JP5756258B2 - Two-component hair dye - Google Patents

Description

  The present invention relates to a two-component hair dye.

  Conventionally, liquid or cream-like hair bleaching agents and hair coloring agents have been widely used, but it is difficult for those who are not accustomed to apply these to hair evenly. The viscosity of the mixture applied to the hair is adjusted to be as high as 1000 to 10,000 mPa · s to prevent sagging when left standing, and it is difficult to spread the agent uniformly, and the agent is fully applied to the root of the hair. This is because it is difficult to spread. Furthermore, skills such as blocking and a matching mirror are required for applying the root portion and the back of the hair, and a lot of time is required.

  On the other hand, what discharges the liquid mixture of a two-component hair decoloring agent or a two-component hair dye from a non-aerosol-type former container in the foam form is proposed (patent document 1). This hair bleaching agent or hair coloring agent can be applied to the hair evenly by discharging the mixed solution of the first agent and the second agent from the non-aerosol-type former container in the form of foam, and color unevenness does not occur in the finish. In particular, it is useful for eliminating the color difference between the newly born area and the already-dyed area, and is supported by a wide range of customers regardless of gender or age group.

  However, the above-mentioned types of hair bleaching agents and hair dyes are “single-use type” in which the first agent and the second agent are mixed and used all at once due to the nature of the product. Even when the target is short hair, it is often used such that the entire amount in the product is discharged and all the mixed solution is applied. In such a case, the ratio of the mixed solution to the amount of hair (bath ratio) was excessive, and some inconveniences such as dripping during standing after application were observed.

  Therefore, even when used at such a high bath ratio, there has been a demand for a hair bleaching agent and a hair coloring agent in which the applied foam does not spill, spreads to the root, and has good dyeability. Yes.

JP 2004-339216 A

  Therefore, even in the case of use in a high bath ratio such as applying the whole amount to short hair, the present invention does not allow the discharged and applied foam to spill during standing, and to be dyed or decolorized. It is another object of the present invention to provide a good non-aerosol type two-component hair dye.

  The present inventors solved the above-mentioned problems by adding specific amounts of mono long-chain aliphatic group trimethylammonium salt and anionic surfactant in a mixed solution of non-aerosol two-component foam hair dye. I found out that I can do it.

The present invention comprises a first agent containing an alkali agent, a second agent containing hydrogen peroxide, and a non-aerosol foamer container that discharges a mixture of the first agent and the second agent in the form of foam. In the following components (A) and (B)
(A) Mono long chain aliphatic group trimethylammonium salt: 0.02 to 10% by mass
(B) Anionic surfactant: 0.5 to 10% by mass
And a two-component hair dye having a viscosity of 1 to 300 mPa · s at 25 ° C. of the mixed solution.

  Furthermore, the present invention relates to a hair dyeing method in which the liquid mixture of the above two-component hair dye is discharged from a non-aerosol foamer container in the form of foam, the foamed liquid mixture is applied to the hair, and then foamed again on the hair. It is to provide.

  Even if the two-component hair dye of the present invention is used in a high bath ratio such as applying the entire amount to short hair, the discharged and applied foam does not spill during standing, Therefore, the bath ratio can be increased with peace of mind, and the dyeability or decolorization can be further increased.

  In the present invention, the “two-component hair dye” is a concept including both a hair dye containing a dye and a decoloring agent not containing a dye.

[(A): Mono long chain aliphatic group trimethylammonium salt]
The long-chain aliphatic group in the mono long-chain aliphatic group trimethylammonium salt of component (A) may be either a straight chain or branched chain, and may be either an alkyl group or an alkenyl group, but the carbon number is 16-22. Further, 16 to 20, particularly 16 to 18 are preferable, an alkyl group is more preferable, and a straight chain is more preferable. Specifically, the long chain aliphatic group is preferably a cetyl group or a stearyl group. Examples of the counter ion of the ammonium ion of component (A) include halide ions (chloride ions, bromide ions, etc.) and organic anions (methyl sulfate ions, ethyl sulfate ions, saccharin ions, etc.). Ions and bromide ions are preferred.

