CN109195573B - Oxidation hair dye composition - Google Patents

Abstract

In the multi-component oxidation hair dye composition containing (A) an oxidizing agent, (B) an iodide, and (C) an oxidation dye, the difference in dyeing and coloring caused by the length of the dyeing treatment time can be suppressed to a small extent by containing (C1) m-aminophenol in an amount of 0.05% by mass or more, and therefore, after a predetermined dyeing treatment time has elapsed, the same dyeing can be performed without strictly observing the dyeing treatment time. In addition, in the multi-component oxidation hair dye composition containing the oxidizing agent (a), the iodide (B), and the oxidation dye (C), since the iodide (B) is contained in an amount of 0.05% by mass or more, a large amount of heat is generated by the oxidation-reduction reaction between the iodide and the oxidizing agent, and therefore, the oxidation hair dye can be efficiently heated at a high temperature with a small amount of the reducing agent.

Description

Oxidation hair dye composition

Technical Field

The present invention relates to an oxidative hair dye composition for dyeing hair and the like. More particularly, the present invention relates to an iodide-containing multi-agent oxidation hair dye composition.

More particularly, the present invention relates to an oxidation hair dye composition which can maintain a constant hair dyeing property after a predetermined hair dyeing treatment time and can suppress a difference in hair dyeing coloring caused by the length of the hair dyeing treatment time.

In another aspect, the present invention relates to an oxidation hair dye composition that heats by self-heating when a plurality of agents of a multi-agent oxidation hair dye composition are mixed.

Background

The oxidation hair dye composition is used for dyeing hair by oxidizing an oxidation dye composed of a dye intermediate and a coupling agent on hair to develop color. A general oxidation hair dye composition is composed of a 1 st agent containing an oxidation dye and a 2 nd agent containing an oxidizing agent, and these agents are mixed and used before application to hair.

In order to accelerate the oxidation of the oxidation dye, a method of adding an iodide such as potassium iodide is known. According to the method, hair can be dyed rapidly compared with an oxidation hair dye composition without iodide.

For example, patent document 1 discloses a method for dyeing keratin fibers, in which a composition containing iodide and 5,6-dihydroxyindole is applied to keratin fibers, and then the composition containing hydrogen peroxide is applied at pH2 to 5. Further, patent document 2 discloses a hair dyeing method in which a composition containing an indole derivative, an oxidation dye and potassium iodide is applied to hair, and then a composition containing hydrogen peroxide is applied.

In these hair dyeing methods, a lot of time and labor are required for the hair dyeing treatment in order to apply the 2 compositions to the hair separately.

In view of this, a method of mixing an iodide, an oxidizing agent, and an oxidation dye to prepare an oxidation hair dye composition before application to hair, and applying the oxidation hair dye composition to hair is disclosed (patent documents 3 and 4). According to this method, in addition to the effect of enabling treatment of application to hair in a single step, an effect of enabling strong color development with a low concentration of an oxidation dye was also confirmed.

In addition, as a technique for improving the hair dyeing ability of the oxidation hair dye composition, a method of heating the oxidation hair dye composition by self-heating when mixing the agent 1 and the agent 2 is known. For example, patent document 5 describes a hair dye composition characterized in that a multi-component hair dye generates heat when used in a mixed state, and discloses the use of an oxidation-reduction reaction, a dissolution reaction, a neutralization reaction, and the like as a heat generation principle. In the invention described in patent document 5, sodium sulfite is used as a reducing agent used in the oxidation-reduction reaction.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. Sho 62-238877

Patent document 2: japanese patent No. 2595076

Patent document 3: japanese patent laid-open publication No. 5-194162

Patent document 4: japanese patent laid-open No. 2004-59592

Patent document 5: japanese laid-open patent publication No. 2000-86471

Disclosure of Invention

Problems to be solved by the invention

(problem 1)

In a general oxidation hair dye composition containing no iodide, the shade of hair color changes depending on the length of the standing time after application to the hair (hereinafter referred to as "hair dyeing treatment time"), and the color of the hair is deeply dyed as the hair dyeing treatment time is longer. Therefore, the hair dyeing treatment time is adjusted in order to process the desired hair depth. However, when the coloring depth is largely changed depending on the hair dyeing treatment time, there is a problem that the coloring is made thinner or deeper than a desired color tone.

On the other hand, in the oxidation hair dye composition containing iodide, a predetermined color is formed in a short hair dyeing treatment time, but when it is left to stand, a phenomenon of lightening of color is observed. Therefore, in the oxidation hair dye composition containing iodide, it is necessary to strictly comply with the hair dyeing treatment time set by the designer.

The 1 st object of the present invention is to provide an oxidation hair dye composition of a multi-component type containing an iodide, which can be used to dye a hair to a predetermined color without strictly observing the dyeing treatment time by suppressing the difference in dyeing and coloring caused by the length of the dyeing treatment time to a small extent.

(problem 2)

In the oxidation hair dye composition having improved hair dyeing ability by self-heating, sodium sulfite has been conventionally used as a reducing agent, but since the calorific value is small, it is necessary to add a large amount of the reducing agent. If the reducing agent is added in a large amount, the formulation of other raw materials is restricted or the amount of the oxidizing agent requiring the 2 nd agent is also increased in consideration of stability and the like.

Accordingly, the object of the 2 nd object of the present invention is to search for a reducing agent having a large calorific value in a multi-agent type oxidation hair dye composition which performs self-heating when a plurality of agents are mixed, and to effectively raise the temperature of the oxidation hair dye composition with a small amount of the reducing agent.

Means for solving the problems

(means for solving the problems 1.)

The present inventors have conducted extensive studies to solve the above-mentioned problem 1, and as a result, have found that, when a certain amount or more of m-aminophenol is contained in an iodide-containing oxidation hair dye composition, the change in the shade of hair caused by the length of the hair dyeing treatment time is reduced, and have completed the present invention.

Namely, the present invention is the following oxidation hair dye composition and method of use thereof.

