JPH11217319A - Hair dye composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hair dye composition simple to use, excellent in hair dyeing effects and fastness, scarcely damaging hair without using an oxidizing agent and without causing fouling of skin by making the composition include a direct dye and thioglycolic acid therein. SOLUTION: This composition is obtained by including (A) a direct dye (e.g. nitro-p-phenylenediamine) and (B) thioglycolic acid and/or its salt (e.g. ammonium thioglycolate). In the composition, 0.01-10 wt.% of the ingredient A and the ingredient B in an amount of 0.005-2 wt.% expressed in terms of the thioglycolic acid are preferably contained. Furthermore, (C) 0.1-25 wt.% of a solubilizer (e.g. polyethylene glycol), (D) >=0.01 wt.% of a thickening agent comprising an anionic polymer such as gum arabic and (E) 0.01-5 wt.% of a cationic surfactant or a cationic polymer, as necessary, are preferably contained in the composition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-part hair dye composition which is excellent in hair dyeing effect and fastness, and has little hair damage and background stain.

[0002]

2. Description of the Related Art Oxidative hair dyes using an oxidative dye such as paraphenylenediamine have been widely used as hair dyes because of their excellent hair dyeing power and fastness and various color tones. . In recent years, acid hair dyes such as color rinses and hair manicures using an acid dye and a solvent have been widely used.

[0003]

However, oxidative hair dyes are
It is necessary to oxidize the dye to form a color, and a one-component oxidative hair dye that uses oxygen in the air as an oxidizing agent cannot provide sufficient oxidizing power and weakens the hair dyeing power. Is generally used in a mixture with an oxidizing agent. Therefore, there are problems such as damage to hair and irritation to skin due to an oxidizing agent such as hydrogen peroxide.

[0004] In addition, acid hair dyes are used in an acidic region and do not use an oxidizing agent, so that hair damage is relatively light. However, in order to obtain a sufficient hair dyeing effect, a high concentration of a dye is used. When dyeing hair, a complicated heating operation is required. Further, there is a disadvantage that when the drug adheres to the scalp or skin, it is easily stained, and the stain remains for a considerable period of time. In addition, when a cationic surfactant or a cationized polymer is blended in order to improve the texture of the finish, the hair dyeing power is remarkably reduced to form a complex with the acidic dye, and it has been difficult to commercialize the composition. . Further, a two-part hair dye comprising a first agent mainly containing a nitro dye and an alkaline agent and a second agent mainly containing hydrogen peroxide is also known, but the hair dyeing power is weak and fast. It is not popular because of its poor nature.

[0005] As described above, a one-part hair dye composition which is excellent in hair dyeing effect and fastness, and has little hair damage and background stain has not yet been obtained. Was desired.

[0006]

The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, by combining a direct dye with thioglycolic acid and / or a salt thereof, it is possible to use a simple method without using an oxidizing agent. The present inventors have found that the present invention has excellent hair dyeing effects and fastness, has little hair damage, and does not cause soiling on the skin.

That is, the present invention provides a one-part hair dye composition which can be easily used, has an excellent hair dyeing effect and fastness, and has little hair damage and background stain.

Hereinafter, the present invention will be described in detail.

As the direct dye used in the hair dye composition of the present invention, known dyes such as tar dyes and natural dyes can be used, and one or more of them may be used in combination. Among them, nitro dyes, azo dyes, nitroso dyes, triphenylmethane dyes, xanthene dyes, quinoline dyes,
Anthraquinone dyes or indigo dyes are preferred because of obtaining good hair dyeing effects, and nitro dyes are particularly preferable from the viewpoint of hair dyeing effects. Further, these dyes are preferably incorporated in the hair dye composition in an amount of 0.01 to 10% by weight, more preferably 0.05 to 5% by weight. 0.01% by weight
When the amount is less than the above, the hair dyeing effect is insufficient. On the contrary, when the amount is more than 10% by weight, not only the hair dyeing power is not improved, but also the dyeing on the scalp and fingers becomes remarkable, which is not desirable.

