JP2010006804A - Two agent type foamy hair dyestuff - Google Patents

Abstract

In spite of containing an oxidative dye in a high concentration, the reaction of the oxidative dye does not become too fast when mixing the first agent and the second agent, and the rise in the temperature of the mixture is suppressed, and the color Providing a two-component foam hair dye that can be dyed evenly.
A first agent containing an alkali agent, a second agent containing hydrogen peroxide, and a non-aerosol foamer container for discharging a mixture of the first agent and the second agent in the form of foam. This is a two-component foam hair dye, which contains components (A), (B) and (C) in the mixed solution, and the mixed solution has a viscosity at 25 ° C. of 1 to 300 mPa · s. Hair dye.
(A) Oxidative dye 1.06-6.0% by mass
(B) Ammonia
(C) Carbonate ion or hydrogen carbonate ion 0.8-1.8% by mass
[Selection figure] None

Description

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

  A two-component foam hair dye is a hair dyeing operation that is easily performed by discharging a mixture of a first agent containing an alkali agent and an oxidative dye and a second agent containing an oxidizer into a foam. In addition, a high hair dyeing effect can be obtained by a single treatment compared with a one-component foam hair dye. Among these, aerosol type two-component foam hair dye is liable to cause decoloration unevenness and dyeing unevenness, metal pressure resistant container etc. is oxidized and corroded by hydrogen peroxide, internal pressure of pressure resistant container by decomposition of hydrogen peroxide Has the problem of rising excessively.

  On the other hand, what discharges a two-component hair dye in foam form from a non-aerosol-type former container is proposed (refer to patent documents 1-6). These can be applied to the hair without any unevenness by discharging the mixed liquid of the first agent and the second agent from the former container in the form of foam, and color unevenness does not occur in the finish. It is useful for eliminating the level difference.

  However, in the two-component foam hair dye, the mixed liquid of the first agent and the second agent is discharged in the form of foam, and the surface area of the mixed liquid becomes large, so that ammonia mixed as an alkaline agent is likely to volatilize. . Therefore, when a relatively large amount of ammonia is blended in consideration of decolorizing power and the like, the problem of irritating odor becomes larger than other dosage forms, and countermeasures are required. For this reason, in the two-component foam hair dye, in order to suppress the volatilization of ammonia, a considerable amount of carbonate ion (including hydrogen carbonate ion) is blended to adjust the pH of the system to be low.

JP 2004-339216 A JP 2006-124279 A JP 2007-291015 A JP 2007-291016 JP JP 2007-314524 JP 2007-314523 JP

  Oxidative dyes, such as hair dyes for white hair, may be blended at high concentrations, but the present inventors have proposed non-aerosol two-part foamy dyes that have such a low viscosity form. When trying to make a hair agent, it was found that the reaction of the oxidation dye becomes too fast when the first agent and the second agent are mixed, and the control becomes very difficult. This increase in reaction speed is due to the heat generated when the liquid temperature rises and the color unevenness caused by the difference in color between the first and last applied parts of the hair. Causes the occurrence.

  Therefore, although the present invention contains an oxidation dye at a high concentration, the reaction of the oxidation dye does not become too fast when the first agent and the second agent are mixed, and an increase in the liquid temperature of the mixture is suppressed, It is another object of the present invention to provide a two-component foamy hair dye which can be dyed without color unevenness, has sufficient covering power for gray hair, and has a mixed liquid viscosity in a specific range.

  By adjusting the carbonate ion or hydrogen carbonate ion blended in the two-component foam hair dye within a certain concentration range, the inventors suppress an excessive increase in the reaction rate. Has been found to be resolved.

The present invention includes a first agent containing an alkali agent, a second agent containing hydrogen peroxide, and a non-aerosol foamer container for discharging a mixture of the first agent and the second agent in the form of foam. This is a two-component foam hair dye, which contains components (A), (B) and (C) in the mixed solution, and the mixed solution has a viscosity at 25 ° C. of 1 to 300 mPa · s. A hair dye is provided.
(A) Oxidative dye 1.06-6.0% by mass
(B) Ammonia
(C) Carbonate ion or hydrogen carbonate ion 0.8-1.8% by mass

  Although the two-component foam hair dye of the present invention contains the oxidative dye in a high concentration, the reaction of the oxidative dye does not become too fast when the first agent and the second agent are mixed, It is particularly useful as a hair dye for white hair because the increase in the liquid temperature is suppressed, dyeing without color unevenness is possible, and the covering power of white hair is sufficient.