The oxidation hair dye composition of the present invention for solving the above 1 st object is an oxidation hair dye composition containing (a) an oxidizing agent, (B) an iodide, (C) an oxidation dye, wherein the oxidation dye (C) contains (C1) m-aminophenol, and the content of the (C1) m-aminophenol is 0.05% by mass or more.

According to the oxidation hair dye composition, hair can be dyed rapidly because iodide is contained. In addition, since the oxidizing agent and the oxidation dye are mixed and applied to the hair, the application step of the oxidation hair dye composition to the hair can be simplified.

In addition, the inclusion of m-aminophenol suppresses the lightening of the hair color after a predetermined hair dyeing treatment time in the iodide-containing oxidation hair dye composition, and can maintain a constant hair dyeing property even after the predetermined hair dyeing treatment time.

In addition, according to one embodiment of the oxidation hair dye composition of the present invention for solving the above 1 st object, the ratio (C1/C) of the content of (C1) m-aminophenol to the total content of (C) the oxidation dye is 0.01 to 1.

This feature further exerts an effect of suppressing the change in hair dyeing properties due to the length of the hair dyeing treatment time.

In addition, according to an embodiment of the oxidation hair dye composition of the present invention for solving the above 1 st object, the oxidation hair dye composition further comprises an alkaline agent, and the content of the alkaline agent is 0.05 to 2mmol/g.

This feature further exerts an effect of suppressing the change in hair dyeing properties due to the length of the hair dyeing treatment time.

The method for using the oxidation hair dye composition of the present invention for solving the above-mentioned 1 st object is characterized in that the oxidation hair dye composition of the present invention is applied to hair and left for 30 minutes or longer.

According to the method of using the oxidation hairdye of the present invention for solving the above-mentioned 1 st object, since a certain hair dyeing property can be maintained after 30 minutes or more, the difference in coloring of the hair can be suppressed depending on the length of the hair dyeing treatment time.

(means for solving the problems 2.)

The present inventors have conducted extensive studies to solve the above-mentioned problem 2, and as a result, have found that not only can hair be dyed rapidly, but also the temperature of an oxidative hair dye composition can be further increased by using an iodide as a reducing agent, and have completed the present invention.

Namely, the present invention is the following oxidation hair dye composition and method of use thereof.

The oxidation hair dye composition of the present invention for solving the above 2 nd problem is a multi-component oxidation hair dye composition containing (a) an oxidizing agent, (B) an iodide, and (C) an oxidation dye, wherein the content of the iodide (B) is 0.05% by mass or more.

Since the oxidation hair dye composition of the present invention for solving the above-mentioned problem 2 has a larger calorific value than the conventional sodium sulfite when an iodide is used as a reducing agent, the oxidation hair dye composition can be heated more efficiently than the conventional oxidation hair dye composition.

In addition, by using the iodide, an effect that the temperature of the oxidation hair dye composition after the temperature is increased can be maintained for a long time is also observed. According to this effect, the hair dyeing power of the oxidation hair dye composition is improved because the hair is kept at a high temperature during the application to the hair and the hair dyeing treatment.

In addition, according to an embodiment of the oxidation hair dye composition of the present invention for solving the above-mentioned 2 nd object, the oxidation hair dye composition has a feature of containing (D) a higher alcohol.

According to this feature, further increase in temperature of the oxidation hair dye composition and improvement in hair dyeing property are observed.

In addition, according to an embodiment of the oxidation hair dye composition of the present invention for solving the above-mentioned 2 nd problem, the oxidation hair dye composition further comprises a water-soluble polymer.

According to this feature, further improvement in hair dyeing property of the oxidation hair dye composition is observed.

In addition, according to an embodiment of the oxidation hair dye composition of the present invention for solving the above-mentioned 2 nd problem, (C) the oxidation dye contains (C2) p-aminophenol.

According to this feature, further high temperature of the oxidation hair dye composition is observed.

In addition, according to an embodiment of the oxidation hair dye composition of the present invention for solving the above-mentioned problem 2, the oxidation hair dye composition has a characteristic that the pH is 8 to 12.

According to this feature, further high temperature of the oxidation hair dye composition is observed.

The method for using the oxidation hair dye composition of the present invention for solving the above-mentioned problem 2 is characterized by comprising the following steps.

Step 1: mixing (A) an oxidizing agent, (B) an iodide, and (C) an oxidation dye to prepare an oxidation hair dye composition;

step 2: heating the oxidation hair dye composition by self-heating;

and step 3: applying the heated oxidation hair dye composition to hair;

and 4, step 4: after the oxidation hair dye composition is applied to the hair, the hair is left for 10 minutes or more.

According to the method for using the oxidation hair dye composition of the present invention for solving the above-mentioned 2 nd problem, since the reducing agent composed of the iodide is used, it is possible to prepare the oxidation hair dye composition having a higher temperature. Further, the oxidation hair dye composition can maintain a high temperature even when left standing for 10 minutes or longer, and therefore, a hair dyeing treatment method excellent in hair dyeing properties can be provided.

Effects of the invention

According to the oxidation hair dye composition of the present invention for solving the above-mentioned 1 st object, since the difference in coloring of hair dye caused by the length of hair dye treatment time is reduced, it is possible to color the hair dye composition into a predetermined color without strictly observing the hair dye treatment time.

According to the oxidation hair dye composition of the present invention for solving the above-mentioned 2 nd object, since a large amount of heat is generated by the oxidation-reduction reaction of the reducing agent composed of an iodide and the oxidizing agent, the oxidation hair dye composition can be efficiently heated with a small amount of the reducing agent.

Thus, by adding a large amount of the reducing agent, adverse effects caused by the addition of the reducing agent, such as the limitation of the formulation of other raw materials or the increase of the oxidizing agent in the 2 nd agent, can be reduced.

Detailed Description

The following description includes the best mode for carrying out the invention.

[ Oxidation hair dye composition ]

The oxidation hair dye composition of the present invention is an oxidation hair dye composition containing (A) an oxidizing agent, (B) an iodide, and (C) an oxidation dye.

