acidic amino acid and organic acid, and examples of the organic acid include lactic acid, citric acid, glycolic acid, succinic acid, fumaric acid and malic acid. All of these are known components, are commercially available, and can be blended alone or in any combination of two or more. Of the component (A), pyrrolidonecarboxylic acid and lactic acid are particularly preferable. The blending amount of these components is preferably 0.5 to 10% by weight, and particularly preferably 1.0 to 5.0% by weight based on the total amount of the cosmetic.
If the amount is less than 0.5% by weight, the hair cannot be sufficiently softened, and if it exceeds 10% by weight, the feeling of use such as stickiness is impaired, which is not preferable.

The number of carbon atoms that can be used in the present invention is 3 to 8
The organic solvents which are alcohols or aromatic alcohols are, for example, isopropyl alcohol, n-propyl alcohol, isobutyl alcohol, n-butyl alcohol, 1-pentanol, 2-pentanol, 3-pentanol, hexanol, benzyl alcohol. , 2-phenylethanol, cinnamic alcohol, phenylpropanol, phenoxyethanol, benzyloxyethanol, tolyl alcohol, α-methylbenzyl alcohol, dimethylbenzylcarbinol and the like, among which 1-pentanol, 2-pentanol, 3- Pentanol, hexanol, benzyl alcohol, 2-phenylethanol, cinnamic alcohol, phenylpropanol, α-methylbenzyl alcohol, phenoxyethanol, dimethylbenzyl Carbinol is preferred. These organic solvents may be used alone or in any combination of two or more, and the compounding amount thereof is preferably 0.1 to 50% by weight, particularly preferably 0.5 to 10% by weight based on the total amount of the cosmetic. . If the blending amount is less than 0.1% by weight, the permeation of the hair softening component is insufficient, and if the blending amount exceeds 50% by weight, no further improvement in the effect is observed.

In the present invention, proline or hydroxyproline can be added in order to further improve the softness of hair. These proline and hydroxyproline are commercially available, and the compounding amount thereof is not particularly limited, but it is particularly 0.1 to 5.0% by weight based on the total amount of the cosmetics, and the flexibility of the hair is remarkable. Can be improved.

Further, in the present invention, lanolin, liquid lanolin and lanolin derivatives can be blended for the purpose of further maintaining the softness of hair. Lanolin, liquid lanolin, and lanolin derivatives are not particularly limited,
Lanolin, liquid lanolin, and lanolin fatty acid cholesteryl are particularly preferable. Further, the blending amount thereof is not limited, but is preferably 0.5 to 10.0% by weight based on the total amount of the cosmetic.

In the present invention, the pH of the hair cosmetic composition is not limited, but particularly when the pH is in the range of 1 to 6, excellent flexibility and smoothness can be imparted to the hair, and the flexibility is long-term. Therefore, a pH adjusting agent can be used if necessary. As the pH adjuster, inorganic acids such as phosphoric acid and hydrochloric acid, organic and inorganic alkaline agents can be used.

The form of the hair cosmetic composition of the present invention is not particularly limited, and may be in the form of hair rinse, emulsion, blowing agent, hair treatment, hair mousse, hair essence, etc., and depending on the form of use, shampoo. It can be used either after or before shampooing or without washing. In the hair cosmetic composition of the present invention, within the range that does not impair the effects of the present invention, an appropriately known surfactant,
Oils, colorants, fragrances and the like can be added.

[0013]

EXAMPLES Next, the present invention will be described in more detail by showing examples. Needless to say, the present invention is not limited to the examples. Unless otherwise specified, "%" indicates% by weight. Examples 1 to 4 and Comparative Examples 1 to 5 shown in Table 1 were prepared by a conventional method and evaluated. The evaluation method is as follows. (Evaluation method) 1. Permeability evaluation After immersing 1 g of a hair bundle in Examples and Comparative Examples at 40 ° C.,
Rinse with water and dry at room temperature. This hair cross section was dyed with a 0.1% aqueous solution of orange II, which is an anionic dye, and the degree of dyeing was observed under a microscope to find the radius (r) of the hair cross section.
The permeation degree to the was evaluated by the following criteria. 5: Complete penetration to the center 4: Penetration up to 3r / 4 3: Penetration up to 2r / 4 2: Penetration up to r / 4 1: Surface adhesion only

2. A flexible hair bundle of hair (8 g) was treated in Examples and Comparative Examples, and then sensory evaluated by 5 professional panelists (female in their 20s). The judgment criteria are shown. ⊚: 4 or more people recognize flexibility. ○: 3 people recognize flexibility △: 2 people recognize flexibility ×: 1 person or less recognizes flexibility

3. Persistence of flexibility 2. The hair bundle used in 1. was washed once with 10% SLS and repeatedly washed 5 times, and then sensory evaluated by 5 professional panelists (female in their 20s). The judgment criteria are shown. ⊚: 4 or more people recognize flexibility. ○: 3 people recognize flexibility △: 2 people recognize flexibility ×: 1 person or less recognizes flexibility

4. Smoothness Evaluation A hair bundle (8 g) was treated in Examples and Comparative Examples, and then sensory-evaluated by 5 professional panelists (female in their 20s). ⊚: 4 or more persons recognized smoothness. ◯: 3 people recognized smoothness. Δ: Two people recognized smoothness. ×: 1 person or less recognized smoothness.

