WO2010106789A1

WO2010106789A1 - Hair dyeing method

Info

Publication number: WO2010106789A1
Application number: PCT/JP2010/001854
Authority: WO
Inventors: 真主山口; 哲也千葉; 大輔児玉; 宏和酒井; 創宮部
Original assignee: 花王株式会社
Priority date: 2009-03-18
Filing date: 2010-03-16
Publication date: 2010-09-23
Also published as: JP5462505B2; TWI495441B; JP2010215576A; TW201041539A; CN102355882A; CN102355882B

Abstract

Disclosed is a hair dyeing method wherein a hair dye composition having a first agent including an alkaline agent and a second agent including a oxidizing agent, wherein at least one of the first agent and second agent includes a surfactant, impregnates a structural body including a flexible porous material with an apparent density of 15 - 70 kg/m³ and a hardness of 50 - 250 N. Froth is formed by performing an operation that deforms the flexible porous material by means of the application and release of outside force thereupon, and the hair dye composition in froth form is applied to hair, allowed to sit for 3 - 60 minutes, and afterwards washed off.

Description

Hair dyeing method

The present invention relates to a method for dyeing hair.

The technique of dyeing hair with a liquid or cream hair dye composition is widespread, and since a sufficient amount of the hair dye composition is applied to the hair while preventing dripping, a viscous dye is used. The hair composition is applied to the hair using a dedicated comb or brush for dyeing. It is difficult to apply such a hair dye composition to hair evenly. In particular, skills such as blocking and a matching mirror are required for the application of the root and back of the hair.

On the other hand, a so-called shampoo type hair dye is known, which foams a liquid hair dye composition on the hair, and facilitates high viscosity and foaming required to prevent dripping. For this reason, it is difficult to satisfy both the demands contradictory to the low viscosity, and this is not a suitable method.

Therefore, Patent Document 1 proposes a hair cosmetic product comprising a two-component hair dye and a foam container that is discharged in the form of foam. According to this, it is not necessary to use a dedicated comb or brush, and it is not necessary to make full use of skills such as blocking and a mirror. Because of this merit, the product is supported by many users.

However, in this technical proposal, it is necessary to use a chemical mixing / dispensing container with a complex structure called a former container, so the cost is unavoidable and the viscosity of the hair dye that can be discharged from the former container is limited. The design is also restricted. Further, all the hair dye composition in the former container must be used up, and it is uneconomical to add to partial white hair dyeing or undyed hair, so a new hair dyeing method is required.

Patent Document 2 proposes a system in which the hair is sandwiched between structures impregnated with the hair dye composition and the hair dye composition is applied. According to this technical proposal, although additional dyeing to a partial dyeing or undyed residue is easy, it is troublesome to dye the entire hair and is not preferable.

JP 2004-339216 A International Publication No. 2008/044198 Pamphlet

The present invention comprises a hair dye composition containing a first agent containing an alkaline agent and a second agent containing an oxidizing agent, and containing a surfactant in at least one of the first agent and the second agent.
An operation of impregnating a structure containing a flexible porous material having an apparent density of 15 to 70 kg / m ³ and a hardness of 50 to 250 N, and deforming the structure by applying and releasing an external force to the flexible porous material By whipping,
The present invention provides a hair dyeing method in which this foamy hair dye composition is applied to hair, left for 3 to 60 minutes, and then washed away.

The present invention also includes a hair dye composition containing a first agent containing an alkaline agent and a second agent containing an oxidizing agent, and containing a surfactant in at least one of the first agent and the second agent;
A hair dyeing kit having a structure containing a flexible porous material having an apparent density of 15 to 70 kg / m ³ and a hardness of 50 to 250 N for foaming a mixed solution of the first agent and the second agent It is to provide.

The present invention relates to a hair dyeing method that is excellent in operability, can be easily dyed without color unevenness, and can cope with both partial dyeing and full-head dyeing.

The present inventor has found that the above-mentioned problems can be solved by impregnating a hair dye composition into a structure containing a flexible porous material to make it foamed, foamed and applied to hair.

In the present invention, the term “hair” refers to hair that grows on the head, and does not include hair that is cut off from the head, such as wigs and tres. The hair may be a doll or any animal, but human hair is preferred.

In the present invention, the hair dye composition is a concept including both a hair dye composition containing a dye and a decoloring agent composition not containing a dye. The hair dyeing method is a concept including a hair decoloring method.