The oxidation hair dye composition is prepared by separating and circulating the oxidizing agent (A) and the oxidation dye (C) into different agents, so that the oxidation dye (C) is developed on the hair. In general, a composition of a 2-dose formula composed of a 1 st dose containing (C) an oxidation dye and a 2 nd dose containing (a) an oxidizing agent is representative, and a multi-dose formula composed of 3 or more doses may be used.

In the present invention, the iodide (B) may be contained in an agent different from the agent 2 containing an oxidizing agent. For example, the (B) iodide may be contained in the 1 st agent containing the (C) oxidation dye, or may be differentiated from the (B) iodide alone by a different agent. From the viewpoint of simplification of mixing operation, it is preferable that the 1 st component is contained in the form of 2-component formula.

An oxidizing agent (A), an iodide (B), and an oxidizing dye (C) are mixed at the time of use to prepare an oxidizing hair dye composition. The mixing operation may be before or after application to the hair. For example, the first and second agents may be mixed just before application to the hair, or the first and second agents may be taken out on a comb or the like and mixed on the hair using a comb or the like. Since the iodide acts as a reducing agent, heat is generated by an oxidation-reduction reaction when the iodide is mixed with an oxidizing agent, and the oxidation hair dye composition is heated. Therefore, if the hair dye composition is mixed before application to the hair, the oxidative hair dye composition is heated before application, and discomfort due to a cold feeling when the hair dye composition is attached to the scalp can be suppressed.

The temperature of the oxidation hair dye composition is not particularly limited, but the maximum reaching temperature is preferably 28 to 50 ℃, more preferably 30 to 48 ℃, and particularly preferably 35 to 45 ℃. The temperature of the oxidation hair dye composition can be set within a predetermined range by adjusting the contents of the oxidizing agent and the reducing agent composed of iodide. When applied to hair, discomfort due to cold feeling when adhering to the scalp is suppressed by adjusting the temperature of the oxidation hair dye composition to 35-45 ℃.

In addition, from the viewpoint of maintaining the temperature of the oxidation hair dye composition after the heating for a long period of time, the average value of the respective temperatures after 10 minutes from the start of the mixing operation and after 20 minutes and after 30 minutes is preferably 28 to 45 ℃, and more preferably 30 to 42 ℃. By setting the temperature in this range, the temperature of the oxidation hair dye composition in the hair dyeing treatment is kept high, and therefore, the effect of excellent hair dyeing property is exhibited.

Particularly preferred is an oxidation hair dye composition which is applied to hair at a temperature of 35 to 45 ℃ and which lasts for 30 minutes or more.

The form of each agent forming the oxidation hair dye composition of the present invention may be any form, and examples thereof include a liquid, a paste, and a gel. The oxidation hair dye composition obtained by mixing the respective agents may be in any form of a liquid, paste, gel or other form having coatability, and may contain a powdery or solid substance in a part of the agents. Alternatively, all the agents may be dissolved in water in the form of powder or solid and then used. If the hair dye composition is in the form of a paste, self-foaming occurs by the redox reaction of the reducing agent comprising iodide, and thus a self-foaming oxidation hair dye composition can be obtained. The self-foaming forms a foam, and thus the hair dressing composition has an excellent hair dressing property.

In addition, the foam or mist may be formed during use. In the case of forming a bubble, an aerosol model container, a non-aerosol model container, a shaking container, or the like may be used. In the case of forming a mist, a nebulizer may be used. When the oxidation hair dye composition of the present invention is prepared into a foam formulation, the effect of improving the foam quality, foaming, etc. is exhibited.

The pH of the oxidation hair dye composition is not particularly limited, but is preferably 8 to 12, and the lower limit is more preferably 9 or more, and the upper limit is more preferably 11 or less. By setting the temperature in this range, the effect of maintaining the temperature of the oxidation hair dye composition at an elevated temperature for a long period of time can be promoted.

Next, each component used in the oxidation hair dye composition of the present invention will be described in detail. The content of each component is, unless otherwise specified, the content of each component in the oxidation hair dye composition after mixing the components.

< oxidizing agent (A) >

The oxidizing agent is a component contained in the agent 2, and may be any one having oxidizing power. The oxidizing agent has an action of oxidizing the oxidation dye to develop color or an action of decomposing melanin in the hair. The substance (B) is a substance having a function of reacting with the reducing agent composed of the iodide (B) to generate heat. Specifically, for example, there may be mentioned: hydrogen peroxide, urea peroxide, melamine peroxide, sodium percarbonate, potassium percarbonate, sodium perborate, potassium perborate, persulfate such as ammonium persulfate, potassium persulfate and sodium persulfate, sodium peroxide, potassium peroxide, magnesium peroxide, barium peroxide, calcium peroxide, strontium peroxide, hydrogen peroxide adduct of sulfate, hydrogen peroxide adduct of phosphate, hydrogen peroxide adduct of pyrophosphate, peracetic acid and its salts, performic acid and its salts, permanganates, bromates, and the like. Of these, hydrogen peroxide is preferred. In addition, persulfate such as ammonium persulfate, potassium persulfate, and sodium persulfate may be contained as the oxidation assistant.

The content of the oxidizing agent in the oxidation hair dye composition is not particularly limited, and is, for example, 0.1 to 15% by mass, with the lower limit being more preferably 1% by mass or more and the upper limit being more preferably 9% by mass or less. When hydrogen peroxide is contained as the oxidizing agent, it is preferable to add ethylene glycol phenyl ether (phenoxyethanol), hydroxyethane diphosphonic acid, phosphoric acid, citric acid, a salt thereof, or the like as a stabilizer for improving the stability.

< iodide (B) >

The iodide is an iodine-containing compound, and for example, there can be mentioned: alkali metal salts of iodides such as potassium iodide, sodium iodide, and lithium iodide, compounds such as hydrogen iodide, cesium iodide, and silver iodide, and iodide-containing extracts such as garlic iodide. Alkali metal salts of iodide are preferred, potassium iodide or sodium iodide is more preferred, and potassium iodide is particularly preferred.

The iodide has an effect of promoting color development of the oxidation dye. Therefore, the oxidation hair dye composition exerts an effect of shortening the hair dyeing treatment time by containing iodide.

