JP2001294521A - Dye removing agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a dye removing agent capable of efficiently removing an acid hair dye from the hair without damaging the hair and without loading the hair. SOLUTION: This dye removing agent comprises the following components (A), (B), (C), (D) and (E): (A) 0.05-10 wt.% of a cationic surfactant represented by the following formula (1) [wherein, at least one of R1, R2, R3 and R4 denotes a straight-chain or branched chain 20-36C alkyl group or 20-36C hydroxyalkyl group or benzyl group; the balance denotes a 1-3C alkyl group or a 1-3C hydroxyalkyl group; and X denotes a halogen atom or a 1-2C alkylsulfate group], (B) 0.1-40 wt.% of one or more kinds of organic solvents selected from an N-alkylpyrrolidone, a lower alkylene carbonate and an aromatic alcohol, (C) 0.1-50 wt.% of a lower alcohol, (D) 0.01-10 wt.% of an alkali component and (E) 0.1-20 wt.% of a thickener.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a destaining agent for removing an acidic hair dye from hair.

[0002]

2. Description of the Related Art Conventionally, there has been known a method of using a bleaching agent to remove a hair dye from hair. However, the bleaching agent not only damages the hair, but also has a drawback of decomposing melanin pigment to lighten the color of the hair. Further, a destaining agent containing a sulfite to enhance the removing effect (Japanese Patent Application Laid-Open No. 4-356413) is also known, but a sufficient removing effect cannot be obtained and hair is damaged.

[0003]

A composition containing a cationic surfactant, an organic solvent and an alkali component as a composition that is hard to damage the hair (JP-A-11-302130)
And a composition containing an alkali agent, a cationic surfactant, an aromatic alcohol and a polyoxyethylene alkyl ether (JP-A-11-335243) have been proposed. However, although they consider that the hair is not damaged, they do not consider the magnitude of the burden on the skin when the composition is in contact with the skin for a long time. However, the situation where the composition keeps in contact with the skin for a long time, such as when the composition is accidentally attached to the forehead during treatment, or the composition drips on the scalp during application or standing, etc. Happens. Therefore, a composition that does not damage not only the hair but also the skin is an important factor as a destaining agent. In addition, if the composition is gentle on the skin, it can also be used as an agent (stain remover) for removing the hair dye attached to the skin.

An object of the present invention is not only to prevent damage to the hair but also to be gentle on the skin, and to be less irritating even if it is in contact with the scalp or hand skin for a long time or remains, and to remove acid hair dye efficiently. To provide a dye.

[0005]

Means for Solving the Problems The present inventors have studied a system containing a solvent and an alkali component, and found that some cationic surfactants used in hair cosmetics such as treatments impose a burden on the skin. If a combination of a cationic surfactant having an alkyl chain with a specific number of carbon atoms, a specific solvent, an alkali component and a thickener is used, the hair will not be damaged, and The present inventors have found that a destaining agent capable of efficiently removing an acidic hair dye can be obtained at the same time without imposing a burden.

That is, the present invention provides the following component (A):
(B), (C), (D) and (E): (A) The following equation (1)

[0007]

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[Wherein, at least one of R ¹ , R ² , R ³ and R ⁴ represents a linear or branched alkyl group or hydroxyalkyl group having 20 to 36 carbon atoms, or a benzyl group; X represents an alkyl group or a hydroxyalkyl group having 1 to 3 carbon atoms, and X represents a halogen atom or an alkyl sulfate group having 1 to 2 carbon atoms. 0.05 to 10% by weight of a cationic surfactant represented by the formula: (B) 0.1 to 40% by weight of at least one organic solvent selected from N-alkylpyrrolidone, lower alkylene carbonate and aromatic alcohol %, (C) 0.1 to 50% by weight of a lower alcohol, (D) 0.01 to 10% by weight of an alkali component, and (E) 0.1 to 20% by weight of a thickener. Things.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Component (A) used in the present invention
Examples of the on-surfactant include C₂₀-C ₃₆Alkyl
Trimethylammonium salts, especially negative for skin
Behenyltrimethylammonium chloride in terms of the effect of reducing the burden
And behenyltrimethylammonium bromide.