  The content of component (A) in the mixture of the first agent and the second agent can be used in combination with the anionic surfactant of component (B), even when used at a high bath ratio. From the viewpoint of enhancing the stability of foam and suppressing the dripping, the content is set to 0.02 to 10% by mass, more preferably 0.05 to 5% by mass, and particularly preferably 0.1 to 2% by mass.

[(B): Anionic surfactant]
Examples of the anionic surfactant of component (B) include sulfate anionic surfactants such as alkyl sulfates and alkyl ether sulfates; N-acyl amino acid salts, N-acyl-N-alkyl amino acid salts, amide type Carboxylic acid type anionic surfactants such as N-acyl amino acid salt, ether carboxylate, fatty acid salt, alkyl succinate or alkenyl succinate salt; sulfosuccinate type, isethionate type, taurine salt type, alkylbenzene sulfonic acid Examples thereof include sulfonic acid type anionic surfactants such as salt type, α-olefin sulfonate type and alkane sulfonic acid type; and phosphate ester type anionic surfactants such as alkyl phosphate and alkyl ether phosphate. Among these, a carboxylic acid type and a sulfuric acid ester type are preferable, and a carboxylic acid type is particularly preferable. Among the carboxylic acid anionic surfactants, N-acyl amino acid salts, N-acyl-N-alkyl amino acid salts, and ether carboxylates are preferable. Examples of the amino acid residue of the N-acyl amino acid salt include glutamic acid and aspartic acid, and examples of the amino acid residue of the N-acyl-N-alkyl amino acid salt include glutamic acid, glycine, and β-alanine. The carbon number of the acyl group of the N-acyl amino acid salt and N-acyl-N-alkyl amino acid salt is preferably 10 to 18, more preferably 10 to 16, and further preferably 10 to 14. The carbon number of the alkyl group of the N-acyl-N-alkyl amino acid salt is preferably 10 to 18, more preferably 10 to 16, and further preferably 10 to 14.

  Examples of the ether carboxylates include polyglyceryl alkyl ether acetates and ether acetates represented by the following general formula (1).

R—Z— (CH ₂ CH ₂ O) _m —CH ₂ CO ₂ X (1)

[Wherein, R represents a linear or branched alkyl group or alkenyl group having 7 to 19 carbon atoms, Z represents —O— or —CONH—, and X represents a hydrogen atom, an alkali metal, triethanolamine or Ammonium is shown, m shows the number of 1-20. ]

  In the ether acetate, those having R carbon number of 10-18, more preferably 11-15, m is preferably 3-15, and 6-12 are particularly preferred. Among these, those satisfying both the carbon number of R and the range of m are preferable.

  The content of component (B) in the mixture of the first agent and the second agent can be used in combination with the cationic surfactant of component (A) so that even when used at a high bath ratio, From the viewpoint of enhancing the stability of foam and suppressing the dripping, the content is set to 0.5 to 10% by mass, more preferably 1 to 8% by mass, and particularly preferably 2 to 5% by mass.

  The mass ratio (B) / (A) of component (B) to component (A) increases the stability of the foam on the hair and suppresses dripping more, and the foam is fully distributed to the root. From the viewpoint of making it, it is preferably 1 to 100, more preferably 2 to 50, and particularly preferably 4 to 20.

  In addition, the component (A) and the component (B) are the first from the viewpoint of enhancing the storage stability and being mixed immediately before use, thereby further improving the stability of the foam and enhancing the effect of suppressing dripping. It is preferable to be contained separately in the agent and the second agent. That is, the first agent contains component (B) and the second agent contains component (A), or the first agent contains component (A) and the second agent contains component (B). In particular, the first agent contains the whole amount of the component (B), the second agent contains the whole amount of the component (A), or the first agent contains the whole amount of the component (A). And the aspect that a 2nd agent contains the whole quantity of a component (B) is preferable.

[Alkaline agent]
The first agent contains an alkali agent. Alkaline agents such as ammonia and salts thereof; alkanolamines such as monoethanolamine, isopropanolamine, 2-amino-2-methylpropanol and 2-aminobutanol and salts thereof; alkanediamines such as 1,3-propanediamine and the like Salts: carbonates such as guanidine carbonate, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate and the like. These alkaline agents may be used in combination of two or more, and the content thereof is 0.05 to 0.05 in the mixed solution from the viewpoint of sufficient hair dyeing / bleaching effect and reduction of hair damage and scalp irritation. 15 mass% is preferable, 0.1-10 mass% is further more preferable, and 0.2-5 mass% is especially preferable.