It is a figure which shows the state before mixing of the two-component hair dye composition used by the Example and the comparative example. It is a figure which shows the state after mixing of the two-component hair dye composition used by the Example and the comparative example.

[(A): Oxidative dye]
The first agent of the two-component foam hair dye of the present invention contains the component (A) oxidation dye. As this oxidation dye, paraphenylenediamine, paraaminophenol, toluene-2,5-diamine, N, N-bis (2-hydroxyethyl) paraphenylenediamine, 2- (2-hydroxyethyl) paraphenylenediamine, 4- Dye precursors such as amino-3-methylphenol, 6-amino-3-methylphenol, orthoaminophenol, 1-hydroxyethyl-4,5-diaminopyrazole, resorcin, 2-methylresorcin, metaaminophenol, 5- Examples include couplers such as aminoorthocresol, 5- (2-hydroxyethylamino) -2-methylphenol, metaphenylenediamine, 2,4-diaminophenoxyethanol, and 1-naphthol.

  Two or more kinds of the oxidation dyes of component (A) can be used in combination, and the content thereof is 1.06 to 6.0% by mass in the mixed solution of the first agent and the second agent, preferably 1.32 to It is 4.0 mass%, More preferably, it is 1.32-2.0 mass%.

  In addition, the first agent of the two-component foam hair dye of the present invention may contain a direct dye in addition to the oxidation dye. Examples of the direct dye include paranitroorthophenylenediamine, paranitrometaphenylenediamine, basic yellow 87, basic orange 31, basic red 12, basic red 51, basic blue 99, and acid orange 7.

[(B): Ammonia]
The first agent of the two-component foam hair dye of the present invention contains component (B) ammonia as an alkaline agent. The content of ammonia is preferably 0.60 to 2.0 mass%, more preferably 0.65 to 1.8 mass%, and particularly preferably 0.70 to 1.6 mass% in the mixed liquid of the first agent and the second agent. The ammonia content here includes the amount of ammonium ions derived from the supply source of the component (C) described later.

[(C): carbonate ion or bicarbonate ion]
The first agent of the two-component foam hair dye of the present invention contains the carbonate ion or bicarbonate ion of component (C). Examples of the supply source of carbonate ions and hydrogen carbonate ions include ammonium carbonate, sodium carbonate, potassium carbonate, ammonium hydrogen carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, guanidine carbonate, and the like. Among them, ammonium carbonate and ammonium hydrogen carbonate are preferable. .

  Component (C) carbonate ion or hydrogen carbonate ion content (ion equivalent amount assuming that the source is 100% dissociated) suppresses the reaction rate of the oxidation dye when mixing the first agent and the second agent From the point of preventing the liquid temperature rise and color unevenness of the mixed solution, it is set to 0.8 to 1.8% by mass in the mixed solution of the first agent and the second agent, preferably 0.9 to 1.7% by mass, more preferably 1.0 to 1.6% by mass.

[(D): Alkanolamine]
From the viewpoint of preventing the volatilization of the component (B) while solving the problems of the present invention, the first agent of the two-component foam hair dye of the present invention, as an alkaline agent other than the component (B), The alkanolamine of component (D) can be included. Examples of the alkanolamine include monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, 2-amino-2-methylpropanol, 2-aminobutanol and the like, and monoethanolamine is preferable from the viewpoint of dyeability.

  The alkanolamine of component (D) can be used in combination of two or more, and the content thereof is 0.01 to 2.5% by mass, more preferably 0.1 to 2% by mass in the mixed solution of the first and second agents. 0.2-1 mass% is preferable.

  The pH of the mixed solution of the first agent and the second agent in the two-component foam hair dye of the present invention is preferably 8 to 11, particularly 8.5 to 10.5, and the alkaline agent including the components (B) and (D) The total amount used is appropriately adjusted so that the pH of the mixed solution falls within the above range.

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

[Surfactant]
In order to make the foam easily formed by mixing the air and the hair cosmetic by the foam discharge means of the former container and to stabilize the foam, either the first agent or the second agent, or Both contain a surfactant. As the surfactant, an anionic surfactant, an amphoteric surfactant, and a nonionic surfactant are preferable in order to realize good foaming that is easy to apply to hair even when the liquid temperature is low or close to room temperature.