The hair dye composition referred to in the present invention is a two-component composition comprising a first agent containing an alkaline agent and a second agent containing an oxidizing agent, which is stored separately until just before use, and further these first agents. In addition to the second agent, it refers to a multi-drug composition such as a three-component composition comprising a third agent containing an oxidizing aid, and when referring to “total composition”, these are mixed and actually in the hair Refers to the entire composition to be applied.

In the present invention, “external force” means “external force other than gravity” unless otherwise specified.

(Alkaline agent)
As the alkaline agent contained in the first agent, for example, ammonia, alkanolamines such as ethanolamine, sodium hydroxide, potassium hydroxide and the like can be used. Further, as a buffering agent, ammonium salts such as ammonium hydrogen carbonate and ammonium chloride, carbonates such as potassium carbonate and sodium hydrogen carbonate, and the like can be added as appropriate.

The pH (25 ° C.) of the mixed solution of the first agent and the second agent in the hair dye composition used in the present invention is preferably 8 to 12, more preferably 9 to 11. The amount of the alkaline agent used is the total composition. The pH is appropriately adjusted so as to be the above.

〔Oxidant〕
Examples of the oxidizing agent include hydrogen peroxide; persulfates such as ammonium persulfate, potassium persulfate, and sodium persulfate; perborates such as sodium perborate; percarbonates such as sodium percarbonate; sodium bromate; And bromates such as potassium bromate. Among these, hydrogen peroxide is preferable from the viewpoint of decolorization to hair and the stability and effectiveness of the oxidizing agent itself. In addition to hydrogen peroxide, another oxidizing agent such as the above-mentioned persulfate can be used in combination as an oxidizing aid. In this case, the composition containing an oxidation aid can be used as the third agent to form a three-component hair dye composition. Of these, it is preferable to use a combination of hydrogen peroxide and persulfate.

The oxidizing agents can be used alone or in combination of two or more, and the content thereof is preferably 0.5 to 30% by mass, more preferably 1 to 20% by mass in the total composition.

When only hydrogen peroxide is used as the oxidizing agent, the content in the second agent is preferably 1 to 9% by mass, more preferably 3 to 6% by mass, and the hydrogen peroxide content in the total composition is 1 to It is preferably 6% by mass, more preferably 2 to 5% by mass. The pH of the second agent is preferably 2 to 6, and more preferably 2.5 to 4 in order to suppress decomposition of hydrogen peroxide.

When hydrogen peroxide and persulfate are used in combination, the hydrogen peroxide content is 0.5 to 10% by mass in the total composition, and the persulfate content is 0.5 to 25% in the total composition. The total content of both is preferably 1 to 30% by mass.

[Surfactant]
Either the first agent or the second agent is used so that bubbles are easily formed by mixing the air and the hair dye composition with the structure containing the flexible porous material and the bubbles are stable. One or both contain a surfactant.

As the surfactant, any of cationic surfactants, nonionic surfactants, amphoteric surfactants and anionic surfactants can be used, but nonionic surfactants, amphoteric surfactants, anionic surfactants can be used. Agents are preferred.

As the cationic surfactant, mono long chain alkyl quaternary ammonium salts are preferable, and specific examples include cetrimonium chloride, steartrimonium chloride, behentrimonium chloride, stearalkonium chloride, benzalkonium chloride and the like. .

Nonionic surfactants include polyoxyalkylene alkyl ether, polyoxyalkylene alkenyl ether, higher fatty acid sucrose ester, polyglycerin fatty acid ester, higher fatty acid mono- or diethanolamide, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan fatty acid Examples thereof include esters, polyoxyethylene sorbite fatty acid esters, alkyl saccharides, alkylamine oxides, and alkylamidoamine oxides.

Examples of amphoteric surfactants include imidazoline, carbobetaine, amide betaine, sulfobetaine, hydroxysulfobetaine, and amide sulfobetaine.

Anionic surfactants include alkyl benzene sulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, olefin sulfonates, alkane sulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, Examples include α-sulfo fatty acid salts, N-acyl amino acids, phosphoric acid mono- or diesters, and sulfosuccinic acid esters. Examples of the alkyl ether sulfate include polyoxyethylene alkyl ether sulfate. The counter ion of the anionic group of these anionic surfactants includes alkali metal ions such as sodium ion and potassium ion; alkaline earth metal ions such as calcium ion and magnesium ion; ammonium ion; alkanol group having 2 or 3 carbon atoms And cations derived from alkanolamines having 1 to 3 (for example, monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, etc.).

Two or more surfactants can be used in combination, and the content in the total composition is preferably 1 to 50% by mass, 2 to 30% by mass, and more preferably 3 to 25% in terms of feel and emulsification performance. Mass% is preferred.