〔hydrogen peroxide〕
The content of hydrogen peroxide in the second agent is preferably 1 to 9% by mass, particularly preferably 3 to 6% by mass. The content of hydrogen peroxide in the mixed solution of the first agent and the second agent is 1 to 6 mass%, 2-5 mass% is especially preferable. The pH of the second agent is preferably 2 to 6, particularly 2.5 to 4 in order to suppress decomposition of hydrogen peroxide.

〔dye〕
When the two-component hair dye of the present invention is a hair bleaching agent, no dye is contained, and when it is a hair dye, the first agent contains an oxidative dye intermediate or a direct dye.

(Oxidized dye intermediate)
As the oxidation dye intermediate, known precursors and couplers usually used in hair dyes can be used. Examples of the precursor include paraphenylenediamine, toluene-2,5-diamine, 2-chloro-paraphenylenediamine, N-methoxyethyl-paraphenylenediamine, N, N-bis (2-hydroxyethyl) -paraphenylenediamine, 2- (2-hydroxyethyl) -paraphenylenediamine, 2,6-dimethyl-paraphenylenediamine, 4,4'-diaminodiphenylamine, 1,3-bis (N- (2-hydroxyethyl) -N- (4 -Aminophenyl) amino) -2-propanol, PEG-3,3,2'-paraphenylenediamine, paraaminophenol, paramethylaminophenol, 3-methyl-4-aminophenol, 2-aminomethyl-4-aminophenol , 2- (2-hydroxyethylaminomethyl) -4-aminophenol, orthoaminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol, 2-amino-5-acetami Phenol, 3,4-diaminobenzoic acid, 5-aminosalicylic acid, 2,4,5,6-tetraaminopyrimidine, 2,5,6-triamino-4-hydroxypyrimidine, 4,5-diamino-1- (4 '-Chlorobenzyl) pyrazole, 4,5-diamino-1-hydroxyethylpyrazole and salts thereof.

  Examples of couplers include metaphenylenediamine, 2,4-diaminophenoxyethanol, 2-amino-4- (2-hydroxyethylamino) anisole, 2,4-diamino-5-methylphenetole, and 2,4-diamino. -5- (2-hydroxyethoxy) toluene, 2,4-dimethoxy-1,3-diaminobenzene, 2,6-bis (2-hydroxyethylamino) toluene, 2,4-diamino-5-fluorotoluene, 1 , 3-Bis (2,4-diaminophenoxy) propane, metaaminophenol, 2-methyl-5-aminophenol, 2-methyl-5- (2-hydroxyethylamino) phenol, 2,4-dichloro-3- Aminophenol, 2-chloro-3-amino-6-methylphenol, 2-methyl-4-chloro-5-aminophenol, N-cyclopentyl-metaaminophenol, 2-methyl-4-methoxy-5- (2- Hydroxyethylamino) phenol, 2-methyl-4-fluoro-5-a Nophenol, resorcin, 2-methylresorcin, 4-chlororesorcin, 1-naphthol, 1,5-dihydroxynaphthalene, 1,7-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, 2-isopropyl-5-methylphenol, 4 -Hydroxyindole, 5-hydroxyindole, 6-hydroxyindole, 7-hydroxyindole, 6-hydroxybenzomorpholine, 3,4-methylenedioxyphenol, 2-bromo-4,5-methylenedioxyphenol, 3,4 -Methylenedioxyaniline, 1- (2-hydroxyethyl) amino-3,4-methylenedioxybenzene, 2,6-dihydroxy-3,4-dimethylpyridine, 2,6-dimethoxy-3,5-diaminopyridine 2,3-diamino-6-methoxypyridine, 2-methylamino-3-amino-6-methoxypyridine, 2-amino-3-hydroxypyridine, 2,6-diaminopyridine and these Salts and the like.

  Two or more precursors and couplers may be used in combination, and the content of each of the precursor and the coupler is preferably 0.01 to 5% by mass, particularly 0.1 to 4% by mass in the mixed solution.