  Examples of the anionic surfactant include alkyl sulfates and polyoxyalkylene alkyl sulfates, and those having an alkyl group having 10 to 24 carbon atoms, particularly 12 to 18 carbon atoms, are preferred. Those that are linear are preferred. Further, polyoxyalkylene alkyl sulfates, particularly polyoxyethylene alkyl sulfates are more preferable, and those having an average addition mole number of oxyethylene groups of 1 to 10, particularly 2 to 5 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.

  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 polymerization of glucoside is 1 to 5, particularly preferably 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.

  The content of the surfactant is preferably 2 to 10% by mass, more preferably 2.5 to 7% by mass, and particularly preferably 3 to 5% by mass in the mixed solution of the first agent and the second agent.

(Water-soluble cationic polymer)
The two-component foam hair dye of the present invention may contain a water-soluble cationic polymer in one or both of the first agent and the second agent. The water-soluble cationic polymer refers to a water-soluble polymer having a cationic group or a group that can be ionized to a cationic group, and includes an amphoteric polymer that becomes cationic as a whole. That is, the water-soluble cationic polymer includes an amino group or an ammonium group in the side chain of the polymer chain, or a water-soluble one containing a diallyl quaternary ammonium salt as a constituent unit, such as cationized cellulose, cationic starch, Examples thereof include cationized guar gum, a polymer or copolymer of diallyl quaternary ammonium salt, and quaternized polyvinyl pyrrolidone.

  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, eg, Marquat 550; Nalco); acrylic acid / diallyl quaternary ammonium salt / acrylamide copolymer ( Polyquaternium-39 such as Marquat Plus 3331 (Nalco).

  Specific examples of the quaternized polyvinylpyrrolidone include a quaternary ammonium salt (polyquaternium-11 such as Guffcoat 734, 755, and 755N) obtained from a copolymer of vinylpyrrolidone (VP) and dimethylaminoethyl methacrylate and diethyl sulfate. ; IS Japan Co., Ltd.).

  Specific examples of the cationized cellulose include a polymer of a quaternary ammonium salt obtained by adding glycidyltrimethylammonium chloride to hydroxyethyl cellulose (polyquaternium-10 such as Leogard G, GP; Lion Corporation, polymer JR-125, JR-400, JR-30M, LR-400, LR-30M; Amerchol), hydroxyethylcellulose / dimethyldiallylammonium chloride copolymer (polyquaternium-4, eg Cellcoat H-100, L-200; National Starch and Chemical Co.).

  Among these, polymers having a dimethyldiallylammonium salt structure as a structural unit, for example, polyquaternium-4, polyquaternium-6, polyquaternium-7, polyquaternium-22, polyquaternium-39 are preferred, and polyquaternium-6, polyquaternium-7, Polyquaternium-22 and polyquaternium-39 are preferable, and polyquaternium-22 is particularly preferable.

  Two or more kinds of water-soluble cationic polymers can be used in combination, and the content thereof is from the first agent and the second agent in terms of good foaming, prevention of dripping, and good dischargeability from the former container. 0.01 to 3% by mass, more preferably 0.05 to 2% by mass, and particularly preferably 0.1 to 1% by mass in the mixed solution of the agent.

[Higher alcohol]
The two-component foam hair dye of the present invention can contain a higher alcohol in order to improve foaming and enhance the effect of suppressing dripping after being left on the hair. . As the higher alcohol, those having an alkyl group or alkenyl group having 10 to 30 carbon atoms, more preferably 12 to 24 carbon atoms, particularly 14 to 22 carbon atoms are preferable, and those having an alkyl group, particularly a linear alkyl group are preferable. Examples of the higher alcohol include myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, isostearyl alcohol, oleyl alcohol and the like. Two or more of these can be used in combination.

  Two or more kinds of higher alcohols can be used in combination, and can be contained in either one or both of the first agent and the second agent. The content of the higher alcohol in the mixed liquid of the first agent and the second agent does not inhibit the foaming property when the liquid temperature is low, and enhances the effect of suppressing dripping while standing, It is 0.01-0.8 mass%, Preferably it is 0.1-0.7 mass%, Especially 0.2-0.6 mass%.

[Non-volatile hydrophilic solvent]
Furthermore, it is preferable to contain a non-volatile hydrophilic solvent in the first agent or the second agent. As a result, after applying the two-component foam hair dye of the present invention to the hair and leaving it to stand, moisture evaporates from the hair dye to concentrate irritating components such as hydrogen peroxide. Can reduce irritation to the scalp. 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, 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 0.01 to 5 mass from the viewpoint of reducing the scalp irritation and improving the foam quality even when the liquid temperature is low. %, More preferably 0.1 to 4% by mass, particularly preferably 0.2 to 3% by mass.