[Flexible porous material]
The flexible porous material only needs to be a flexible and deformation-resilient material that has numerous fine pores inside, and is a natural sponge obtained by processing aquatic sponges. JIS standard K6400-1 : Include any soft foam material as shown at 2400. Examples of the soft foam material include ether polyurethane, ester polyurethane, polyethylene, polypropylene, nylon and the like. The apparent density of the flexible porous material means the apparent density defined in JIS standard K7222: 2005, and is 15 to 70 kg / m ³ from the viewpoint of the efficiency of foaming the hair dye composition, and 18 to 60 kg. / m ³ is preferable, and 20 to 50 kg / m ³ is more preferable. Further, the hardness of the flexible porous material means the hardness defined by the JIS standard K6400-2: 2004D method, and is 50 to 250 N from the viewpoint of the efficiency of foaming the hair dye composition. 200N is preferable, and 80 to 170N is more preferable. There is no limit to the number of flexible porous material cells required according to JIS standard K6400-1: 2004 Annex 1. For example, 5-100 / 25mm, 15-85 / 25mm, and 20-80. / 25 mm is preferred.

The structure including the flexible porous material may have one type of flexible porous material, or may have two or more types of flexible porous materials having different numbers of cells, apparent density, hardness, and the like. Well, when it has two or more kinds of flexible porous materials, it may be combined in a layered or mosaic shape, for example, and more preferably in a layered state. In particular, when the number of cells of the flexible porous material is as small as 5 to 35/25 mm, two or more types of flexible porous materials are layered from the viewpoint of preventing the liquid hair dye composition from flowing down. It is also preferable to combine them into a structure. When the structure containing the flexible porous material has one layer or two or more layers, the first agent and / or the second agent of the hair dye composition may be embedded in the layer or between the layers. A structure in which a flexible porous material is wrapped with a woven fabric, a nonwoven fabric or a net is also preferable. The woven fabric, non-woven fabric, or net may be any of natural fiber, semi-synthetic fiber, and synthetic fiber, and examples thereof include cotton, rayon, polyvinyl alcohol, polyester, polyethylene, polypropylene, and nylon.

The size of the flexible porous material may be any size as long as it can hold the hair dye composition, efficiently foam and can be used with one hand, and has an apparent volume of 20 to 500 mL, preferably 30 to 450 mL, more preferably 50 to 200 mL. Here, the apparent volume means the volume including the fine pores inside the flexible porous material that forms the structure without applying external force, and the apparent density of the flexible porous material This is the volume determined from the mass. Therefore, even a structure in which a flexible porous material is laminated with a woven fabric, a nonwoven fabric or a mesh, or is wrapped with such a material, the woven fabric, the nonwoven fabric or the net itself, and the woven fabric, the nonwoven fabric, or the mesh is flexible. The space between the porous porous material is not included.

The shape of the structure including the flexible porous material may be a geometric solid or an irregular solid, but from the viewpoint of ease of production, a rectangular parallelepiped, a cube, a sphere, a spheroid, a cylinder, Ellipsoidal columns are preferable, and solids obtained by cutting them with one or two or more planes or curved surfaces, such as a semi-cylinder and a semi-elliptical column, are also preferable. Further, it is also preferable that a part of the surface of the structure is provided with a dent or cutout for receiving or temporarily storing the hair dye composition. Examples of the shape of the depression and the cutout include a rectangular parallelepiped, a cube, a hemisphere, and a cylinder.

[Oxidized dye intermediate]
As the oxidative dye intermediate suitable for the hair dye composition used in the present invention, known precursors and couplers usually used in hair dyes can be used.

Examples of the precursor include paraphenylenediamine, toluene-2,5-diamine, 2-chloroparaphenylenediamine, paraaminophenol, paramethylaminophenol, orthoaminophenol, 2,4-diaminophenol, and N-phenylparaphenylenediamine. These salts are mentioned.

Examples of couplers include metaphenylenediamine, 2,4-diaminophenoxyethanol, metaaminophenol, 2-methyl-5-aminophenol, 2-methyl-5- (2-hydroxyethylamino) phenol, resorcin, 1- Examples thereof include naphthol, 1,5-dihydroxynaphthalene, hydroquinone and their salts.

The precursor and coupler may be used singly or in combination of two or more, and the content thereof is preferably 0.01 to 10% by mass, more preferably 0.1 to 5% by mass in the total composition.

[Direct dye]
On the other hand, as the direct dye, known acidic dyes, basic dyes, disperse dyes, reactive dyes and the like that can be used for hair dyes can be used.