(Direct dye)
Examples of direct dyes include acid dyes, nitro dyes, disperse dyes, and basic dyes. Examples of acid dyes include Blue No. 1, Purple No. 401, Black No. 401, Orange No. 205, Red No. 227, Red No. 106, Yellow No. 203, Acid Orange 3, etc., and nitro dyes include 2-nitro -p-phenylenediamine, 2-amino-6-chloro-4-nitrophenol, 3-nitro-p-hydroxyethylaminophenol, 4-nitro-o-phenylenediamine, 4-amino-3-nitrophenol, 4- Hydroxypropylamino-3-nitrophenol, HC Blue No.2, HC Orange No.1, HC Red No.1, HC Yellow No.2, HC Yellow No.4, HC Yellow No.5, HC Red No.3 N, N-bis- (2-hydroxyethyl) -2-nitro-p-phenylenediamine and the like, and disperse dyes include Disperse Violet 1, Disperse Blue 1, Disperse Black 9 and the like. Basic dyes such as Basic Blue 99 and Basic Kuburaun 16, Basic Brown 17, Basic Red 76, Basic Red 51, Basic Yellow 57, Basic Yellow 87, Basic Orange 31, and the like.

  Two or more direct dyes may be used in combination, or may be used in combination with an oxidation dye intermediate. Moreover, the content is 0.001-5 mass% in a liquid mixture, Especially 0.01-3 mass% is preferable.

[Other surfactants]
The two-component hair dye of the present invention may further contain a surfactant other than component (A) and component (B). Examples of such surfactants include nonionic surfactants, amphoteric surfactants, semipolar surfactants, and cationic surfactants other than component (A).

  Nonionic surfactants include alkyl polyglucosides, polyoxyalkylene alkyl ethers, alkyl glyceryl ethers and the like. As the alkyl polyglucoside, those having 8 to 18, more preferably 8 to 14, particularly 9 to 11 carbon atoms of the alkyl group are preferable, and those in which the alkyl group is linear are preferable. The average degree of condensation of glucoside is 1 to 5, particularly 1 to 2. As the polyoxyalkylene alkyl ether, those in which the alkyl group has 10 to 22 carbon atoms, particularly 12 to 18 carbon atoms, are preferred, and those in which the alkyl group is linear are preferred. Further, polyoxyethylene alkyl ether is more preferable, and those having an average addition mole number of oxyethylene group of 1 to 40, particularly 4 to 30 are preferable. As the alkyl glyceryl ether, those in which the alkyl group has 8 to 18 carbon atoms, particularly 8 to 12 carbon atoms are preferable, and those in which the alkyl group is branched are preferable.

  Amphoteric surfactants include carbobetaines, amidebetaines, sulfobetaines, hydroxysulfobetaines, amidesulfobetaines, phosphobetaines, imidazo having 8 to 24 carbon atoms, alkyl groups, alkenyl groups or acyl groups. Examples thereof include linium-based surfactants, and among them, carbobetaine-based surfactants and sulfobetaine-based surfactants are preferable. Preferred amphoteric surfactants include lauric acid amidopropyl betaine, coconut oil fatty acid amidopropyl betaine, lauryldimethylaminoacetic acid betaine, lauryl hydroxysulfobetaine and the like.

  Examples of the semipolar surfactant include alkylamine oxide and alkylamidoamine oxide.

  Examples of the cationic surfactant other than the component (A) include dilong chain aliphatic group dimethylammonium salts such as dialkyldimethylammonium salts.

  The content of the surfactant other than the above components (A) and (B) in the mixed solution of the first agent and the second agent further enhances the foaming property and the stability of the foam on the hair. From the viewpoint of increasing, it is preferably 0.1 to 8% by mass, more preferably 0.5 to 6% by mass, and particularly preferably 1 to 5% by mass.

[Higher alcohol]
In the two-component hair dye of the present invention, in order to improve foam, and to improve the effect of suppressing dripping while left after applying the two-component hair dye of the present invention to the hair, Furthermore, a higher alcohol can be contained.

  As the higher alcohol, those having an alkyl group or alkenyl group having 12 to 22 carbon atoms, more preferably 14 to 18 carbon atoms are preferred, and those having an alkyl group, particularly a linear alkyl group are preferred. For example, myristyl alcohol, cetyl alcohol, stearyl alcohol, aralkyl alcohol, behenyl alcohol, oleyl alcohol and the like can be mentioned. Especially, it is preferable to use together 2 or 3 types among myristyl alcohol, cetyl alcohol, and stearyl alcohol.

