JP2872390B2 - Hair dye - Google Patents

Description

Description: Object of the Invention [Industrial Application Field] The present invention relates to a hair dye for dyeing hair and the like, and more particularly, to a hair dye containing glutathione and hardly causing damage to the hair and discomfort of the scalp. About.

[Related Art] Conventionally, as a hair dye for hair and the like, a permanent hair dye such as an oxidative hair dye or a semi-permanent hair dye such as a color lotion has been used. Some of these hair dyes contain ammonia and the like and, in an alkaline state, swell cuticles on the surface of the hair and allow the dye to penetrate inside the hair and dye the hair.

[Problems to be Solved by the Invention] However, keratin, which is a protein constituting a cuticle on the surface of hair, is easily decomposed by alkali. For this reason, there has been a problem that the use of the alkaline hair coloring agent damages the hair and impairs the gloss of the hair.

In addition, there is a drawback in that the dye or ammonia in the hair dye irritates the scalp, causing allergy to some persons and causing discomfort to the subject.

An object of the present invention is to solve the above-mentioned problems and to provide a hair dye that is less likely to cause damage to hair and discomfort to the scalp by blending a predetermined compounding agent.

Configuration of the Invention [Means and Actions for Solving the Problems] The present invention relates to an oxidative hair dye comprising a first agent mainly containing an oxidation dye intermediate and a second agent mainly containing an oxidizing agent, The agent is characterized in that it contains glutathione.

The amount of glutathione is 0.0001 based on the total amount of hair dye.
~ 5% by weight is preferred. Particularly preferably, 0.001 to 3
% By weight. If it is less than 0.0001% by weight, the effect of reducing hair damage and scalp discomfort is reduced. 5% by weight
No further effect can be expected even if it is blended beyond. These amounts are based on the total amount of the hair dye. For example, in the case of a hair dye consisting of two agents, such as an oxidative hair dye, the mixing amount is based on the total amount after mixing.

The hair dye targeted in the present invention is an oxidative hair dye. Examples of the dosage form include various forms such as liquid, cream, gel, paste, powder, solid, aerosol, and aerosol foam. Hereinafter, the oxidative hair dye will be described.

Oxidative hair dyes often used as permanent hair dyes comprise a first agent mainly containing an oxidation dye intermediate and a second agent mainly containing an oxidant. As oxidation dye intermediates, usually, phenylenediamines, aminophenols, toluylenediamines, aminonitrophenols, diphenylamines, diaminophenylamines, N-phenylphenylenediamines, diaminopyridines and the like and salts thereof Or one or more of these. The compounding amount of these oxidation dye intermediates is about 0.01 to 10% by weight based on the total weight of the first agent. In addition, as a coupler, resorcinol,
Pyrogallol, catechol, metaaminophenol, metaphenylenediamine and the like can be blended. In addition, in addition to the above substances, "Hair Coloring Material Standards" (revised 3rd edition,
Published in May 1985, published by Japan Hair Color Industry Association and Hair Dye Society). Further, a surfactant such as polyoxyethylene alkyl ether or polyoxyethylene alkylamine fatty acid amide, a humectant such as glycerin or propylene glycol,
Oily components such as lanolin, squalane or liquid paraffin, stabilizers such as sulfite or ascorbic acid, thickeners such as carboxymethylcellulose, alkali agents such as ammonia or alkanolamine, higher alcohols and fragrances are appropriately mixed as necessary. I do. On the other hand, as the second agent, an oxidizing agent such as hydrogen peroxide or urea peroxide is contained, and stabilizers such as phenacetin and EDTA, surfactants, fats and oils, higher alcohols, acids, pH adjusters and fragrances are used. And the like can be appropriately compounded as needed. When this hair dye is used, the first and second agents are mixed and applied to the hair immediately before the hair dyeing treatment.