The cationic surfactant of the component (A) comprises 1
Or more species, and from the viewpoint of the destaining effect and the effect of reducing the burden on the skin, 0.05 to 10% by weight in the total composition.
(Hereinafter simply referred to as%), particularly 0.1 to 5%.
%.

The organic solvent of the component (B) used in the present invention includes:
It is selected from N-alkylpyrrolidone, lower alkylene carbonate and aromatic alcohol. Among them, N-alkylpyrrolidone includes, for example, N-alkylpyrrolidone.
Methylpyrrolidone, N-ethylpyrrolidone and the like; lower alkylene carbonates such as ethylene carbonate and propylene carbonate; aromatic alcohols such as benzyl alcohol, benzyloxyethanol and β-phenylethyl alcohol.

As the component (B), N-methylpyrrolidone, benzyl alcohol and benzyloxyethanol are preferred, and benzyl alcohol and benzyloxyethanol are particularly preferred.

One or more organic solvents of component (B) can be used, and 0.1 to 40%, preferably 1 to 3%, of the total composition.
It is preferable to contain 0%, and more preferably 5 to 20%, since a more excellent destaining effect can be obtained.

As the lower alcohol of the component (C) used in the present invention, those having 2 to 6 carbon atoms are preferable. Specifically, monohydric alcohols such as ethanol, isopropanol, n-propanol and n-butanol and ethylene Examples include polyhydric alcohols such as glycol, propylene glycol, isoprene glycol, hexylene glycol, 1,3-butylene glycol, glycerin, and diglycerin.

As the component (C), ethanol, isopropanol and 1,3-butylene glycol are particularly preferred. It is preferable to use ethanol and 1,3-butylene glycol in combination when the water-soluble polymer is used as the thickener of the component (E) to disperse the water-soluble polymer in the composition. Component (C) is preferably contained in the entire composition in an amount of 0.1 to 50%, particularly 5 to 30%, from the viewpoint of the destaining effect.

The alkaline component of component (D) used in the present invention includes strong ammonia water, monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, 2-amino-2-methyl- Examples include alkali metal hydroxides such as 1-propanol, sodium carbonate, sodium hydrogen carbonate, sodium hydroxide and potassium hydroxide, and fatty acid salts such as sodium oleate, sodium stearate and triethanolamine stearate.

As the component (D), triethanolamine and monoethanolamine are particularly preferred from the viewpoints of the destaining effect and the effect of reducing the burden on the skin. As the component (D), one or more kinds can be used.
In particular, when the content is 0.1 to 5%, more preferably 0.5 to 2.5%, a high hair dye removing effect is realized, and at the same time, the burden on the skin is reduced, which is preferable.

In the present invention, the component (E) improves the operability, enables destaining of only a part of the hair such as a thin streak, and reduces the possibility of attaching to an unnecessary part such as the scalp. The effect of not only preventing the composition from entering the eyes and dropping into the forehead and ears, but also reducing the burden on the skin by combining the component (A) with a specific cationic surfactant. Having. As the component (E), a water-soluble polymer, particularly a nonionic water-soluble polymer such as hydroxyethylcellulose and hydroxypropylmethylcellulose, and a cationic water-soluble polymer such as cationized cellulose are preferable.

The component (E) may be used in combination of two or more kinds, and from the viewpoint of operability and effect of reducing the burden on the skin,
It is preferable to contain 0.1 to 20%, particularly 0.5 to 10%, and more preferably 0.8 to 5% in the whole composition.

The destaining agent of the present invention further includes nonionic surfactants and amphoteric surfactants; oils such as paraffin oil, lanolin, higher alcohols and silicone oils; disinfectants, preservatives, fragrances and the like. Can be appropriately compounded according to the conditions.

The destaining agent of the present invention can be produced according to a usual method, and its pH is from 8 to 12, especially from 9 to 11.
Is preferred from the viewpoint of the destaining effect.

Further, the dosage form of the destaining agent of the present invention includes emulsion, cream, gel, paste, aerosol,
Aerosol foams and the like are mentioned, and particularly, emulsions, creams, gels, or pastes are preferable because of excellent usability.