  The content of the higher alcohol in the mixed solution of the first agent and the second agent is 0.01 to 1.5% by mass from the viewpoint of enhancing foaming, fine and soft foam quality, and the effect of suppressing dripping during standing. Further, 0.1 to 1% by mass, further 0.4 to 0.9% by mass, particularly 0.6 to 0.8% by mass is preferable. Further, the content in the first agent when the higher alcohol is contained in the first agent is preferably 0.01 to 2% by mass, more preferably 0.1 to 1.5% by mass, and particularly preferably 0.2 to 1% by mass. When the higher alcohol is contained in the second agent, the content in the second agent is preferably 0.01 to 2% by mass, more preferably 0.1 to 1.5% by mass, and particularly preferably 0.5 to 1% by mass.

[Polymer or copolymer of diallyl quaternary ammonium salt]
In the two-component hair dye of the present invention, a polymer or copolymer of diallyl quaternary ammonium salt is further added from the viewpoint of maintaining an appropriate foam residue after being applied to the hair and enhancing the effect of easily confirming the applied location. A coalescence can be included. Specific examples of the polymer or copolymer of diallyl quaternary ammonium salt include dimethyldiallylammonium chloride polymer (polyquaternium-6, such as Marquat 100; Nalco), dimethyldiallylammonium chloride / acrylic acid copolymer (polyquaternium- 22, for example, Marquat 280, 295; Nalco), dimethyldiallylammonium chloride / acrylamide copolymer (polyquaternium-7, such as Marquat 550; Nalco), dimethyldiallylammonium chloride / acrylic acid / acrylamide copolymer (polyquaternium- 39, for example, Marquat Plus 3330, 3331; Nalco). Of these, dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride / acrylic acid copolymer are preferable.

  The content of the diallyl quaternary ammonium salt polymer or copolymer in the mixed solution of the first agent and the second agent has an effect of maintaining an appropriate foam residue after being applied to the hair and making it easier to confirm the place where it was applied. From the viewpoint of increasing the content, 0.01 to 3% by mass, more preferably 0.1 to 2% by mass, and particularly preferably 0.3 to 1.5% by mass.

[Non-volatile hydrophilic solvent]
Furthermore, it is preferable to contain a non-volatile hydrophilic solvent in the first agent or the second agent. This reduces the irritation to the scalp caused by the application of foam of the liquid mixture to the hair and the evaporation of moisture from the liquid mixture to concentrate irritating components such as hydrogen peroxide while it is left standing. be able to. As the non-volatile hydrophilic solvent, those having no defoaming action such as polyols and lower (1 to 4 carbon atoms) alkyl ethers thereof are preferable. As the polyols, those having 2 to 6 carbon atoms are preferable, and examples thereof include glycerin, diglycerin, propylene glycol, dipropylene glycol, 1,3-butanediol, ethylene glycol, diethylene glycol, isoprene glycol, sorbitol and the like. Examples of the lower alkyl ethers of the polyol include mono-lower alkyl ethers and poly-lower alkyl ethers (for example, di-lower alkyl ethers) of the above-described polyols. Of these, monomethyl ether or monoethyl ether of polyol is preferable, and specific examples include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monomethyl ether, and diethylene glycol monoethyl ether. Two or more of these can be used in combination.

  The content of the non-volatile hydrophilic solvent in the mixture of the first agent and the second agent is 0.1 to 4 mass from the viewpoint of reducing the scalp irritation and improving the foam quality even when the liquid temperature is low. %, More preferably 0.5 to 3% by mass, and further preferably 1 to 2% by mass.

[Other optional ingredients]
The first agent and the second agent use water as a medium, and in addition to the above components, other components that are usually used as cosmetic raw materials can be added. Such optional ingredients include animal and vegetable oils and fats, natural or synthetic polymers, ethers, protein derivatives, hydrolyzed proteins, amino acids, preservatives, chelating agents, stabilizers, antioxidants, plant extracts, Examples include herbal extracts, vitamins, fragrances, and UV absorbers.