5. Comprehensive Evaluation A comprehensive evaluation was made based on the evaluation results of the above four items. The judgment criteria are shown. ◯: Permeability evaluation is 4 or more, and hair flexibility evaluation, softness durability evaluation and smoothness evaluation satisfy the conditions of ⊚ or ○, respectively. ×: Other than ○

[0018]

[Table 1]

From the results shown in Table 1, the examples are superior to the comparative examples in permeation into the hair, imparted flexibility and smoothness to the hair, and have excellent durability of flexibility. It was recognized that

[0020] Example 6 Emulsion     Ingredient amount (%)        (A)     Pyrrolidonecarboxylic acid 2.0     Lanolin fatty acid cholesteryl 1.0     2-phenylethanol 3.0     1,3-butylene glycol 1.0     POE (5) cetyl ether 1.2     Xanthan gum 0.2     Water level        (B)     Liquid paraffin 2.0         Total 100.0    The heated (A) and (B) are mixed and cooled.

[0021] Example 7 Hairblow     Ingredient amount (%)        (A)     Proline 1.0     Benzyl alcohol 0.5     POE (5) hydrogenated castor oil 0.5     Ethanol 10.0     Citric acid 1.0     Water level         Total 100.0     Mix and dissolve the ingredients.

[0022] Example 8 Hair treatment     Ingredient amount (%)       (A)     Stearyl trimethyl ammonium chloride 3.0     Citric acid 2.0     Dimethylbenzyl carbinol 3.0     Cetyl alcohol 3.0     Lanolin 1.0     Dimethyl polysiloxane (20cs) 3.0       (B)     Propylene glycol 5.0     Preservative trace amount     Water level       (C)     Perfume 0.1        Total 100.0   Mix (A) and (B) and add (C) while cooling.

Example 9 Hair Mousse Ingredient Blending Amount (%) (A) Glutamic Acid 2.0 2-Phenylethanol 3.0 Polyether Modified Silicone 0.5 Water Remaining (B) Ethanol 5.0 Dibutylhydroxytoluene 0.01 Fragrance 0.1 Total 100.0 90 parts of a stock solution prepared by mixing (A) and (B) and 10 parts of a propellant (liquefied petroleum gas) are filled in an aerosol container.

[0024]

According to the present invention, pyrrolidonecarboxylic acid,
By combining a hair softening component selected from acidic amino acids and organic acids with an organic solvent selected from alcohols having 3 to 6 carbon atoms or aromatic alcohol, the hair softening component penetrates deeply into the hair and is excellent in hair. It is possible to provide a hair cosmetic composition which imparts excellent softness and smoothness, and has long-lasting softness. Further, when combined with proline or hydroxyproline, the softness of hair is further improved, and lanolin, liquid lanolin or lanolin derivative is also provided. When combined with, it is possible to provide a hair cosmetic that further improves the durability of the flexibility of the hair.

Continuation of the front page (56) References JP-A-49-1734 (JP, A) JP-A-4-338316 (JP, A) JP-A-4-282308 (JP, A) JP-A-5-43430 (JP , A) JP 5-58846 (JP, A) JP 5-201836 (JP, A) JP 5-201837 (JP, A) JP 5-221840 (JP, A) JP 4-29919 (JP, A) JP 60-166606 (JP, A) JP 2-121906 (JP, A) JP 55-149369 (JP, A) JP 63-96106 (JP, A) Japanese Patent Publication 48-37823 (JP, B1) Japanese Patent Publication 48-17362 (JP, B1) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61K ^7/ 00-7/50

Claims (2)

(57) [Claims] 1. An organic solvent selected from the group consisting of (A) pyrrolidonecarboxylic acid, glutamic acid, and lactic acid, or one or more selected from the group consisting of (B) 2-phenylethanol , benzyl alcohol, and isopropyl alcohol. Hair cosmetics containing one or more kinds and proline or hydroxyproline. 2. An organic solvent selected from the group consisting of (A) pyrrolidonecarboxylic acid, glutamic acid, and lactic acid, or one or more selected from the group consisting of (B) 2-phenylethanol , benzyl alcohol, and isopropyl alcohol. Hair cosmetics containing one or more selected from the group consisting of lanolin, liquid lanolin and lanolin derivatives.