The content of the iodide in the oxidation hair dye composition is not particularly limited, but is preferably 0.01 to 5% by mass from the viewpoint of promoting the color development of the oxidation dye. The lower limit is more preferably 0.05% by mass or more, and particularly preferably 0.1% by mass or more. The upper limit is more preferably 3% by mass or less, and particularly preferably 1% by mass or less.

In addition, the iodide has a function of generating heat by reacting with the oxidizing agent. The oxidation-reduction reaction using iodide has a large calorific value, and therefore, the oxidation hair dye composition exhibits an effect of effectively raising the temperature of the oxidation hair dye composition with a small amount. In addition, the temperature of the oxidation hair dye composition after the temperature is increased can be maintained for a long time.

The content of the iodide in the oxidation hair dye composition is not particularly limited, but is preferably 0.05 mass% or more from the viewpoint of increasing the temperature of the oxidation hair dye composition. If the amount is less than 0.05 mass%, the amount of heat generation is small, and the effect of increasing the temperature of the oxidation hair dye composition cannot be exhibited. More preferably 0.1% by mass or more, still more preferably 0.15% by mass or more, and particularly preferably 0.3% by mass or more. On the other hand, the upper limit is preferably 5% by mass or less, more preferably 3% by mass or less, and particularly preferably 1% by mass or less.

From the viewpoint of imparting self-foamability to the oxidation hair dye composition, the content of the iodide in the oxidation hair dye composition is preferably 0.2% by mass or more, and more preferably 0.5% by mass or more. By setting the amount to 0.2% by mass or more, a favorable puff-bud-like oxidation hair dye composition can be obtained.

< C Oxidation dye >

The oxidation dye is a dye that develops color by oxidative polymerization using (a) an oxidizing agent. The oxidation dye includes a dye intermediate that develops color by oxidation of the dye intermediate and a coupler that obtains various hues by combination with the dye intermediate.

Dye intermediates are dye precursors which are predominantly o-or p-phenylenediamines or aminophenols, usually themselves as colorless or weakly colored compounds.

Specifically, it can be exemplified that: (c2) P-aminophenol, o-aminophenol, p-methylaminophenol, p-phenylenediamine, toluene-2,5-diamine (p-tolylenediamine), N-phenyl-p-phenylenediamine, 4,4 '-diaminodiphenylamine, 2-hydroxyethyl-p-phenylenediamine, o-chloro-p-phenylenediamine, 4-amino-m-cresol, 2-amino-4-hydroxyethylaminoanisole, 2,4-diaminophenol and their salts, 2,2' - [ (4-aminophenyl) imino ] diethanol and the like.

The kind of the dye intermediate may be selected from 1 or 2 or more according to the desired color tone of the hair. The content is not particularly limited, and for example, the total content of the dye intermediates in the oxidation hair dye composition is 0.01 to 5% by mass. The lower limit is more preferably 0.05% by mass or more, and particularly preferably 0.1% by mass or more. The upper limit is more preferably 3% by mass or less, and particularly preferably 1% by mass or less.

The dye intermediate preferably contains (c 2) p-aminophenol. By containing the p-aminophenol (c 2), the oxidation hair dye composition can be further increased in temperature by the action of increasing the temperature of the oxidation hair dye composition. The content of p-aminophenol is not particularly limited, and is, for example, 0.001 to 2 mass% in the oxidation hair dye composition. The lower limit is more preferably 0.005% by mass or more, and particularly preferably 0.01% by mass or more. The upper limit is more preferably 1% by mass or less, and particularly preferably 0.5% by mass or less. When the content of p-aminophenol is small, the effect of increasing the temperature of p-aminophenol is not exerted, and when the content of p-aminophenol is large, the temperature of the oxidation hair dye composition may be excessively increased.

The ratio (C2/C) of the content of the (C2) p-aminophenol to the total content of the (C) oxidation dye is not particularly limited, but is preferably 0.001 to 0.1. The lower limit is more preferably 0.005 or more, and particularly preferably 0.01 or more. The upper limit is more preferably 0.08 or less, and particularly preferably 0.05 or less. When C2/C is small, the effect of increasing the temperature of p-aminophenol is not exhibited, and when C2/C is large, the temperature of the oxidation hair dye composition may be excessively increased.

Examples of the coupling agent include mainly meta-diamines, aminophenols, and diphenols, and specifically, the following are exemplified: (c1) M-aminophenol, resorcinol, catechol, pyrogallol, phloroglucinol, gallic acid, hydroquinone, 5-amino-o-cresol, 5- (2-hydroxyethylamino) -2-methylphenol, m-phenylenediamine, 2,4-diaminophenoxyethanol, toluene-3,4-diamine, alpha-naphthol, 2,6-diaminopyridine, diphenylamine, 3,3' -iminodiphenyl, 1,5-dihydroxynaphthalene, tannic acid and their salts, 1-hydroxyethyl-4,5-diaminopyrazole sulfate, and the like.

The kind of the coupling agent may be selected from 1 or 2 or more according to the desired color tone of the hair. The content is not particularly limited, and for example, the total content of the coupling agent in the oxidation hair dye composition is 0.01 to 5% by mass. The lower limit is more preferably 0.05% by mass or more, still more preferably 0.08% by mass or more, and particularly preferably 0.1% by mass or more. The upper limit is more preferably 3% by mass or less, and particularly preferably 1% by mass or less.

The coupling agent is preferably contained in the oxidation hair dye composition in an amount of 0.05% by mass or more of (c 1) m-aminophenol. The present inventors have found that, in an oxidative hair dye composition containing an iodide, various oxidative dyes are screened to solve the problem of the reduction in hair dyeing properties caused by the extension of the hair dyeing treatment time, and as a result, it has been found that, when (c 1) m-aminophenol is contained in an amount of 0.05% by mass or more, the hair dyeing properties are not reduced even if the hair dyeing treatment time is extended. It was also confirmed that the oxidation hair dye composition of the present invention containing (c 1) m-aminophenol in an amount of 0.05% by mass or more has a so-called automatic stopping action in which a certain dyeing property is maintained after a predetermined dyeing treatment time, unlike the action of deepening dyeing of dyeing if the dyeing treatment time is extended, which is the case with the oxidation hair dye composition containing no iodide in the related art. By utilizing this effect, the difference in coloring of hair dye is small even if the hair dyeing treatment time is slightly extended, and thus the hair can be colored in a predetermined color without strictly observing the hair dyeing treatment time.