[PH]
The pH (25 ° C.) of the two-component hair dye of the present invention is 8 to 12, more preferably 9 to 11, particularly 9 in use (mixing) from the viewpoint of decolorization / hair dyeing effect and skin irritation. ~ 10 is preferred. As the pH adjuster, in addition to the above alkaline agents, inorganic acids such as hydrochloric acid and phosphoric acid, organic acids such as citric acid, glycolic acid and lactic acid, phosphorous such as dipotassium dihydrogen phosphate, disodium monohydrogen phosphate, etc. Examples include acid salts.

〔viscosity〕
The viscosity of the mixed solution of the first agent and the second agent is 1 to 300 mPa · s, preferably 5 to 200 mPa · s, particularly preferably 10 to 100 mPa · s. The viscosity here is 25 ° C., a B-type rotational viscometer, using rotor No. 1, the rotational speed is 60 rpm when the measurement object is 100 mPa · s or less, 30 rpm when 100 to 200 mPa · s, In case of 200mPa · s or more, measure at 12rpm. The measurement is performed in order from the measurement with the largest number of rotations, and the measurement is completed when the measurement can be performed without shaking the display, and the subsequent measurement with the smaller number of rotations is not performed.

  By adjusting the viscosity of the mixed solution of the first agent and the second agent to be in the above range, it is possible to realize a foam volume that is easy to apply, and to prevent dripping after the mixed solution is applied to the hair. In addition to being able to suppress, it becomes easy to squeeze when discharging bubbles with a squeeze foamer or the like. In order to adjust the viscosity of the mixed solution to the above-described range, a water-soluble solvent such as ethanol may be added, or the content and type of surfactants, polyols, higher alcohols, and the like may be appropriately adjusted.

[Gas-liquid mixture ratio]
The gas / liquid mixing ratio of the air and the mixed liquid by the foam discharge means of the former container is preferably 7 to 40 mL / g, more preferably 15 to 30 mL / g from the viewpoint of ease of application of the agent to the hair and ease of application. preferable. In addition, the gas-liquid mixing ratio here is a value measured as follows.

  First, the gas-liquid mixing ratio is determined by measuring the weight and volume of the foam discharged at 25 ° C. Liquid mixture in squeeze foamer container (Daiwa Seisakusho S1 squeeze foamer, volume 210mL, mesh roughness (mesh) is 150 mesh in mixing chamber (150 mesh per inch (25.4mm)), tip 200 mesh) 100g, 20g of foam is discharged into a 1000mL measuring cylinder from the time when the remaining amount is 80g, and the volume of the foam is measured 1 minute after the start of discharge. The gas-liquid mixing ratio (mL / g) is obtained by dividing the volume (mL) of the discharged foam by the weight of 20 g.

[Former container]
In the present invention, the former container is a non-aerosol type container, and is used for mixing the liquid mixture of the first agent and the second agent with air without using a propellant and discharging it in the form of foam. . By using the former container, an effect of preventing scattering of the discharged agent can be obtained. In particular, a non-aerosol type container can manufacture a product at a lower cost than an aerosol type container and does not require a high-pressure gas propellant. Therefore, the product can be handled more safely in distribution.

  As the former container, a known pump former container having a foam discharge means, a squeeze foamer container, an electric frother, a pressure accumulating pump former container or the like can be used. More specifically, for example, food and containers (vol. 35, No. 10, p588 to 593 (1994); vol. 35, No. 11, p624 to 627 (1994); vol. 36, No. 3, p154 ~ 158 (1995)) Pump former E3 type, F2 type (above, Daiwa Steel Co., Ltd.), squeeze foamer (Daiwa Steel Co., Ltd.), electric whisk (Matsushita Electric Works), air spray for Mar (Air Spray International). As the former container used in the two-component hair dye of the present invention, a pump former container and a squeeze foamer container are preferable because they are inexpensive and easy to use.

  A pump former container or a squeeze foamer container has a foam-generating part such as a net, and when the liquid mixture of one agent and two agents is dried and solidified to cause clogging, bubbles are generated at the next discharge. It is preferable to have a thin-walled net because the solidified material can be immediately dissolved by this flow to eliminate clogging. In this case, the mesh of the net is preferably 50 to 280 mesh, more preferably 90 to 250 mesh, and further preferably 130 to 220 mesh. Here, the mesh means the number of eyes per inch. By using a mesh net in this range, creamy foam can be generated. Moreover, as a material of such a mesh, nylon, polyester, etc. can be illustrated preferably.