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, and acidic orange 3. Examples of the basic dye include basic blue 99, basic brown 16, basic brown 17, basic red 76, basic yellow 57, and the like.

Examples of direct dyes other than acid dyes and basic dyes include 2-nitro-p-phenylenediamine, 2-amino-6-chloro-4-nitrophenol, 3-nitro-p-hydroxyethylaminophenol, and 4-nitro. -o-phenylenediamine, 4-amino-3-nitrophenol, 4-hydroxypropylamino-3-nitrophenol, N, N-bis (2-hydroxyethyl) -2-nitro-p-phenylenediamine, dispersed purple 1 , Dispersion blue 1, dispersion black 9, HC blue 2, HC orange 1, HC red 1, HC red 3, HC yellow 2, HC yellow 4, HC yellow 5, and the like.

These direct dyes may be used alone or in combination of two or more, and the content thereof is preferably 0.001 to 5% by mass of the total amount of the composition composed of the first agent and the second agent, and 0.01 to 4 mass% is more preferable. In addition, an oxidative dye and a direct dye can be used together. In this case, the total amount of the oxidative dye and the direct dye is preferably 0.05 to 10% by mass, preferably 0.1 to 8% by weight based on the total amount of the composition composed of the first agent and the second agent. The mass% is more preferable.

[Higher alcohol]
The hair dye composition used in the present invention is easy to be held in a structure containing a flexible porous material, improves foaming after foaming, and after applying the hair dye composition used in the present invention to the hair In order to suppress dripping during standing, from the viewpoint of further improving irritation to the skin and scalp and storage stability of the composition, higher alcohol is added to one or more of the first agent and the second agent. Can be contained.

As the higher alcohol, those having an alkyl group or alkenyl group having 10 to 30, more preferably 12 to 24, more preferably 14 to 22 carbon atoms are preferable, and those having an alkyl group and further a linear alkyl group are preferred. preferable. Examples include myristyl alcohol, cetanol, stearyl alcohol, aralkyl alcohol, behenyl alcohol, oleyl alcohol and the like.

Higher alcohols can be used in combination of two or more. The content of the higher alcohol first agent and second agent in the mixed liquid is easy to be held in the structure containing the flexible porous material, foaming, fine and soft foam quality, and dripping while standing From the point of suppressing, it is preferably 0.01 to 1% by mass, more preferably 0.1 to 0.8% by mass, further 0.2 to 0.7% by mass, and further preferably 0.3 to 0.6% by mass. When the higher alcohol is contained in the first agent, the content in the first agent is preferably 0.01 to 2% by mass, more preferably 0.1 to 1.5% by mass, and further 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 further preferably 0.5 to 1% by mass.

[Non-volatile hydrophilic solvent]
In the hair dye composition used in the present invention, water and / or an organic solvent is used as a medium. A non-volatile hydrophilic solvent can be used as the organic solvent. Thereby, after applying the hair dye composition used in the present invention to the hair, while leaving it to stand, moisture evaporates from the hair dye composition, and the irritant component of the oxidizing agent is concentrated. 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. The polyols preferably have 2 to 6 carbon atoms, and examples 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. These can also use 2 or more types together.

The content of the nonvolatile hydrophilic solvent in the whole hair dye composition is preferably 0.01 to 4% by mass from the viewpoint of reducing the scalp irritation and improving the foam quality even when the liquid temperature is low. Further, it is preferably 0.1 to 3% by mass, more preferably 0.2 to 2% by mass.

(PH adjuster)
From the viewpoint of the storage stability of the composition, the hair dye composition used in the present invention, in addition to the alkaline agent, as a pH adjuster, inorganic acids such as hydrochloric acid and phosphoric acid, citric acid, glycolic acid, lactic acid, etc. Organic acids, hydrochlorides such as ammonium chloride and monoethanolamine hydrochloride, phosphates such as monopotassium dihydrogen phosphate and disodium monohydrogen phosphate can be used.

[Other ingredients]
In addition to the above components, other components that are usually used as cosmetic raw materials can be added to the hair dye composition used in the present invention.

Examples of the purpose of blending such components include penetration promotion, pearlization, antiseptic, metal sequestration, stabilization, antioxidant, ultraviolet absorption, moisturizing, product coloring, fragrance, etc. More specifically, animals and plants Examples include fats and oils, higher fatty acids, preservatives, chelating agents, proteins, protein hydrolysates, amino acids, plant extracts, ultraviolet absorbers, vitamins, pigments, and fragrances.