The content of (c 1) m-aminophenol in the oxidation hair dye composition is preferably 0.05% by mass or more, more preferably 0.08% by mass or more, and particularly preferably 0.1% by mass or more. On the other hand, the upper limit is preferably 5% by mass or less, more preferably 3% by mass or less, and particularly preferably 1% by mass or less.

The content of (C1) m-aminophenol is not particularly limited with respect to the total content (C1/C) of (C) oxidation dye, but is preferably 0.005 to 1. The lower limit is more preferably 0.01 or more, and particularly preferably 0.05 or more. The upper limit is more preferably 0.5 or less, and particularly preferably 0.3 or less.

(C) The total content of the oxidation dye is not particularly limited, but is preferably 0.002 to 10 mass%. The lower limit is more preferably 0.02% by mass or more, and particularly preferably 0.2% by mass or more. The upper limit is more preferably 8% by mass or less, and particularly preferably 6% by mass or less. When the total content of the oxidation dye (excluding p-aminophenol) is large, the effect of suppressing the increase in temperature of the reducing agent composed of iodide is exerted. This effect can be utilized when the temperature of the oxidative hair dye becomes too high, for example.

< other ingredients >

The oxidation hair dye composition of the present invention may contain the following components, if necessary, in addition to the above components (a) to (C).

Examples of the other components include: examples of the inorganic salt include alkali agents, direct dyes, oily components, surfactants, water-soluble polymers, antioxidants such as ascorbic acid and anhydrous sodium sulfite, preservatives such as phenoxyethanol and sodium benzoate, organic solvents such as ethanol, saccharides such as sorbitol and maltose, polyhydric alcohols such as polyethylene glycol and dipropylene glycol, chelating agents such as ethylenediamine, hydroxyethyltriacetic acid trisodium dihydrate and hydroxyethane diphosphonic acid tetrasodium salt solution, inorganic salts such as sodium chloride and sodium carbonate, ammonium sulfate, ammonium nitrate, ammonium acetate, citric acid, tartaric acid, lactic acid, malic acid, succinic acid, fumaric acid, maleic acid, pyrophosphoric acid, gluconic acid, glucuronic acid and ammonium bicarbonate, pH regulators such as hair growth components, plant extracts, crude drug extracts, amino acids and peptides, urea, vitamins, perfumes, and ultraviolet absorbers.

< alkaline agent >

The alkaline agent has effects of swelling hair and promoting penetration of dye or oxidant. As the alkaline agent, for example, there can be exemplified: ammonia, alkanolamines, silicates, carbonates, bicarbonates, orthosilicates, phosphates, basic amino acids, hydroxides, and the like. Specifically, as the alkanolamine, there are exemplified: monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, aminomethylpropanol, isopropylamine and the like, and examples of the silicate include: sodium silicate, potassium silicate and the like, and examples of the carbonate include: sodium carbonate, ammonium carbonate, magnesium carbonate, guanidine carbonate, and the like, and examples of the bicarbonate include: sodium hydrogen carbonate, ammonium hydrogen carbonate, and the like, and examples of the orthosilicate include: sodium orthosilicate, potassium orthosilicate, and the like, and examples of the phosphate include: primary ammonium phosphate, secondary ammonium phosphate, disodium hydrogen phosphate, trisodium phosphate, etc., as basic amino acids, there are exemplified: arginine, lysine, and salts thereof, and the hydroxides include: calcium hydroxide, magnesium hydroxide, and the like. Of these, ammonia and alkanolamines are preferred. The alkaline agent is usually contained in the agent 1.

The content of the alkaline agent in the oxidation hair dye composition is not particularly limited, but is preferably 0.01 to 20% by mass, as a lower limit, more preferably 0.1% by mass or more, and as an upper limit, more preferably 15% by mass or less.

When the content of the alkaline agent contained in 1g of the oxidation hair dye composition is expressed by mol, it is preferably 0.05 to 2mmol/g. The lower limit is more preferably 0.1mmol/g or more, and particularly preferably 0.25mmol/g or more. The upper limit is more preferably 1.5mmol/g or less, and particularly preferably 1mmol/g or less.

< direct dyes >

The direct dye is a compound having a color, and is a dye for dyeing hair by adhering or impregnating hair. For example, there are acid dyes, basic dyes, natural dyes, nitro dyes, HC dyes, disperse dyes, and the like. These direct dyes may be compounded singly or in combination.

As the acid dye, there can be exemplified: red No.2, red No.3, red No. 102, red No. 104 (1), red No. 105 (1), red No. 106, red No. 227, (1) of red No. 230, yellow No.4, yellow No.5, yellow No. 202 (1), yellow No. 202 (2), yellow No. 203, orange No. 205, orange No. 207, orange No. 402, green No.3, green No. 204, green No. 401, violet No. 401, blue No.1, blue No.2, blue No. 202, brown No. 201, black No. 401, and the like.

As the basic dye, there can be exemplified: basic blue 3, basic blue 6, basic blue 7, basic blue 9, basic blue 26, basic blue 41, basic blue 47, basic blue 99, basic brown 4, basic brown 16, basic brown 17, basic green 1, basic green 4, basic orange 1, basic orange 2, basic orange 31, basic red 1, basic red 2, basic red 22, basic red 46, basic red 51, basic red 76, basic red 118, basic violet 1, basic violet 3, basic violet 4, basic violet 10, basic violet 11, basic violet 14, basic violet 16, basic yellow 11, basic yellow 28, basic yellow 57, basic yellow 87, and the like.

As the natural dye, there can be exemplified: gardenia pigment, curcumin, annatto pigment, sodium copper chlorophyllin, capsicum pigment, lac pigment, henna and the like.