  The former container used in the two-component hair dye of the present invention is provided with at least one, preferably a plurality of such nets, particularly two in view of economy, foam stability, etc. It is preferable to do.

  In the former container, the parts that come into contact with the contents (the inner wall of the container, the inner wall of the foam discharge means, etc.) are made of a material that does not corrode with alkali and hydrogen peroxide and is permeable to oxygen generated by the decomposition of hydrogen peroxide. It is preferable.

  As the product form of the two-component hair dye of the present invention comprising the first agent, the second agent and the former container, the first agent or the second agent is filled in a container separate from the former container, and both are used at the time of use. The agent may be transferred to the former container and mixed, but one agent is filled into the former container, the other agent is filled into a separate container, and the other agent is transferred into the former container at the time of use. You may make it enter. In this case, the second agent is a gas permeable container, particularly an oxygen permeable material (for example, polyethylene) in order to prevent the pressure in the container from rising due to oxygen generated by the decomposition of hydrogen peroxide. It is preferable to fill a former container consisting of On the other hand, in order to prevent the oxidation of the oxidation dye, the first agent needs to use a container that does not easily transmit oxygen.

〔how to use〕
In order to dye hair (especially hair) using the two-component hair dye of the present invention, it is preferable to comb the hair in advance. This makes it difficult for the hair to be entangled during the refoaming process described later, so there is no possibility that the mixed solution will scatter. Moreover, after combing hair, it is not necessary to perform the blocking operation widely used by application of the hair dye composition, and it is preferable not to perform the blocking operation. Thereby, the operation which applies the hair dye composition mentioned later to hair, and the operation which foams again become easy. Next, the first agent and the second agent of the two-component hair dye of the present invention may be mixed in a former container, and the foamy agent discharged from the container may be directly applied to the hair, It may be applied to the hair using a tool such as a brush. After application, leave for about 3 to 60 minutes, preferably about 5 to 45 minutes, and wash away. Then, after shampooing and rinsing as appropriate, the hair is washed and dried.

  In addition, after applying the mixed liquid of the first agent and the second agent discharged in the form of foam to the hair, the applied foam is foamed again on the hair, so that it drips between being applied to the hair and being washed away. It is possible to further prevent dropping, and to avoid unpainted portions and uneven coating. In order to foam again, gas may be injected, an instrument such as a vibrator or brush may be used, or a finger may be used, but it is more preferable to use a finger. Here, the foaming time may be after the foam has completely disappeared, during the foam disappearance, or before the applied foam changes. Or it may be in the middle of application, even after it completes application to the whole range which wants to apply foam. Foaming again may be performed once continuously or may be repeated a plurality of times intermittently.

  According to this method, since the applied foam is re-foamed on the hair, the foam of the two-component hair dye composition is left uncoated even on a difficult-to-confirm part such as the hair on the back of the head without using a mirror. In addition, the foam can be spread quickly and surely to the base of the hair without blocking and without uneven coating.

Examples 1-11, Comparative Examples 1-4
The 1st agent and 2nd agent of the compounding composition (mass%) shown in Tables 1-3 were prepared, and it mixed by the mass ratio of 1: 1.5, and was set as the liquid mixture. These “ejection properties”, “drip control effect” and “bleaching power” were evaluated. The results are also shown in Tables 1 to 3.
As the former container, a squeeze foamer (Daiwa Steel Co., Ltd., S1 squeeze foamer, mesh roughness is 150 mesh mixing chamber, tip 200 mesh, the total opening area of the narrowest part of the air introduction path is 0.27 mm ² The inner diameter of the dip tube is 2.0 mm in Examples 1 to 6 and Comparative Examples 1 to 4 for the purpose of adjusting the amount of liquid mixed in the bubbles to adjust the stability of the bubbles and the uniformity of the bubbles. 11 was used properly with φ1.7mm.). The flexible container part to be squeezed was made of polypropylene and used an internal volume of 210 mL.
Examples 1 to 6 are reference examples and are not included in the scope of the claims.