〔viscosity〕
The viscosity of the first agent (25 ° C.) is preferably 1 to 1,200 mPa · s, more preferably 3 to 1,000 mPa · s, and more preferably 5 to 900 mPa · s. The viscosity (25 ° C.) of the second agent is preferably 1 to 300 mPa · s, more preferably 3 to 200 mPa · s, and more preferably 5 to 100 mPa · s. The viscosity (25 ° C.) of the mixed solution of the first agent and the second agent is 1 to 1,000 mPa · s, preferably 3 to 800 mPa · s, more preferably 5 to 500 mPa · s, and further preferably 10 to 250 mPa · s. s. In addition, the numerical value of a viscosity is the value after rotating a rotor for 1 minute using the rotor No. 1 with a Tokyo Keiki Co., Ltd. B type rotational viscometer (model TV-10). The measurement is performed in order from the measurement with the largest number of revolutions, and the measurement is completed at the time when the measurement can be performed without shaking the display, and the subsequent measurements with a smaller number of revolutions are not performed. By setting the viscosity of the mixed solution in the above-described range, it is easy to be held by the structure including the flexible porous material, and the liquid does not easily drip before foaming on the structure, and the foaming efficiency is good. When added to a foam, it is easy to apply to the hair, has a good familiarity with the foam, and can be made into a hair dye composition that hardly causes dripping after application to the hair.
In order to adjust the viscosity to the above-mentioned range, addition of a water-soluble solvent such as ethanol, or the content and type of surfactants, polyols, higher alcohols and the like may be appropriately adjusted.

[Hair dyeing method]
In the hair dyeing method of the present invention, it is preferable to comb the hair in advance before applying the foamed hair dye composition to the hair. Thereby, since it becomes difficult to entangle hair during the process of foaming again, there is no possibility that a hair dye composition may scatter. Moreover, after combing the hair, it is not necessary to perform a blocking operation that is widely used in the application of the hair dye composition, and it is preferable not to perform the blocking operation. Thereby, it becomes easy to perform the operation which applies the hair dye composition mentioned later to hair, and the operation which bubbles again.

No hair styling is applied to the hair to which the hair dye composition is applied, from the viewpoint of being able to dye hair evenly, preventing dripping and obtaining a sufficient hair coloring effect. It is preferable. Moreover, it is preferable that it is dry hair from a viewpoint that the liquid mixture does not thin and can be uniformly dyed, prevents dripping, and obtains a sufficient hair coloring effect. When washing hair immediately before the dyeing process, it is preferable to dry the hair before the dyeing process. Drying the hair means that at least the liquid mainly composed of water adhering to the hair is removed to such an extent that it does not drip in a natural state. Specifically, a towel dry state or a dryer dry state is preferable.

In the hair dyeing method of the present invention, a first agent containing an alkaline agent and a second agent containing an oxidizing agent are mixed, and the mixed liquid is impregnated into a structure containing a flexible porous material, thereby forming a flexible porous material. Foaming is performed by performing an operation to deform the material by applying and releasing an external force. Here, “deform” means a process in which the shape changes due to the process of applying and releasing the external force, and it does not matter whether or not the original shape is restored when the external force is completely released. Also, the release of external force is a concept that includes both complete release and partial release of external force. Alternatively, the first agent and the second agent may be impregnated into the structure without mixing, and mixing and foaming may be performed simultaneously. At that time, the order of impregnation on the structure may be the first agent first, the second agent first, or the first agent and the second agent impregnated several times alternately. Good. When the hair dye composition is a multi-drug type, the third agent may be mixed at the same time as or after the mixing of the first agent and the second agent. You may foam the liquid mixture of an agent and a 2nd agent simultaneously.

The structure can be appropriately impregnated with a liquid such as water before impregnating the hair dye composition or foaming. Furthermore, a liquid such as water can be added at the time of foaming. The liquid to be impregnated may contain a surfactant, a higher alcohol, a non-volatile hydrophilic solvent, and the like used in the hair dye composition used in the present invention. In this case, the total composition of the hair dye composition is a concept including a liquid to be impregnated into the structure.

When the hair dye composition is impregnated into the structure, an external force is applied to the structure in advance, and then the hair dye composition is impregnated while releasing the external force. Many hair dye compositions can be included, which is preferable.