It is thought that the reason for reducing the damage to the hair and the discomfort of the scalp by blending glutatitone with the hair dye is as follows. That is, glutatin causes a peptide bond with the protein constituting the hair,
Attaches to hair surface. Thereby, the cuticle on the surface of the hair is protected, and damage to the hair by the hair dye can be reduced. The reason why glutathione can reduce discomfort on the scalp has not been elucidated yet.

EXAMPLES Hereinafter, preferred examples of the present invention will be described.

(First Example) Formulations of Examples and Comparative Examples of a liquid two-part oxidative hair dye according to the present invention are shown below. The difference between the example and the comparative example is whether or not it contains glutathione. The following components were prepared by a general compounding method.

Example 1st agent p-phenylenediamine 1.0% by weight Propylene glycol 10.0% by weight EDTA-Na 0.3% by weight Sodium sulfite 0.5% by weight Glutathione (manufactured by Oriental Yeast Co., Ltd.) 0.1% by weight Ammonia pH 10.0 Amount Purification Water Remaining agent 2nd agent Hydrogen peroxide 6.0% by weight Purified water Remaining example Comparative example 1st agent p-phenylenediamine 1.0% by weight Propylene glycol 10.0% by weight EDTA-Na 0.3% by weight Sodium sulfite 0.5% by weight Ammonia pH 10.0 Refining Remaining water Second agent Hydrogen peroxide 6.0% by weight Purified water Remaining Comparative test First and second hair dyes of Examples and Comparative Examples of the above composition
The figure was mixed 1: 1 and the hair of five panelists was divided into left and right halves at the top of the head, and the Example and Comparative Example were applied to either the left or right. After a lapse of 20 minutes at room temperature, the hair of each panel was thoroughly washed with warm water of about 40 ° C. and dried. With respect to the hair of each panelist who has completed such a hair dyeing treatment, regarding the damage, dyeing and irritation of the hair, the following evaluation criteria
Examples and comparative examples were comparatively evaluated. Table 1 shows the results.

Evaluation Criteria (1) Damage to Hair The surface of the hair was observed with an electron microscope (3000 times magnification) to evaluate the degree of cuticle damage.

：: The example has less damage than the comparative example.

Δ: Damage of the example and the comparative example is almost the same.

X: The example is more damaged than the comparative example.

(2) Dyeing ○: Natural dyeing of the example is more glossy than that of the comparative example.

Δ: Dyeing of the example and the comparative example is almost the same.

X: The example is less glossy than the comparative example and unnatural dyeing.

(3) Stimulation ：: The stimulus to the scalp is weaker in the example than in the comparative example.

Δ: Stimulation to the scalp of the example and the comparative example was comparable.

X: The example is more irritating to the scalp than the comparative example.

Thus, it can be seen that the example has less damage to the hair and can obtain a glossy natural dyeing as compared with the comparative example. Also, there is little irritation to the scalp and little discomfort.

As described above, according to the present embodiment, it is possible to provide an oxidative hair dye that is less likely to cause hair damage and scalp discomfort.

(Second Example) Formulations of Examples and Comparative Examples of a creamy two-part oxidative hair dye according to the present invention are shown below. These components were prepared by a general compounding method.

Example 1st agent Paraphenylenediamine 2.0% by weight Resorcinol 1.0% by weight Polyoxyethylene alkyl ether 3.0% by weight Cetostearyl alcohol 8.0% by weight Liquid paraffin 2.0% by weight Glutathione (manufactured by Oriental Yeast Co., Ltd.) 0.2% by weight Perfume Ammonia pH 9.5 Purified water balance 2nd agent Hydrogen peroxide 15.0% by weight Edetic acid 0.5% by weight Cetanol 2.0% by weight Alkyl sulfate 0.5% by weight Phenacetin 0.1% by weight Purified water balance Comparative example 1st agent Paraphenylenediamine 2.0 % By weight Resorcinol 1.0% by weight Polyoxyethylene alkyl ether 3.0% by weight Cetostearyl alcohol 8.0% by weight Liquid paraffin 2.0% by weight Perfume Appropriate amount Ammonia pH 9.5 Purified water Remaining 2nd agent Hydrogen peroxide 15.0% by weight Edetic acid 0.5% % Cetanol 2.0% by weight Alky Sodium rusulfate 0.5% by weight Phenacetin 0.1% by weight Purified water Remaining comparative test First and second hair dyes of Examples and Comparative Examples of the above composition
The agents were mixed at a ratio of 1: 1 and the hair of the panel was divided into left and right halves at the top of the head, and the Example and Comparative Example were applied to either the left or right. After a lapse of 20 minutes at room temperature, the hair of the panel was thoroughly washed with shampoo and dried. As a result, in the example, the hair was less damaged and glossy dyeing was obtained as compared with the comparative example. In addition, it was found that the example did not feel much irritation to the scalp and had less discomfort than the comparative example.