As the above nitro dye, there can be exemplified: 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, picric acid, and salts thereof.

As the above HC dye, there can be exemplified: HC blue No.2, HC blue No.5, HC blue No.6, HC blue No.9, HC blue No.10, HC blue No.11, HC blue No.12, HC blue No.13, HC orange No.1, HC orange No.2, HC orange No.3, HC red No.1, HC red No.3, HC red No.7, HC red No.10, HC red No.11, HC red No.13, HC red No.14, HC violet No.1, HC violet No.2, HC yellow No.4, HC yellow No.5, HC yellow No.6, HC yellow No.9, HC yellow No.10, HC yellow No.11, HC yellow No.12, HC yellow No.13, HC yellow No.14, HC yellow No.15, and the like.

As the above-mentioned disperse dye, there can be exemplified: disperse black 9, disperse blue 1, disperse blue 3, disperse blue 7, disperse brown 4, disperse orange 3, disperse red 11, disperse red 15, disperse red 17, disperse violet 1, disperse violet 4, disperse violet 15, and the like.

The content of the direct dye in the oxidation hair dye composition is not particularly limited, but is preferably 0.001 to 10% by mass as a lower limit, more preferably 0.01% by mass or more, and more preferably 3% by mass or less as an upper limit.

< oil component >

The oily component may be exemplified by: (D) Higher alcohols, oils, waxes, hydrocarbons, higher fatty acids, esters, silicone oils, fluorine oils, and the like. From these oily components, 1 or 2 or more kinds can be selected and used. By containing an oily component, the hair dyeing property can be improved, or the feeling of hair (finger passing) can be improved.

< D) higher alcohol >

Examples of the higher alcohol include: cetyl alcohol (cetyl alcohol), stearyl alcohol, cetostearyl alcohol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, eicosanol, behenyl alcohol, dodecanol, tetradecanol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, phytosterols, cholesterol, cholestanol, lanosterol, ergosterol, and the like.

The higher alcohol is contained to promote the high temperature of the oxidation hair dye composition, thereby achieving an effect of improving the hair dyeing property.

The content of the higher alcohol in the oxidation hair dye composition is not particularly limited, and is, for example, 0.01 to 20% by mass. The lower limit is more preferably 0.1% by mass or more, and particularly preferably 1% by mass or more. The upper limit is more preferably 15% by mass or less, and particularly preferably 10% by mass or less.

The oil and fat is triglyceride, i.e. triglyceride of fatty acid and glycerol. For example, there may be mentioned: olive oil, rose hip oil, camellia oil, shea butter, macadamia nut oil, almond oil, tea seed oil, camellia oil, safflower oil, sunflower seed oil, soybean oil, cottonseed oil, sesame oil, beef tallow, cocoa butter, corn oil, groundnut oil, rapeseed oil, rice bran oil, rice germ oil, wheat germ oil, macadamia oil, grape seed oil, avocado oil, carrot oil, castor bean oil, linseed oil, coconut oil, mink oil, egg yolk oil and the like.

The wax is an ester of a higher fatty acid and a higher alcohol. For example, there may be mentioned: beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, spermaceti wax, rice bran wax, sugar cane wax, palm wax, montan wax, cotton wax, bayberry wax, white wax, kapok wax, shellac wax, and the like.

Hydrocarbons are compounds composed of carbon and hydrogen. For example, there may be mentioned: liquid paraffin, microcrystalline wax, vaseline, isoparaffins, ceresin, mineral wax, polyethylene, α -olefin oligomer, polybutene, synthetic squalene, squalane, hydrogenated squalene, limonene, turpentine, etc.

Examples of the higher fatty acid include: lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, lanolin fatty acid, and the like.

Esters are compounds obtained by dehydration reaction of fatty acids with alcohols. For example, there may be mentioned: diisopropyl adipate, 2-hexyldecyl adipate, isopropyl myristate, tetradecyl myristate, hexadecyl octanoate, hexadecyl isooctanoate, isononyl isononanoate, diisopropyl sebacate, isopropyl palmitate, 2-ethylhexyl palmitate, hexadecyl ethylhexanoate, butyl stearate, isohexadecyl isostearate, hexyl laurate, decyl oleate, fatty acids (C10-30) (cholesteryl ester/lanosterol ester, dodecyl lactate, octyl dodecyl lactate, lanolin acetate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, lanolin derivatives, and the like.

Silicone oil is a synthetic polymer in which silicon and oxygen linked by an organic group are linked to each other by chemical bonding. For example, there may be mentioned: dimethylpolysiloxane (INCI name: dimethicone), dimethylpolysiloxane having a hydroxyl terminal group (INCI name: dimethiconol), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, polyether-modified siloxane, high-polymerized siloxane having an average polymerization degree of 650 to 10000, amino-modified siloxane, betaine-modified siloxane, alkyl-modified siloxane, alkoxy-modified siloxane, mercapto-modified siloxane, carboxyl-modified siloxane, fluorine-modified siloxane, and the like.

Among the above, examples of the amino-modified silicone include: aminopropylmethylsiloxane-dimethylsiloxane copolymer (INCI name: aminopropyldimethylsilicone oil), aminoethylaminopropylsiloxane-dimethylsiloxane copolymer (INCI name: ammonia-terminated dimethylsiloxane), aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer (INCI name: trimethylsilyl ammonia-terminated dimethylsiloxane), and the like.

The total content of the oily components in the oxidation hair dye composition is not particularly limited, and is preferably 0.1 to 30% by mass. The lower limit is more preferably 0.5% by mass or more, and particularly preferably 1% by mass or more. The upper limit is more preferably 20% by mass or less, and particularly preferably 10% by mass or less.

< surfactant >

Examples of the surfactant include: nonionic surfactants, cationic surfactants, anionic surfactants, and amphoteric surfactants.

In the following description, POE represents a polyoxyethylene chain, POP represents a polyoxypropylene chain, and the numbers in parentheses after the polyoxyethylene chain and the POP represent the added mole numbers. In addition, the number in parentheses after the alkyl group represents the carbon number of the fatty acid chain.