[Silicones]
The two-component foam hair dye of the present invention may further contain silicones. Examples of silicones include dimethylpolysiloxane, methylphenylpolysiloxane, polyether-modified silicone, amino-modified silicone, oxazoline-modified silicone elastomer, and the like, and emulsions in which these are dispersed in water using a surfactant. Of these, polyether-modified silicones, amino-modified silicones, and emulsions thereof are preferable because they can be stably dispersed in water without using a thickener.

  The polyether-modified silicone includes terminal-modified and side-chain-modified types such as a pendant type (comb type), a both-end modified type, and a one-end modified type. Examples of such modified silicones include dimethylsiloxane / methyl (polyoxyethylene) siloxane copolymer, dimethylsiloxane / methyl (polyoxypropylene) siloxane copolymer, dimethylsiloxane / methyl (polyoxyethylene / polyoxypropylene) siloxane. A copolymer etc. are mentioned. As the polyether-modified silicone, those having HLB of 10 or more, and particularly those of HLB of 10 to 18 are preferable from the viewpoint of compatibility with water. Here, HLB is based on the value obtained from the cloud number (cloud number: an index correlated with HLB and applied to ether type nonionic surfactants).

  Any amino-modified silicone may be used as long as it has an amino group or an ammonium group, but amodimethicone is preferable.

  The content of the silicones in the mixed solution of the first agent and the second agent is preferably 0.01 to 10% by mass in order to smoothly blend the foam into the hair and to impart a high conditioning effect to the hair. 0.1 to 5% by mass, particularly 0.5 to 3% by mass is preferable.

[Other ingredients]
In addition, the first agent and the second agent are fragrances, ultraviolet absorbers, sequestering agents such as edetic acid, bactericides, preservatives such as methyl parahydroxybenzoate, phenacetin, 1-hydroxyethane-1 , 1-diphosphonic acid, a stabilizer such as oxyquinoline sulfate, an organic solvent such as ethanol, benzyl alcohol and benzyloxyethanol, a water-soluble polymer compound such as hydroxyethyl cellulose, a humectant, and the like. The mixed liquid of the first agent and the second agent is preferably water as a main medium.

  The oxidative hair dye composition of the present invention is provided as a two-part oxidative hair dye containing a first agent containing an alkaline agent and a second agent containing hydrogen peroxide. Here, the two-part formula means a three-part oxidative hair dye which is used by further mixing a third part containing a persulfate or a third part containing a conditioning component in addition to the first and second parts. Agents should also be included. The mixing ratio of the first agent and the second agent is preferably 1: 4 to 4: 1 by mass ratio, and more preferably 1: 2 to 2: 1.

〔viscosity〕
The viscosity of the mixed solution of the first agent and the second agent is 1 to 300 mPa · s, preferably 2 to 200 mPa · s, more preferably 3 to 100 mPa · s, and particularly preferably 5 to 30 mPa · s. In addition, the viscosity here is a value after rotating at 60 rpm for 1 minute using a rotor No. 1 or No. 2 with a B-type rotational viscometer (model TV-10) manufactured by Tokimec Co., Ltd. at 25 ° C. To do. When the measurement target is less than 100 mPa · s, use rotor No. 1, and when 100 to 499 mPa · s, measure using rotor No. 2. Note that the measurement is performed in a constant temperature bath at 25 ° C., the measurement is performed immediately after mixing the first agent and the second agent, and the temperature change due to reaction heat is ignored.

  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 mass and volume of bubbles discharged at 25 ° C. Put 100g of liquid mixture into S1 squeeze foamer container (Daiwa Seisakusha, volume 210mL, mesh roughness (mesh) is 150 mesh per mixing chamber (150 mesh per 1 inch (25.4mm)), tip 200 mesh) From the time when the remaining amount is 80 g, 20 g of foam is discharged into a 1000 mL measuring cylinder, 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 mass 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 ejecting 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 propellant for high-pressure gas, so that 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, pump former E3 type, F2 type [above, Daiwa Steel, Food and Containers (vol.35, No.10, p588-593 (1994); vol.35, No. 11, p624 to 627 (1994); vol.36, No.3, p154 to 158 (1995))], S1 squeeze foamer (Yamato Seisakusha, JP 7-215352 A), electric whisk (Matsushita) Electric industry), air spray former (air spray international company), and the like. As the former container used for the two-component foam 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 net mesh is preferably 50 to 280 mesh, more preferably 90 to 250 mesh, and more 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. Examples of the material of such a net include nylon, polyethylene, polypropylene, polyester, Teflon (registered trademark), carbon fiber, stainless steel, and the like, more preferably nylon, polyethylene, polypropylene, polyester, and more. Nylon is preferable.