Specific examples of direct dyes include nitroparaphenylenediamine, paranitroorthophenylenediamine, paranitrometaphenylenediamine, 2-amino-
4-nitrophenol, 2-amino-5-nitrophenol, picramic acid, N1, N4, N4-tris (2-
(Hydroxyethyl) -2-nitroparaphenylenediamine, 4-[(2-nitrophenyl) amino] phenol, N1- (2-hydroxyethyl) -2-nitroparaphenylenediamine, 2,2 ′-[(4-amino -3-
Nitrophenyl) imino] bisethanol, N- (2-
(Hydroxyethyl) -2-nitroaniline, 2-[[2
-(2-hydroxyethoxy) -4-nitrophenyl]
Amino] ethanol, N1- (2-hydroxyethyl)
-4-Nitroorthophenylenediamine, salts thereof, and dyes (hereinafter, abbreviated as legal pigments) specified by "Ministerial Ordinance for Specifying Tar Dyes that can be Used in Pharmaceuticals, etc." (Notified in 1971, Ministry of Health and Welfare) Nitro dyes such as yellow 403 (1), the same as legal dyes, red 2
No., Red No. 102, Red No. 201, Red No. 225, Red No. 227, Red No. 501, Red No. 502, Red No. 503
No., Red 504, Red 505, Red 506, Orange 205, Orange 402, Orange 40
No. 3, Yellow No. 4, Yellow No. 5, Yellow No. 402, Yellow No. 404
Azo dyes such as No. 405, Yellow 405, Yellow 406, Yellow 407, Brown 201 and Black 401;
Nitroso dyes such as No. 01, blue No. 1 and blue 202
No., Blue No. 203, Blue No. 205, Green No. 3, Green No. 20
No. 5, green No. 402, etc., and also red No. 3, red No. 104 (1), red No. 105 (1), red No. 106, red No. 218, red No. 230 (1), Red No. 230 (2), Red No. 231, Red 2
Xanthene dyes such as No. 32, Red No. 401, Orange No. 201, Orange No. 207, Yellow 201, Yellow 202 (1), and Yellow 202 (2);
Quinoline dyes such as No. 03 and Yellow No. 204, 1-amino-
4-methylaminoanthraquinone, 1,4-diaminoanthraquinone, legal dyes blue 403, green 201,
Anthraquinone dyes such as Green No. 202, Purple No. 201 and Purple No. 401, and indigo dyes such as Blue No. 2 and Blue No. 201 are also exemplified.

It is considered that the mechanism of action of the present invention is to reductively soften the hair with the mercapto compound, to enhance the penetration of the dye into the hair, and to promote the dyeing. Examples of the mercapto compound include thioglycolic acids, cysteines, and thiourea, and thioglycolic acids are the most effective. Thioglycolic acid and salts thereof used in the hair dye composition of the present invention include thioglycolic acid, ammonium thioglycolate, monoethanolamine thioglycolate, sodium thioglycolate,
And calcium thioglycolate. The amount is 0.005 to 2% by weight as thioglycolic acid,
More preferably, the content is 0.01 to 1% by weight. When the concentration of thioglycolic acid is less than 0.005% by weight, a sufficient dye-promoting effect cannot be obtained. When the concentration is more than 2% by weight, the dye-promoting effect is sufficient, but the keratin protein in the hair is excessive. In the case of permanent hair, it is not preferable because it causes wave down.

Since the hair dye composition of the present invention may contain a direct dye which is hardly soluble in water, a solubilizing agent is appropriately contained. Since a solvent or a surfactant is used as the solubilizing agent, the hair dyeing effect may be inhibited in some cases. In the present invention, when polyethylene glycol, polyoxyethylene polyoxypropylene glycol, polyoxyethylene castor oil, polyoxyethylene hardened castor oil, and the like are blended, the hair dyeing effect is less inhibited, and hair dyeing is also performed depending on the type of dye. It has been found that the dye can be solubilized while promoting the effect. The mixing amount is 0.1 to 25 in the hair dye composition of the present invention.
It is preferable to mix by weight%. More preferably, 1 to 1
0% by weight. When the amount is less than 0.1% by weight, the ability to solubilize the dye is too low to obtain a sufficient hair dyeing power, and when the amount is more than 25% by weight, the possibility of inhibiting the hair dyeing effect increases. .

The hair dye composition of the present invention can be in the form of a liquid, an emulsion, a cream, a gel, a paste, or an aerosol foam. However, since the present invention is a one-part hair dye composition, dripping,
An appropriate viscosity is required to prevent scattering. When thickening the drug using a thickener, the type of the thickener is not particularly limited, but an anionic polymer is most preferable in view of the stability of the viscous composition.

As the anionic polymer, gum arabic, xanthan gum, tragacanth gum, carrageenan,
And sodium carboxymethylcellulose, carboxyvinyl polymer, polyacrylic acid and salts thereof, and the like.