L Foaming is performed by repeatedly applying an external force to the structure to deform it. The external force may be applied by, for example, sandwiching the structure with a specific tool, pushing, twisting, rubbing, or the like, or holding the structure with a hand, pushing, twisting, rubbing, or the like. When using hands, both hands may be used or only one hand may be used. However, gripping with one hand is preferable because the hair dye composition can be foamed easily and efficiently. The number of times the structure is deformed is at least once, preferably 2 to 50 times, more preferably 3 to 40 times, and even more preferably 3 to 25 times each time the structure is impregnated with the agent. The frequency of repeating the operation of deforming the structure is 0.1 to 4 times per second, preferably 0.2 to 3 times, more preferably 0.4 to 2 times. In addition, the operation of deforming the structure may be performed continuously or at intervals. In the case where an interval is provided, the interval is within 1 minute, preferably within 30 seconds, more preferably Within 10 seconds. In addition, when deforming the structure using a hand, it is preferable to wear a glove made of synthetic resin, synthetic rubber or natural rubber in which the hair dye composition is impermeable.

In order to apply the foam hair dye composition to the hair, the foam hair dye composition may be scooped out from the structure by hand, or may be applied on a brush or the like. You may apply directly the hair dye composition which made the structure the body hair directly and made it foamy.

In order to apply the foam hair dye composition to the hair, any method can be used as long as the foam hair composition can be moved to the hair, such as pressing, rubbing, or combing the foam hair composition onto the hair. There may be. In addition, in the process of applying the foam, the foam state is changed by applying external force to the foamy hair dye composition, and the foam may be more foamed. The change in the state of the foam at this stage will be described later. It shall not be included in “foaming again”.

When scrubbing with a hand, it is preferable to wear a glove made of synthetic resin, synthetic rubber or natural rubber in which the hair dye composition is impermeable. It is preferable to apply a foamy hair dye composition to the hair for each size of lemon, since it is just right to take in one hand and it can be easily applied to the hair by hand. In this case, an operation of lathering the hair dye composition on the structure with one hand is performed, and the foam is scooped with the other hand. And after applying the foamy hair dye composition scooped up once to the hair, the operation of foaming on the structure again is performed, and the operation applied to the hair is repeated. This series of operations can be performed very simply and in a short time. It is preferable that part or all of one or both of the gloves and one or more of the structures are connected or bonded together to reduce the trouble of holding the structure.

In addition, the range to which the foam is applied may be the entire hair or only a specific part. That is, the hair region to be dyed may be the entire hair or only a specific portion. The application operation may apply the entire amount of the foamed hair dye composition in one time, or may apply it in multiple times. When applying in multiple times, it may be applied to the entire hair region to be dyed, or may be applied to the whole hair region to be dyed repeatedly by applying to different parts of the region. It may or may not be bubbled again between applications.

According to the hair dyeing method of the present invention, the foaming hair dye composition can be applied in a short time since the blocking operation generally used for applying the hair dye composition is unnecessary. Therefore, the hair part to which the foam is applied may be from anywhere, and it is not necessary to apply it from the neckline like a conventional liquid or cream type two-component hair dye composition. It may be applied from the part to be worried about, and it is preferably applied from the hairline or part of the hair.

For the purpose of spreading the foamy hair dye composition applied to the hair to the root of the hair, returning the disappeared foam to a firm foam, blurring the dyeing boundary in the case of partial dyeing, etc. It is preferable to foam the applied foam hair dye composition again on the hair. After application, it may only be left to be foamed again, or it may be repeated again. Moreover, you may repeat application of foamy hair dye composition, foaming again, and leaving to stand. To foam again, you can inject gas, use a device such as a vibrator or a brush, or shampoo with your fingers, but you also have two agents at the base of your hair. Since it is possible to spread the hair dye composition sufficiently, it is more preferable to perform an operation such as shampooing with a finger. It is preferable that the speed of foaming again by the action of shampooing using a vibrator, a brush, or a finger is controlled so that the foam does not scatter.

Here, the time of foaming again may be after the foam has completely disappeared, in the middle of disappearance of the foam, 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. Again, whipping may be performed once in a continuous manner or may be intermittently repeated a plurality of times. Here, if the vibrator, brush, or finger that is used for whipping again is in continuous contact with a part of the hair, or if it touches again within 1 second even if it once separates, whipping again Is continuous. In short, the place where it is applied may be observed, and at least foamed appropriately before the liquid drips from the applied foam. By re-foaming the foam that has disappeared, dripping can be prevented regardless of the nature of the foam. Furthermore, even if there is a difference in the properties of the foam depending on the composition of the hair dye composition and the structure, it can be changed to a foam suitable for hair dyeing by foaming again. If the composition of the hair dye composition or the structure is made specific, dripping can be prevented, and it may be possible to easily maintain the foam quality suitable for hair dyeing as it is. It is preferable to foam again at least once by the earliest possible time after the application of the hair dye composition is completed. By bubbling again at an early stage, uneven color in the desired range can be prevented. The timing is preferably within 5 minutes after completion of application of the foamy hair dye composition to the hair, more preferably within 3 minutes, and even more preferably within 1 minute.

