JPH08188520A - Hair dye composition - Google Patents

Abstract

PURPOSE: To obtain the subject composition excellent in dyeing ability, capable of uniformly dyeing the hair in a short time, hard to decolor by its excellent color fastness, and impairing no hair touch feeling after dyeing finish, by combining an acid dye, 2-hydroxybenzyl alcohol and an acid followed by adjusting its pH to acidic side. CONSTITUTION: This hair dye composition contains a combination of pref. 0.1-3wt.% of an acid dye, pref. 1-15wt.% of 2-hydrobenzyl alcohol, and an acid, and whose pH is adjusted to 2-6 (pref. 2-4). The acid dye is e.g. a tar coloring matter for cosmetic use such a Black No.401. The 2-hydroxybenzyl alcohol acts as a hair dyeing promoter. The acid is e.g. citric acid, glycolic acid, succinic acid, acetic acid, hydrochloric acid, phosphoric acid, sulfuric acid.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a hair dye composition,
More specifically, the present invention relates to a hair dye composition which is excellent in dyeability, can be uniformly dyed in a short time, is excellent in dyeing fastness, is resistant to discoloration, and does not impair the texture of dyed hair.

[0002]

2. Description of the Related Art Conventionally, oxidative hair dyes using an oxidative dye and an oxidant have been generally used for dyeing hair, but the oxidative hair dye peroxidizes the oxidative dye under alkaline conditions. Since the hair is dyed by reacting it with an oxidizing agent such as hydrogen, it may cause hair damage or primary irritation to the scalp and skin depending on the usage. On the other hand, as a hair dye having a mild action on hair and scalp, an acidic hair dye of a type that dyes hair with an acid dye has been developed. In general,
This acidic hair dye is blended with an organic solvent as a hair dyeing accelerator in order to enhance the effect of the acid dye penetrating into the hair, but conventionally, benzyl alcohol has been widely used.
However, when benzyl alcohol is used, the dyeability (dyeing power) of the hair dye is not sufficient, and it is not satisfactory as a hair dye accelerator. Therefore, research into alternative hair coloring accelerators is under way, and lower alkylene carbonate or pyrrolidone derivatives (Japanese Patent Publication No.
8-23911), cyclohexanol, furfuryl alcohol, butyl cellosolve (Japanese Patent Publication No. 55-1).
2407) and the like have been proposed.

[0003]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention In an acidic hair dye using an acid dye, by blending a hair dye accelerating agent which gives excellent dyeability and dye fastness, it is possible to dye uniformly in a short time, It is possible to obtain a hair dye composition that does not easily discolor. However, the hair dye using the substance described in the above patent publication is not yet satisfactory in dyeability and dye fastness, and a hair dye composition using a hair dye accelerator having a more excellent effect. Was desired.

[0004]

In view of such circumstances, the inventors of the present invention have conducted intensive studies to overcome the above-mentioned drawbacks, and as a result, combined an acid dye, 2-hydroxybenzyl alcohol and an acid, and By setting it to be in the range of 2 to 6, the dyeing property is excellent, and uniform dyeing is possible in a short time, the dyeing fastness is excellent, the color is not easily faded, and the texture of the dyed hair is not impaired. It was found that a hair composition was obtained, and the present invention was completed based on this finding.

That is, the present invention provides (A) an acid dye,
A hair dye composition comprising (B) 2-hydroxybenzyl alcohol and (C) acid and having a pH of 2 to 6.

The component (A) acid dye used in the present invention is not particularly limited as long as it is an acid dye that can be used in cosmetics.
01, purple 401, blue 1, blue 2 and blue 20
No. 2, Blue No. 203, Blue No. 205, Green No. 3, Green 2
01, green 204, green 205, green 401,
Green No. 402, Yellow No. 4, Yellow No. 5, Yellow No. 202 (1) and (2), Yellow No. 203, Yellow No. 402, Yellow No. 403 (1), Yellow No. 406, Yellow No. 407, Bra Color No. 201, Daidai No. 205, Daidai No. 207
No., Daidai No. 402, Red No. 2, Red No. 3, Red 1
02, red 104 (1), red 105 (1), red 106, red 201, red 227,
Red 230 (1), Red (2), Red 231, Red 232, Red 401, Red 502, Red 503
No. 504, Red No. 504, Red No. 506 and the like.