The compounding amount is 0.01% by weight or more, and can be adjusted to an appropriate viscosity.

When a cationic surfactant or a cationized polymer is blended with the hair dye composition of the present invention, the smoothness of fingers and the feeling of finish during hair washing, especially during rinsing, are extremely improved. It was also found that the change in hair tone after hair dyeing was reduced. Examples of the cationic surfactant include alkyltrimethylammonium chloride, lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, stearyltrimethylammonium chloride, stearyltrimethylammonium bromide, lauryltrimethylammonium bromide, and dialkyldimethylammonium chloride. Alkyl ammonium salts and alkyl benzyl ammonium salts such as dicetyl dimethyl ammonium chloride, distearyl dimethyl ammonium chloride, dicoyl dimethyl ammonium chloride, myristyl dimethyl benzyl ammonium chloride, and stearyl dimethyl benzyl ammonium chloride; Does the chain contain an amino or ammonium group Or a cationized cellulose derivative, a cationic starch, a cationized guar gum derivative, a cationized hydrolyzed keratin, a cationized dextran, a diallyl quaternary ammonium salt / acrylamide copolymer and a quaternary, which contain at least dimethyldiallylammonium halide as a constituent unit. Polyvinyl pyrrolidone derivative and the like.

The compounding amount is preferably 0.01 to 5% by weight, and if it is less than 0.01% by weight, a good hair texture cannot be obtained, and a sufficient effect for preventing a change in color tone after hair dyeing is obtained. Can not expect. Even if it exceeds 5% by weight, the effect remains unchanged and is not economical.

Further, the hair dye composition of the present invention may contain conventionally known components as long as the effects of the present invention are not impaired. For example, higher alcohol, liquid paraffin, ester oil, fatty acid, silicone and its derivatives, petrolatum, polyhydric alcohol, ultraviolet absorber,
Preservatives, surfactants, pH adjusters, alkaline agents, fragrances,
And a pearlizing agent.

Further, the hair dye composition of the present invention has a specific p
In the H region, that is, at pH 6 to 11, it shows the best hair dyeing power and fastness. However, it is preferable to adjust the pH to 10 or less in consideration of safety such as irritation to the scalp.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Next, the present invention will be described in detail with reference to examples.
The present invention is not limited to the description of the following embodiment.

[0021]

Examples Example 1% by weight Blue No. 1 0.5 Ammonium thioglycolate 0.5 Monoethanolamine 2.0 Carboxyvinyl polymer 1.5 Purified water qs

Example 2 wt% Nitroparaphenylenediamine 1.5 Monoethanolamine thioglycolate 1.0 Polyethylene glycol 1500 5.0 Monoethanolamine 1.0 Xanthan gum 2.0 Hydroxyethylcellulose hydroxypropyl Trimethylammonium chloride ether 5 Appropriate amount of purified water

Example 3 Weight% 1,4-diaminoanthraquinone 1.5 Monoethanolamine thioglycolate 1.0 Polyoxyethylene hydrogenated castor oil 8.0 Monoethanolamine 1.0 Sodium polyacrylate 2.0 Purified water Appropriate amount

Example 4 Weight% Red No. 213 1.0 Ammonium thioglycolate 1.0 Polyethylene glycol 400 10.0 28% aqueous ammonia 3.0 Olive oil 5.0 Polyoxyethylene (15) cetyl ether 5.0 Poly Sodium acrylate 0.5 Stearyl trimethyl ammonium chloride 3.0 Stearyl alcohol 10.0 Purified water qs

Comparative Example 1 Weight% Blue No. 1 0.5 Monoethanolamine 2.0 Carboxyvinyl polymer 1.5 Purified water qs

Comparative Example 2 wt% Blue No. 1 0.5 Benzyl alcohol 5.0 Ethyl alcohol 10.0 Citric acid 0.5 Carboxyvinyl polymer 3.0 Purified water qs

Comparative Example 3 Weight% Red No. 213 1.0 Polyethylene glycol 400 10.0 Benzyl alcohol 5.0 Citric acid 0.5 Olive oil 5.0 Polyoxyethylene (15) cetyl ether 5.0 Stearyl alcohol 10.0 Purified water qs

Comparative Example 4 (Two-part formula) (First part) Weight% Nitroparaphenylenediamine 1.5 Ammonium thioglycolate 1.0 Polyethylene glycol 400 10.0 28% Aqueous ammonia 3.0 Olive oil 5.0 Poly Oxyethylene (15) cetyl ether 5.0 Stearyl trimethylammonium chloride 3.0 Stearyl alcohol 10.0 Purified water qs (second agent) wt% Polyoxyethylene (4) nonylphenyl ether 5.0 Polyoxyethylene (9 ) Nonylphenyl ether 5.0 Hydrogen peroxide (35%) 17.0 Cetanol 3.0 Purified water qs When using, mix and apply the same amount of 1 agent and 2 agents.