To use the destaining agent of the present invention, for example, an appropriate amount is applied to hair dyed with an acidic hair dye,
After leaving it for 3 to 30 minutes, it may be washed away.

[0024]

EFFECT OF THE INVENTION The destaining agent of the present invention is capable of efficiently removing acidic hair dye from hair without damaging the hair and placing a burden on the skin, and at the same time decolorizing black hair. Nor.

[0025]

Next, the present invention will be further described with reference to examples.

Example 1 A destaining agent having the composition shown in Table 1 was prepared by a conventional method, and the effect of removing the acidic hair dye, the decolorization of black hair, and the damage to hair were evaluated. The results are shown in Table 1.

(Evaluation method) (1) Effect of removing acidic hair colorant: A hair cosmetic (1 g of gray human hair) dyed with a commercially available acid hair dye is applied to hair cosmetics 1
g is evenly applied and left at 40 ° C. for 15 minutes. Thereafter, the hair tresses were washed and the removal effect was evaluated according to the following criteria. ：: The color is well removed. Gray hair is conspicuous. Δ: The color has fallen, but still stands out. Gray hair is somewhat noticeable. X: Almost no color has fallen. Gray hair is inconspicuous.

(2) Hair damage: hair bundle (black human hair 20)
The operation of uniformly applying 20 g of the destaining agent to g), leaving it at 40 ° C. for 15 minutes, and then washing the hair bundle is repeated three times. 20
Names of evaluators evaluated the feel of the hair, and the results were shown according to the following criteria. ：: 60% or more evaluated that the feeling was equal to or higher than that of untreated hair. X: Less than 60% evaluated that the feel was worse than untreated hair.

[0029]

[Table 1]

(3) Low burden on the skin 24 decolorizing agents diluted 10 times with water were applied to the back of 31 adults.
The skin reaction was evaluated three times, immediately after removal of the patch for 24 hours, 24 hours and 48 hours after the patch was removed, based on the following criteria. 4: blisters 3: papules 2: erythema with edema 1: clear erythema 0: none 31 persons were evaluated three times each, and the average value of the scores out of 4 was calculated. As a result, the average value of the product 2 of the present invention was 0.61, and the ratio of behenyltrimethylammonium chloride of the product 2 of the present invention to cetyltrimethylammonium chloride was 0.06.

(4) Easiness of dripping Next, when the same destaining agent was applied to hair, the ratio of dripping to parts other than hair (scalp, forehead, etc.) was calculated. That is, 1 g of a destaining agent is applied per 1 g of hair to a wig (the head of a doll in which hair is embedded) and left for 15 minutes in a state where moisture is not removed. Thereafter, the hair on which the agent was placed was cut off, the weight was measured, and the dripping rate (%) was calculated.

As a result, the ratio of the sagging was 1
-3 are less than 1%, and the sagging ratios when no thickener (hydroxyethylcellulose, hydroxypropylmethylcellulose, cationized cellulose) is contained are 8%, 9%,
7%.

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 4C083 AB031 AC101 AC102 AC122 AC151 AC172 AC541 AC542 AC691 AC692 AC841 AC851 AD132 AD282 CC35 DD27 EE03 EE07 4H057 AA01 CA12 CA29 CA35 CA90 CB05 CB13 CB18 CB34 CB48 CB50 DA90

Claims (1)

[Claims] 1. The following components (A), (B), (C),
(D) and (E): (A) The following formula (1) [In the formula, at least one of R ¹ , R ² , R ³ and R ⁴ represents a linear or branched alkyl group or hydroxyalkyl group having 20 to 36 carbon atoms, or a benzyl group; And X represents a halogen atom or an alkyl sulfate group having 1 to 2 carbon atoms. 0.05 to 10% by weight of a cationic surfactant represented by the formula: (B) 0.1 to 40% by weight of at least one organic solvent selected from N-alkylpyrrolidone, lower alkylene carbonate and aromatic alcohol %, (C) 0.1 to 50% by weight of a lower alcohol, (D) 0.01 to 10% by weight of an alkali component, and (E) 0.1 to 20% by weight of a thickener.