After the last foamy hair dye composition is applied, leave it for 3 to 60 minutes, preferably 5 to 30 minutes to wash and dry the hair. In the present invention, the standing time after the last foamy hair dye composition is applied refers to the total time required until the foam hair dye composition is completely applied to the entire head or a desired part and then washed away. This is a concept including the time required for re-foaming in addition to the time for simply leaving it. Washing may be simple water washing or shampooing, but shampooing after water washing is preferred. It is also preferable to treat with an after-shampoo hair cosmetic such as a conditioner after shampooing.

Example 1
Using the hair dye and structure shown below, the right side of a Japanese male (white hair content: about 5% forehead, about 60% for the right side, about 40% for the left side, and about 10% for the back) Part (average hair length 4 cm) was dyed.

-Hair dye: 1st agent A of Table 1, 2nd agent A of Table 2
Viscosity of the total composition after mixing the first agent and the second agent at a mass ratio of 1: 1, 15 mPa · s, pH 10.0
Structure A: A flexible porous material was formed into a 7 × 5 × 4 cm rectangular parallelepiped, and a hemispherical recess having a diameter of 2 cm was provided at the center of one plane of 7 × 5 cm. As the flexible porous material, a general color foam EGT-C manufactured by Inoac Corporation was used. This flexible porous material has an apparent density of 22 kg / m ³ and a hardness of 115N.

5 g of the first agent A and 5 g of the second agent A were mixed until uniform, all of the mixed solution was impregnated into the structure A at a time, and the structure A was bubbled 20 times in 15 seconds. The structure A was applied to the right side of the head, and the foamed hair dye composition was applied to the hair. After application, it was bubbled again by the action of shampooing the finger between the right frontal region and the right occipital region for 15 seconds in 10 seconds, and left for 3 minutes. Again, foaming was performed again by shampooing the finger between the right frontal region and the right occipital region for 15 seconds in 10 seconds and left for 15 minutes. After washing the hair dye composition with water, the whole head was washed twice with shampoo.
After drying, white hair on the right side of the head was not observed, and unnatural discontinuity with the frontal or occipital region was not observed.
Next, the left side of the head was dyed. 5 g of the first agent A and 5 g of the second agent A were mixed until uniform, all of the mixed solution was impregnated into the structure A at a time, and the structure A was bubbled 20 times in 15 seconds. The structure A was applied to the left ear, and the foamed hair dye composition was applied to the hair. When the same treatment as that for the upper right side hair dyeing was performed, there was no difference between the right side head and the left side head, and no white hair was observed. Moreover, although there were gray hairs in the frontal and occipital regions, no unnatural discontinuities were observed compared to the left and right side heads.

Example 2
Using the hair dyes and structures shown below, all hairs (medium hair, average hair length of about 15 cm) of Japanese women (white hair content rate: about 10% with no bias in all heads) were dyed.

-Hair dye: 1st agent B of Table 1, 2nd agent B of Table 2
Viscosity 200mPa · s of total composition after mixing first agent and second agent at a mass ratio of 1: 1, pH 10.0
Structure B: The flexible porous material was a spheroid having a major axis length of 8 cm and a minor axis length of 5 cm. As the flexible porous material, SD for Everlight Cleaner manufactured by Bridgestone Corporation was used. This flexible porous material has an apparent density of 28 kg / m ³ and a hardness of 160 N.

25 g of the first agent B and 25 g of the second agent B were placed in a 200 mL lidded container, and the container was shaken and mixed. About one-quarter of the total composition mixed was impregnated into structure B, and structure B was bubbled 20 times in 15 seconds. The structure B was applied from the right side to the front and the foamed hair dye composition was applied to the hair. After application, foaming was performed again by the action of shampooing the finger to draw a circle 15 times in 10 seconds near the application site. Next, in the same manner, the structure B is impregnated with about one-third of the remaining composition, and “whipping, applying to the hair near the first application site, and foaming again near the application site” 3 I went twice.
Furthermore, 25 g of 1st agent B and 25 g of 2nd agent B were put into the above-mentioned 200 mL lidded container, and the container was shaken and mixed. About one quarter of the total composition mixed is impregnated into the structure B, the structure B is squeezed 20 times in 15 seconds, the structure B is applied from the left head to the front, The resulting hair dye composition was applied to the hair. After application, foaming was performed again by the action of shampooing the finger to draw a circle 15 times in 10 seconds near the application site. Next, in the same manner, the structure B is impregnated with about one-third of the remaining total composition, and “whipping, applying to the hair near the first application site on the left side, and foaming again near the application site” is performed. 3 times.
The total amount of the hair dye composition applied to the hair is 100 g. Finally, foaming was performed again by the action of shampooing a finger so as to draw a circle 30 times in 20 seconds, so that the foamy hair dye composition was applied to all the heads, and the mixture was left for 15 minutes. After washing the hair dye composition with water, the whole head was washed twice with shampoo.
After drying, no gray hair was observed in all the heads.