Examples of the nonionic surfactant include: POE alkyl ethers, POE alkyl phenyl ethers, POE-POP alkyl ethers, POE sorbitan fatty acid esters, POE mono fatty acid esters, POE glycerin fatty acid esters, polyglycerin fatty acid esters, monoglycerol fatty acid esters, sorbitan fatty acid esters, sucrose fatty acid esters, alkyl polyglycosides, and the like. Specific examples of POE alkyl ethers include: POE dodecyl ether, POE hexadecyl ether, POE octadecyl ether, POE docosyl ether, POE lanolin, POE phytosterol and the like.

The content of the nonionic surfactant in the oxidation hair dye composition is not particularly limited, and is preferably 0.001 to 40% by mass. The lower limit is more preferably 0.01% by mass or more, and particularly preferably 0.05% by mass or more. The upper limit is more preferably 30% by mass or less, and particularly preferably 20% by mass or less.

Examples of the cationic surfactant include: alkyl quaternary ammonium salts such as monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, trialkyl quaternary ammonium salts, benzalkonium quaternary ammonium salts, and monoalkylether quaternary ammonium salts, alkylamine salts, fatty amide salts, ester-containing tertiary amine salts, amine salts such as acoville (アーコベル) -type tertiary amine salts, cyclic quaternary ammonium salts such as alkylpyridinium salts and alkylisoquinolinium salts, and phenethylammonium chloride.

The alkyl quaternary ammonium salt is preferable, the monoalkyl quaternary ammonium salt and the dialkyl quaternary ammonium salt are more preferable, and the monoalkyl quaternary ammonium salt is particularly preferable.

Examples of the monoalkyl type quaternary ammonium salt include: dodecyltrimethylammonium chloride, dodecyltrimethylammonium bromide, alkyl chloride (16,18) trimethylammonium, hexadecyltrimethylammonium chloride, hexadecyltrimethylammonium bromide, hexadecyltrimethylammonium saccharin, octadecyltrimethylammonium chloride, octadecyltrimethylammonium bromide, docosyltrimethylammonium chloride, octadecyltrimethylammonium saccharin, alkyl (28) trimethylammonium chloride, dipeoe (2) oleylmethylammonium chloride, dipeoe (octadecyl) methylammonium chloride, POE (1) POP (25) diethylmethylammonium chloride, POP methyldiethylammonium chloride, methacryloyloxyethyltrimethylammonium chloride, docosyltrimethylammonium methylsulfate, and the like. Particularly preferred are octadecyl trimethyl ammonium chloride, alkyl (16,18) trimethyl ammonium chloride, and hexadecyltrimethyl ammonium chloride.

Examples of the dialkyl quaternary ammonium salt include: dialkyl (12-15) dimethylammonium chloride, dialkyl (12-18) dimethylammonium chloride, dialkyl (14-18) dimethylammonium chloride, dicocoyl dimethylammonium chloride, hexacosanyldimethylammonium chloride, octacosyldimethylammonium chloride, isostearyl dodecyldimethylammonium chloride, and the like.

The content of the cationic surfactant in the oxidation hair dye composition is not particularly limited, but is preferably 0.001 to 10% by mass. The lower limit is more preferably 0.01% by mass or more, and particularly preferably 0.05% by mass or more. The upper limit is more preferably 5% by mass or less, and particularly preferably 3% by mass or less.

Examples of the anionic surfactant include: alkyl ether sulfates, POE alkyl ether sulfates, alkyl sulfates, alkenyl ether sulfates, alkenyl sulfates, olefin sulfonates, alkane sulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α -fatty sulfonates, N-acyl amino acid-type surfactants, phosphoric acid mono-or diester-type surfactants, and sulfo esters. The counter ion of the anionic group of these surfactants is not particularly limited, and may be any of sodium ion, potassium ion, and triethanolamine.

More specifically, the following are exemplified: sodium lauryl sulfate, sodium tetradecyl sulfate, potassium lauryl sulfate, ammonium lauryl sulfate, triethanolamine lauryl sulfate, sodium cetyl sulfate, sodium stearyl sulfate, sodium POE lauryl ether sulfate, triethanolamine POE lauryl ether sulfate, POE lauryl ether ammonium sulfate, POE stearyl ether sodium sulfate, sodium stearyl methyl taurate, triethanolamine dodecylbenzene sulfonate, sodium tetradecene sulfonate, sodium lauryl phosphate, POE lauryl ether phosphoric acid and its salts, N-lauroyl glutamate (sodium dodecanoyl glutamate, etc.), N-lauroyl methyl- β -alanate, N-acylglycinate, N-acyl glutamate, lauric acid, myristic acid as a higher fatty acid, and salts of these higher fatty acids, and 1 or 2 or more kinds thereof may be used.

The content of the anionic surfactant in the oxidation hair dye composition is not particularly limited, and is preferably 0.001 to 10% by mass. The lower limit is more preferably 0.01% by mass or more, and particularly preferably 0.05% by mass or more. The upper limit is more preferably 5% by mass or less, and particularly preferably 3% by mass or less.

Examples of the amphoteric surfactant include: amino acid type amphoteric surfactant, and betaine type amphoteric surfactant.

Specific examples of the amino acid type amphoteric surfactant include: glycine-type amphoteric surfactants such as sodium N-lauroyl-N '-carboxymethyl-N' -hydroxyethylethylenediamine (Na lauroamphoacetate), 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolium betaine, sodium undecylhydroxyethylimidazolium betaine, alkyldiaminoethylglycine hydrochloride, sodium N-coconut oil fatty acid ester-N '-carboxyethyl-N' -hydroxyethylethylenediamine, disodium N-coconut oil fatty acid ester-N '-carboxyethoxyethyl-N' -carboxyethylethylenediamine, disodium N-coconut oil fatty acid ester-N '-carboxymethoxyethyl-N' -carboxymethylethylethylenediamine, sodium dodecyldiaminoethylglycinate, and sodium palm oil fatty acid ester-acyl-N-carboxyethyl-N-hydroxyethylethylenediamine; and aminopropionic acid-type amphoteric surfactants such as sodium dodecylaminopropionate, sodium dodecylaminodipropionate, and triethanolamine dodecylaminopropionate.