In the present invention, these acid dyes can be used alone or in admixture of two or more, and the blending amount thereof is 0.01 to 5% by weight (hereinafter, simply indicated by%) in the entire composition. Is preferable, and 0.1 to 3% is more preferable.

The 2-hydroxybenzyl alcohol as the component (B) used in the present invention is also known as saligenin or salicyl alcohol, and enhances the effect of the acid dye as the component (A) to penetrate into the hair to promote hair dyeing. It works as an agent.

The content of 2-hydroxybenzyl alcohol in the present invention is preferably 0.1 to 30%, and more preferably 1 to 15% in the total composition.

The pH of the hair dye composition of the present invention is in the range of 2 to 6, more preferably 2 to 4, and the acid as the component (C) is added for pH adjustment. When the pH is less than 2, dyeing on the scalp and hands becomes remarkable, and too low pH may adversely affect the scalp and hair. If the pH exceeds 6, the dyeability of hair will deteriorate.

As the acid as the component (C), a wide variety of common organic acids or inorganic acids can be used. For example, citric acid, glycolic acid, succinic acid, acetic acid, oxalic acid, tartaric acid, lactic acid, malic acid, fumaric acid. , Levulinic acid, butyric acid, valeric acid,
Examples thereof include organic acids such as maleic acid and mandelic acid, and inorganic acids such as hydrochloric acid, phosphoric acid, sulfuric acid and nitric acid. It is also possible to provide a buffering function in the system by combining the organic acid or the like with an alkali metal salt or ammonium salt thereof. The amount of these acids to be blended is an amount necessary for adjusting the pH of the hair dye composition of the present invention to 2 to 6, more preferably 2 to 4.

Further, the hair dye composition of the present invention contains, in addition to the above-mentioned components, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, xanthan gum in a quantitative and qualitative range according to the purpose without impairing the effects of the present invention. Thickeners such as cationized cellulose, cationized starch, cationized guar gum, vinylpyrrolidone N, N
-Dimethylaminoethyl methacrylic acid copolymer Diethyl sulfate, cationic polymer such as diallyl quaternary ammonium salt polymer, silicone oil, highly polymerized silicone, cyclic silicone, polyether modified silicone, amino modified silicone and other silicone derivatives, Polyvinylpyrrolidone, nonionic polymers such as polyvinyl alcohol, anionic polymers, nonionic surfactants, ionic surfactants, higher fatty acids, higher alcohols, polyhydric alcohols,
It is possible to mix lower alcohols, straight chain or branched chain esters, hydrocarbons, fats and oils, propellants, etc.,
Further, other components usually added to cosmetics such as a fragrance, an antiseptic, an ultraviolet absorber, an antioxidant, a bactericide, and a beauty ingredient can be added.

The hair dye composition of the present invention may be used in various forms such as liquid, emulsion, cream, gel, mousse, mist and powder depending on the combination with other components and the mechanism of the container. Can be carried out. Further, the hair dye composition of the present invention may be further blended with a conditioning component or the like to form a hair rinse type hair dye (coloring hair rinse), or in combination with a shampoo base to form a coloring shampoo, or as a hair pack base. It can be applied to various product systems, such as a combination of coloring hair packs.

In order to dye hair using the hair dye composition of the present invention, for example, the hair dye composition of the present invention is applied to hair at room temperature, and the hair is allowed to stand for about 10 to 30 minutes. Therefore, the hair may be washed and dried.

[0015]

EXAMPLES The present invention will be further described with reference to the following examples. These do not limit the present invention in any way.

Examples 1 to 3 and Comparative Examples 1 to 3 Hair Dyes The hair dyes shown in Table 1 were prepared and subjected to a dyeing test using a bundle of human hair mixed with white hair to give a dyeing property, a dyeing fastness, The texture of the finished hair was evaluated. The results are also shown in Table 1.