As described above, according to the present embodiment, it is possible to provide a cream-like oxidative hair dye that is less likely to cause damage to hair and discomfort to the scalp.

(Third Example) Formulations of Examples and Comparative Examples of the gel-type two-part oxidative hair dye according to the present invention will be described below. These components were prepared by a general compounding method.

Example 1st agent Paraphenylenediamine 2.0% by weight Orthoaminophenol 0.5% by weight Resorcin 0.5% by weight Lauryl diethanolamide 10.0% by weight Polyoxyethylene alkylphenyl ether 20.0% by weight Oleic acid 5.0% by weight Polyethylene glycol 20.0% by weight Glutathione (Oriental yeast (Manufactured by Kogyo Co., Ltd.) 0.05% by weight Sodium sulfite 0.5% by weight Perfume Appropriate amount Monoethanolamine pH 9.5 amount Purified water Remaining 2nd agent Hydrogen peroxide 15.0% by weight Amyl paradimethylaminobenzoate 0.5% by weight Edetic acid 0.5 Weight% cetanol 2.0 weight% sodium alkyl sulfate 0.5 weight% phenacetin 0.1 weight% purified water balance comparative example 1st agent paraphenylenediamine 2.0 weight% orthoaminophenol 0.5 weight% resorcin 0.5 weight% lauryl diethanolamide 1 0.0% by weight Polyoxyethylene alkylphenyl ether 20.0% by weight Oleic acid 5.0% by weight Polyethylene glycol 20.0% by weight Sodium sulfite 0.5% by weight Perfume Appropriate amount Monoethanolamine pH 9.5 Purified water Remaining 2nd agent Hydrogen peroxide 15.0% by weight Amyl paradimethylaminobenzoate 0.5% by weight Edetic acid 0.5% by weight Cetanol 2.0% by weight Alkylsulfate 0.5% by weight Phenacetin 0.1% by weight Purified water Remaining Comparative test With the first agent of the hair dyes of Examples of the above composition and Comparative Examples Second
The agents were mixed at a ratio of 1: 1 and the hair of the panel was divided into left and right halves at the top of the head, and the Example and Comparative Example were applied to either the left or right. After a lapse of 20 minutes at room temperature, the hair of the panel was thoroughly washed with shampoo and dried. As a result, in the example, the hair was less damaged and glossy dyeing was obtained as compared with the comparative example. In addition, it was found that the example did not feel much irritation to the scalp and had less discomfort than the comparative example.

As described above, according to the present embodiment, it is possible to provide a gel-like oxidative hair dye that does not easily cause damage to hair and discomfort to the scalp.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments at all, and it is needless to say that the present invention can be implemented in various modes without departing from the gist of the present invention.

Glutathione is one of the peptides present in animals and plants and is usually produced by extracting from yeast. Therefore, in terms of safety, there is no problem even if it is added to the hair dye.

Effect of the Invention Since the hair dye of the present invention contains glutathione, it can be dyed with almost no damage to the hair and little discomfort to the scalp.

Claims (1)

(57) [Claims] 1. An oxidative hair dye comprising a first agent mainly comprising an oxidative dye intermediate and a second agent mainly comprising an oxidant, wherein the first agent comprises glutathione. .