  In the former container used in the two-component foam hair dye of the present invention, at least one, preferably a plurality of such nets are disposed, and the mixing chamber is particularly advantageous from the viewpoints of economy, foam stability, and the like. It is preferable to dispose one sheet at each of the two locations of the tip and the tip.

  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 foam hair dye of the present invention consisting of 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 at the time of use Both agents may be transferred to the former container and mixed, but one agent is filled in the former container, the other agent is filled in a separate container, and the other agent is placed in the former container at the time of use. You may make it move to. 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 (particularly hair) using the two-component foam 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 generally used by application of a hair dye composition, and it is preferable not to perform 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 are mixed in the former container of the two-component hair dye of the present invention. The foamy liquid mixture discharged from the container may be applied directly to the hair, or may be applied to the hair using a tool such as a hand or a brush. From the viewpoint of preventing the agent from splashing and dripping, it is more preferable to apply it to the hair after taking it once in a hand (with gloves).

  After application, leave for about 3 to 60 minutes, preferably about 5 to 45 minutes. At this time, it is preferable to foam again on the hair from the viewpoint of further preventing dripping during standing and allowing the mixed solution to sufficiently spread to the base of the hair. 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.

  After these operations, the mixture is washed away. Then, after shampooing and rinsing as appropriate, the hair is washed and dried.

Examples 1-3 and Comparative Examples 1-5
The 1st agent and the 2nd agent of the compounding composition (mass%) shown in Table 1 and 2 were prepared (Examples 1-3 and Comparative Examples 1-4).
As shown in FIG. 1, 40 g of the first agent (A1) is placed in the first container (2), and 60 g of the second agent (A2) is placed in the second container (3) (cum squeeze container body (4); Each product was filled to 210 mL). In addition, a squeeze former (5) (S1 squeeze foamer manufactured by Daiwa Steel Co., Ltd., the mesh roughness was 150 mesh mixing chamber, the tip was 200 mesh, and the net material was nylon) was prepared.
The first agent and the second agent stored in a room at 25 ° C. were mixed in a ratio of 1: 1.5 (mass ratio) in the container body (4) to obtain the state shown in FIG. The mixed solution was discharged from the former container in the form of foam, and the following evaluation was performed.

On the other hand, as Comparative Example 5, a two-component hair dye comprising the same first agent as Comparative Example 4 in Table 2 and a second agent (cream) having the following formulation (viscosity at 25 ° C. when mixed: 15800 mPa -S) was prepared. First agent and second agent stored in a room at 25 ° C are placed in a container with a lid at a ratio (mass ratio) of 1: 1.5. Used for evaluation.
(mass%)
Hydrogen peroxide solution (35% by mass) 16.30
Stearyltrimethylammonium chloride 1.20
Polyoxyethylene cetyl ether 7.00
Cetanol 7.00
Liquid paraffin 0.50
Propylene glycol 4.00
Hydroxyethyl cellulose 1.00
1-hydroxyethane-1,1-diphosphonic acid 0.08
Oxyquinoline sulfate 0.04
Sodium hydroxide solution (48% by mass) Amount adjusted to pH 3.8 Purified water Remaining

The temperature rise of the mixed solution The semi-long hair of a woman in her 40s who is a test subject was dyed with 80 g of the mixed solution, and the temperature increase of the mixed solution was evaluated according to the following criteria.
○: Did not feel hot from application (20 minutes) to standing (20 minutes) ×: Immediately washed out the mixture because it felt hot after a while.