[0017]

[Table 1]

(Production Method) A. Ingredients (1)-(4) and (7), (8) are mixed. B. The pH of A is adjusted to 3 with components (5) and (6). C. B is filled into a container to obtain a product.

Dyeing test (Evaluation method) Each of the samples of Examples 1 to 3 and Comparative Examples 1 to 3 was applied to a hair bundle of human hair mixed with white hair, allowed to stand at 25 ° C for 30 minutes, and then washed with an ordinary shampoo. And dried.
Repeat this dyeing procedure twice, then for each sample
The <1> dyeability, <2> dyeing fastness, <3> texture of the finished hair were evaluated according to the following evaluation criteria (a), (b) and (c). <1> Dyeability (how to dye) The degree of dyeing of the white hair in the human hair bundle was visually observed. Evaluation criteria (a) ◎: All white hair is dyed cleanly ○: Gray hair is considerably dyed △: White hair is slightly colored ×: Almost no dyeing <2> Dyeing fastness (color fading after dyeing) Difficulty) It was immersed in a 10% shampoo solution for 2 days, and the degree of color fading was observed. Evaluation Criteria (b) ◎: Color does not fade ○: Almost no color fades △: Color fades a little ×: Color fades <3> Texture of finished hair Evaluation criteria (c) ◎: considerably better than before dyeing ○: No change from before dyeing ~ slightly better △: slightly worse than before dyeing ×: worse than before dyeing

As is clear from the results shown in Table 1, the hair dye composition of the present invention exhibits extremely excellent effects in dyeability and dye fastness as compared with those in Comparative Examples 1 to 3. It is an excellent product that does not impair the texture of dyed hair.

Example 4 Black Hair Dye A black hair dye was prepared by the following formulation and production method. (Prescription) (Components) (wt%) (1) Black No. 401 0.9 (2) Purple No. 401 0.5 (3) 2-hydroxybenzyl alcohol 10.0 (4) Malic acid Appropriate amount (5) Malic acid Sodium amount (6) Hydroxyethyl cellulose 0.5 (7) Perfume amount (8) Purified water Remaining amount

(Production Method) A. Components (1)-(3) and (6)-(8) are mixed. B. The pH of A is adjusted to 3 with components (4) and (5). C. B is filled into a container to obtain a product.

Using the black-colored hair dye obtained as described above, a usage test was conducted on a panel having hair mixed with white hair. As a result, this product showed good dyeability, did not easily discolor, and was dyed. It had an excellent quality without impairing the texture of the hair.

Example 5 Brown Hair Dye A brown hair dye was prepared according to the following formulation and production method. (Prescription) (Component) (% by weight) (1) Black No. 401 0.4 (2) Purple No. 401 0.1 (3) Orange No. 205 0.3 (4) 2-hydroxybenzyl alcohol 5.0 (5 ) Citric acid Appropriate amount (6) Sodium citrate Appropriate amount (7) Hydroxyethyl cellulose 1.0 (8) Cationized cellulose (Note 1) 0.3 (9) Perfume Appropriate amount (10) Purified water Remaining amount Note 1: Polymer JR400 ( Made by Union Carbide)

(Production Method) A. Components (1)-(4) and (7)-(10) are mixed. B. The pH of A is adjusted to 3 with components (5) and (6). C. B is filled into a container to obtain a product.

Using the brown-colored hair dye obtained as described above, a usage test was carried out on a panel having hair with white hair. As a result, the product showed good dyeability and was resistant to discoloration. It had an excellent quality in that the texture of dyed hair was improved.

[0027]

As described in detail above, the hair dye composition of the present invention is excellent in dyeability, capable of uniform dyeing in a short time, excellent in dyeing fastness and less likely to cause discoloration, and It has an effect of not impairing the texture of the dyed hair, and has excellent quality as a hair dye composition.

Continuation of the front page (72) Inventor Yuriko Sato 48-18 Sakaemachi, Kita-ku, Tokyo Kose Research Institute Co., Ltd.

Claims (1)

[Claims] 1. A solution containing (A) an acidic dye, (B) 2-hydroxybenzyl alcohol and (C) acid, and having a pH of 2 to
6. A hair dye composition, which is 6.