Examples 3 to 6
The right-handed head of a Japanese male is dyed in the same manner as in Example 1 except that the structures used are changed to structures C to F.

Structure C: The flexible porous material 1 is a 7 × 5 × 2 cm rectangular parallelepiped, and a hemispherical recess having a radius of 1 cm is provided at the center of one plane of 7 × 5 cm. Further, the flexible porous material 2 is formed into a 7 × 5 × 2 cm rectangular parallelepiped, and is bonded to the rectangular parallelepiped made of the flexible porous material 1 on a flat surface of 7 × 5 cm.
As the flexible porous material 1, color foam general product EFF manufactured by Inoac Corporation is used. This flexible porous material 1 has an apparent density of 21 kg / m ³ and a hardness of 59N.
As the flexible porous material 2, color foam general product ECA manufactured by Inoac Corporation is used. This flexible porous material 2 has an apparent density of 26 kg / m ³ and a hardness of 130N.
The hair dye composition is impregnated on the flexible porous material 1 side and foamed.

Structure D: A flexible porous material is made into a 7 × 5 × 3 cm rectangular parallelepiped, placed at the tip of a 15 denier nylon stocking, and the insertion portion is sealed with industrial polyester sewing thread # 80.
The flexible porous material is Everlite SB manufactured by Bridgestone. This flexible porous material has an apparent density of 28 kg / m ³ and a hardness of 140 N.

Structure E: A flexible porous material is formed into a 7 × 14 × 1.5 cm rectangular parallelepiped, placed in a polyester tableware cleaner net bag, and the insertion port is sealed with industrial polyester sewing thread # 80.
The flexible porous material is Everlite TD manufactured by Bridgestone. This flexible porous material has an apparent density of 20 kg / m ³ and a hardness of 90N.

Structure F: A flexible porous material is formed into a hemisphere having a radius of 4 cm, and a rectangular parallelepiped recess of 3 × 2 × 1 cm is provided in the center of the plane portion.
As the flexible porous material, Color Foam ECA manufactured by Inoac Corporation is used. This flexible porous material has an apparent density of 26 kg / m ³ and a hardness of 130 N.

Example 7, Example 8, Comparative Examples 1 to 3
First, the structure containing the flexible porous material described in Table 3 was impregnated with 5 g of the first agent A, and then immediately impregnated with 5 g of the second agent, and foamed by the procedure described in Table 4 to create the right temporal hair (containing white hair) The rate was about 10%).

Claims

A hair dye composition comprising a first agent containing an alkaline agent and a second agent containing an oxidizing agent, and containing a surfactant in at least one of the first agent and the second agent,
An operation of impregnating a structure containing a flexible porous material having an apparent density of 15 to 70 kg / m 3 and a hardness of 50 to 250 N, and deforming the structure by applying and releasing an external force to the flexible porous material By whipping,
A method for dyeing hair by applying this foamy hair dye composition to hair, leaving it for 3 to 60 minutes, and then washing it off.
The hair dyeing method according to claim 1, wherein the content of the surfactant in the total composition of the hair dye is 1 to 50% by mass.
3. The hair dyeing method according to claim 1 or 2, wherein the foam hair dye composition is applied to a part of the hair to dye a part or the whole of the hair.
The hair dyeing method according to any one of claims 1 to 3, wherein the structure comprises one or more layers made of a flexible porous material.
The hair dyeing method according to any one of claims 1 to 4, wherein the foam hair dye composition is applied to the hair and then foamed again on the hair before washing.
A hair dye composition comprising a first agent containing an alkaline agent and a second agent containing an oxidizing agent, and containing a surfactant in at least one of the first agent and the second agent;
A hair dyeing kit having a structure containing a flexible porous material having an apparent density of 15 to 70 kg / m 3 and a hardness of 50 to 250 N, for foaming a mixed solution of the first agent and the second agent.