(Evaluation method)
・ Dischargeability from foam container (foaming)
Three panelists visually observed the foam which put the liquid mixture in the former container which made it erect, and squeezed it, and evaluated it based on the following reference | standard. In Tables 1 to 3, evaluations given by two or more people, or intermediate evaluations when three people were divided, were shown.
A: Uniform and fine foam B: Almost uniform fine foam C: Slightly coarse foam D: A part that does not become foam is generated and liquid is mixed

・ Drip-suppressing effect Four wigs (Burelux, No. 775S, total hair weight of about 70 g) were cut into short hairs with the hair cut along the chin line for each example and comparative example. Prepared one by one. 50 g, 70 g, 85 g, and 100 g of foam discharged in a squeezed foam container were placed in a former container in which the mixed liquid was erected, and the presence or absence of dripping was observed after 30 minutes.
A: No dripping even when 100 g is applied B: No dripping even when 85 g is applied, slight dripping when 100 g is applied C: No dripping even when 70 g is applied, slight dripping when 85 g is applied There is dripping D: No dripping even when 50g is applied, slight dripping when 70g is applied E: There is dripping when 50g is applied

・ Decolorization power Based on the evaluation of the above-mentioned dripping suppression effect, the bath ratio (the amount of hair: the mass ratio of the amount of foam in the mixed solution) was changed, and the amount without dripping of each example and comparative example was applied. The decolorizing power was compared. The bath ratio based on the evaluation of the dripping suppression effect is as follows. Evaluation A: Bath ratio 1: 1.4, Evaluation B: Bath ratio 1: 1.2, Evaluation C: Bath ratio 1: 1, Evaluation D: Bath ratio 1: 0.7, Evaluation E: Bath ratio 1: 0.5
Evaluation of decoloring power applied the decoloring agent which discharged each liquid mixture as a foam with 10 g of Chinese black-haired tresses by the determined bath ratio, and left still for 30 minutes in a 30 degreeC thermostat. Thereafter, it was rinsed with warm water of 40 ° C., shampooed and rinsed, and dried with a dryer.
The brightness of the hair of the comparative example 1 was made into the standard, and three panelists observed visually and evaluated based on the following reference | standard. In Tables 1 to 3, evaluations given by two or more people, or intermediate evaluations when three people were divided, were shown.
A: Much brighter than standard B: Brighter than standard C: Slightly brighter than standard D: Almost the same as standard E: Darker than standard

Examples 12-15
The 1st agent and 2nd agent which are shown in Table 4 were prepared, and it mixed with the mass ratio of 1: 1.5 like the above, and after putting it into the liquid mixture, it put into the squeeze foamer container. However, the inner diameter of the squeeze foamer dip tube was φ1.3 mm in Examples 12 and 13, and φ1.6 mm in Examples 14 and 15.
As described above, when “Ejectability”, “Drip-suppressing effect” and “Dyeing power” were evaluated, all were good.

Claims (6)

It consists of a first agent containing an alkali agent, a second agent containing hydrogen peroxide, and a non-aerosol foamer container that discharges a mixture of the first and second agents in the form of foam. Ingredients (A) and (B)
(A) Mono long chain aliphatic group trimethylammonium salt: 0.02 to 10% by mass
(B) At least one carboxylic acid anionic surfactant selected from the group consisting of N-acyl amino acid salts, N-acyl-N-alkyl amino acid salts and ether carboxylates : 0.5 to 10% by mass
A two-component hair dye that contains 1 to 300 mPa · s at 25 ° C.   The two-component hair dye according to claim 1, wherein the mass ratio (B) / (A) of the component (B) to the component (A) is 1 to 100.   Furthermore, the two-component hair dye of Claim 1 or 2 containing the polymer or copolymer of a diallyl quaternary ammonium salt.   The two-component hair dye according to any one of claims 1 to 3, wherein the component (A) is a cetyltrimethylammonium salt or a stearyltrimethylammonium salt.   The two-component hair dye according to any one of claims 1 to 4, wherein the component (A) and the component (B) are contained separately in a first agent and a second agent.   The mixture of the two-component hair dye according to any one of claims 1 to 5 is discharged in a foam form from a non-aerosol foamer container, and the foam-like mixture liquid is applied to the hair and then again on the hair. Foaming hair dyeing method.