The above Examples 1 to 4 and Comparative Examples 1 to
4 was prepared, and a hair dyeing test, a fastness test, a skin dyeing test, and an evaluation of hair damage were performed. The results are shown in Table 1.

(1) Hair dyeing test A goat hair bundle (white; about 2 g in weight) was washed with 5 g of a 5% by weight aqueous solution of sodium lauryl sulfate, and thoroughly rinsed with warm water. Then, excess water was wiped off, and Examples 1 to 4
After applying 2 g of the hair dye composition of Comparative Examples 1 to 3,
It was left in a thermostat (37 ° C.) for 30 minutes. In Comparative Example 4, the same amount of one agent and two agents was mixed, and hair was dyed under the same conditions. Next, the hair after washing with water, drying and dyeing was evaluated according to the following criteria. ◎: Extremely good hair dyeing power (uniform and deeply colored, white is not conspicuous) ○: Good hair dyeing power (uniformly colored, white is not conspicuous) △: Insufficient hair dyeing power (uneven dyeing) ×: Extremely poor hair dyeing power (uneven dyeing and white appearance)

(2) Fastness test One day after the test, the hair bundle dyed in the hair dyeing test was immersed in a 1% by weight aqueous solution of sodium lauryl sulfate at 50 ° C. for 20 minutes.
Thereafter, it was thoroughly rinsed with warm water and dried. The degree of fading at this time was evaluated in comparison with the hair dye tress before the fastness test. ◎: little discoloration, very good discoloration ○: little discoloration, good discoloration △: slightly discoloration, slightly discolored ×: large discoloration, poor discoloration

(3) Skin Dyeing Test 0.5 g of the previously prepared hair dye composition (a mixture of the same amount of 1 agent and 2 agents for Comparative Example 4) was applied to the inner part of the human forearm.
After applying to the size of a coin, leave for 30 minutes. Then, after washing with water, with absorbent cotton impregnated with a soap solution,
The dyed part was lightly rubbed about 20 times, washed again with water, and evaluated by comparing the degree of color dyed on the skin. ◎: Very good with little residual color on the skin ○: Slightly dyed on the skin, but good without noticeable △: Dyed on the skin, slightly inferior in color remaining ×: Dyed on the skin, color Remaining noticeable

(4) Damage to Hair The surface of the hair before and after the hair dyeing treatment was examined under an electron microscope (magnification: 3000).
), And the degree of damage to the hair dermal was evaluated according to the following criteria, and the most frequent evaluation was represented. …: No damage is observed in hair dyeing. …: Damage such as slight uplift, cracks, and peeling was observed in the hair skin. Δ: slight damage such as bulges, cracks, and peeling was observed on the hair skin. ×: Severe ridges, cracks, peeling, and other damages were observed on the fur.

[0034]

[Table 1]

[0035]

EFFECT OF THE INVENTION The hair dye composition of the present invention is free from irritation by an oxidizing agent, has excellent hair dyeing effects and fastness, and has hair damage,
Provided is a hair dye composition with less scalp and skin stains.

Claims (6)

[Claims] 1. A one-part hair dye composition comprising at least one direct dye and thioglycolic acid and / or a salt thereof. 2. The hair dye composition according to claim 1, wherein the direct dye comprises a nitro dye. 3. The hair dye according to claim 1, wherein the direct dye is selected from the group consisting of azo dyes, nitroso dyes, triphenylmethane dyes, xanthene dyes, quinoline dyes, anthraquinone dyes and indigo dyes. Composition. 4. The method according to claim 1, further comprising one or more selected from the group consisting of polyethylene glycol, polyoxyethylene polyoxypropylene glycol, polyoxyethylene castor oil and polyoxyethylene hydrogenated castor oil. A hair dye composition according to any one of claims 1 to 3. 5. The hair dye composition according to claim 1, which comprises one or more anionic polymers. 6. The hair dye composition according to claim 1, comprising one or more selected from the group consisting of a cationic surfactant and a cationized polymer.