Each 2 g of the irritating odor mixture was discharged into a petri dish having a diameter of 10 cm, smelled, and the irritating odor was evaluated according to the following criteria.
◎: Slightly irritating odor ○: Slightly irritating odor △: Feeling irritating odor ×: Strongly irritating odor

Coatability hair the same hairstyle with trimmed at jaw line Wig (Co. view LUX, No775S) relative to, for former a mixture ejected into foam from the vessel and 80g coating (Comparative Example 5, It was applied by spreading the mixed solution discharged from the nozzle with a comb. The coating properties were evaluated according to the following criteria and are shown in Table 3.
○: Can be easily applied evenly from the root to the hair tip ×: Difficult to apply evenly from the root to the hair tip

80 g of the liquid mixture discharged in the form of foam from a former container was applied to a wig (Beaulux Co., Ltd., No775S) having the same hairstyle in which liquid dripping hair was cut along the chin line. The liquid sag was evaluated according to the following criteria and is shown in Table 3.
○: No liquid dripping ×: Liquid dripping

Evaluation was made by dyeing a light black hair bundle (Chinese Hair Co., Ltd., Bulux, BS-B). 0.7 g of a mixed liquid discharged in a foam form from a former container was applied to a black hair bundle having a length of 10 cm and a weight of 1 g. The dyed hair bundles were evaluated for lightness according to the following criteria and are shown in Table 3.
A: Excellent light color ○: Good light color △: Slightly weak light color ×: Weak light color

Change in dyeing power after mixing time After mixing the first agent and the second agent on a gray hair bundle (Chinese Hair Co., Ltd., BM-W), immediately discharge it in a foam form from the former container Evaluated by comparing the dyeing power when the mixed liquid is applied and when the mixed liquid discharged in foam form from the former container is applied to the white hair bundle under the same conditions after being left for 20 minutes after mixing. did.
0.7 g of a foam-like mixed solution was applied to a hair bundle having a length of 10 cm and a weight of 1 g, and after standing in a thermostatic bath at 30 ° C. for 20 minutes, it was dyed by washing with water and shampooing. With respect to the dyed hair bundle, the hair bundle dyed with the mixed liquid immediately after mixing and the hair bundle dyed with the mixed liquid after being left for 20 minutes after mixing were visually compared and evaluated in Table 3. Indicated.
◎: Little difference is seen ○: Slight difference is seen △: Some difference is seen ×: Difference is known at a glance

Applying 80g of liquid mixture discharged in foam form from a former container to a black hair wig (Burex Co., Ltd., No775S) containing 10% of gray hair with hair covered with chin lines. did. After standing for 20 minutes, shampooing, rinsing and drying were sequentially performed. The coverage of gray hair was evaluated according to the following criteria, and shown in Table 3.
◎: Uniform hair cover evenly over the entire hair ○: Uniform hair cover even over the entire hair △: Uniform hair cover over the entire hair but slightly weak ×: The hair was not uniform over the entire hair, and the cover of weak white hair was shown.

According to the formulation of each example, excessive temperature rise of the mixed liquid is suppressed, almost no irritating odor is felt, excellent coating properties, no liquid sag, no uneven dyeing, and a bright color, Fully covered gray hair.
On the other hand, in Comparative Examples 1, 2, and 3 where the carbonate ion concentration was low (or absent), the evaluation on light color and white hair covering power was poor. In Comparative Example 4, since the carbonate ion concentration was too high, the reaction of the oxidation dye was excessively fast, and the mixed solution was overheated, resulting in color unevenness.
In Comparative Example 5 corresponding to the widely used cream type, the mixed solution does not become hot even when the carbonate ion concentration is high, but since the viscosity is high, it cannot be made into a foam with a squeeze foamer and is inferior in applicability. It was a thing.

DESCRIPTION OF SYMBOLS 1 Each component of a two-component hair dye composition 2 1st container 3 2nd container 4 Container body of a squeeze container 5 Squeeze former 6 Squeeze container
A1 1st agent
A2 Second agent
A3 liquid mixture

Claims (4)

A two-component foam containing a first agent containing an alkali agent, a second agent containing hydrogen peroxide, and a non-aerosol foamer container for discharging a mixture of the first agent and the second agent into a foam. A two-component foamy hair dye comprising the components (A), (B) and (C) in the mixed solution, wherein the mixed solution has a viscosity at 25 ° C. of 1 to 300 mPa · s. .
(A) Oxidative dye 1.06-6.0% by mass
(B) Ammonia
(C) Carbonate ion or hydrogen carbonate ion 0.8-1.8% by mass   Furthermore, the two-component foamy hair dye of Claim 1 containing a component (D) alkanolamine.   The two-component foamy hair dye according to claim 1 or 2, wherein the supply source of the component (C) is ammonium carbonate or ammonium hydrogen carbonate.   The two-component foamy hair dye according to any one of claims 1 to 3, wherein the content of component (B) ammonia is 0.60 to 2.0 mass% in the mixed solution.

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