Specific examples of the betaine amphoteric surfactant include: glycine betaine-type amphoteric surfactants such as cocoanut oil alkyl betaine, dodecyl dimethyl glycine betaine, tetradecyl dimethyl glycine betaine, octadecyl dimethyl betaine sodium, coconut oil fatty acid amidopropyl betaine, palm oil fatty acid amidopropyl betaine, lauramidopropyl betaine, ricinamidopropyl betaine, and octadecyl dihydroxyethyl betaine; and sulfobetaine-type amphoteric surfactants such as dodecylhydroxysulfobetaine.

The content of the amphoteric surfactant in the oxidation hair dye composition is not particularly limited, and is preferably 0.001 to 10% by mass. The lower limit is more preferably 0.01% by mass or more, and particularly preferably 0.05% by mass or more. The upper limit is more preferably 5% by mass or less, and particularly preferably 3% by mass or less.

The total content of all the surfactants in the oxidation hair dye composition is not particularly limited, and is preferably 0.01 to 50 mass%. The lower limit is more preferably 0.05% by mass or more, and particularly preferably 0.1% by mass or more. The upper limit is more preferably 40% by mass or less, and particularly preferably 30% by mass or less.

< Water-soluble Polymer >

Examples of the water-soluble polymer include: cationic polymer compounds, anionic polymer compounds, amphoteric polymer compounds, and nonionic polymer compounds. The effect of improving the hair dyeing property is observed by containing the water-soluble polymer. In addition, when self-foaming is performed by a redox reaction between a reducing agent composed of an iodide and an oxidizing agent, if a water-soluble polymer is contained, good cells can be formed.

The cationic polymer compound is not limited in kind, and is a water-soluble compound containing an amino group or an ammonium group bonded to a polymer chain, or containing at least a dimethyldiallylammonium halide as a constituent unit, and examples thereof include: cationized cellulose derivatives, cationized starch, cationized guar gum derivatives, diallyl quaternary ammonium salt polymers, diallyl quaternary ammonium salt-acrylamide copolymers, and quaternized polyvinylpyrrolidone derivatives, and the like.

Examples of commercially available products of the cationized cellulose derivative include: "レオガード G", "レオガード GP" by Lion corporation, polymers JR-125, JR-400, JR-30M, LR-400, LR-30M from Union carbide, and the like. As other cationized cellulose derivatives, hydroxyethyl cellulose dimethyldiallylammonium chloride may be mentioned, and as commercially available products, "セルコート H-100" and "セルコート L-200" from NATIONAL STARCH & CHEMICAL are mentioned. The cationized guar gum derivatives are described in, for example, japanese Kokoku publication Sho 58-35640, japanese Kokoku publication Sho 60-46158 and Japanese Kokai publication Sho 58-53996, and are commercially available as JAGUAR C-13S, JAGUAR C-14S, JAGUAR C-17, JAGUAR C-210, JAGUAR C-162 and HICARE1000, all of the companies RHONE-poulenC. Examples of commercially available products of diallyl quaternary ammonium salt polymers include "マーコート" (dimethylmethylenepyridinium chloride) manufactured by CALCON. Commercially available cationic diallyl quaternary ammonium salt-acrylamide copolymers include "マーコート" and "マーコート" available from CALGON, for example. The quaternary polyvinylpyrrolidone derivative is preferably a compound having a molecular weight of 1 to 200 million, and commercially available products include "ガフコート", "ガフコート", "ガフコート N" of ISP japan ltd.

The kind of the anionic polymer compound is not limited, and examples thereof include: acrylic acid-acrylamide-ethyl acrylate copolymer, acrylic acid-acrylamide-ethyl acrylate copolymer potassium salt solution, alkyl acrylate-alkyl methacrylate-diacetone acrylamide-methacrylic acid copolymer solution, acrylic acid-alkyl methacrylate copolymer, acrylic resin alkanolamine solution, carboxyvinyl polymer, hydroxypropyl acrylate, butylaminoethyl methacrylate, acrylic acid octylamide copolymer, vinyl acetate-crotonic acid-vinyl neodecanate copolymer, vinyl acetate-crotonic acid-vinyl propionate copolymer, methyl vinyl ether-monobutyl maleate copolymer, and the like.

The kind of the amphoteric polymer compound is not limited, and examples thereof include: n-methacryloylethyl N, N-dimethylammonium α -N-methylcarboxylbetaine-butyl methacrylate copolymer (trade name: "ユカフォーマー AM-75", manufactured by Mitsubishi chemical corporation), hydroxypropyl acrylate-butylaminoethyl methacrylate-octylamide acrylate copolymer (trade name: "アンフォマー -4910", manufactured by NATIONAL STARCH Co., ltd.), dimethyldiallylammonium chloride-acrylic acid copolymer (trade name: "マーコート", "マーコート"; manufactured by GON Co., ltd.), and a dimethyldiallylammonium chloride-acrylamide-acrylic acid terpolymer (trade name: "マーコート プ ラ ス 3330", "マーコート プ ラ ス z 5754"; manufactured by CALCON Co., ltd.), acrylic acid-methyl acrylate-methacrylamidopropyl trimethylammonium chloride copolymer (trade name: "マーコート"; manufactured by CALCON Co., ltd.), and the like.

The kind of the nonionic polymer compound is not limited, and examples thereof include natural, semisynthetic, and synthetic compounds. Examples of the natural nonionic polymer compound include cellulose, guar gum, agar, starch, hydrolyzed starch, and dextran. Further, examples of the semi-synthetic nonionic polymer compound include: methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl dextran, carboxymethyl chitin, and the like. Further, examples of the synthetic nonionic polymer compound include: polyethylacrylate, polyacrylamide, polyethylene glycol, polypropylene glycol, polyoxyethylene-polyoxypropylene copolymer, polyvinylpyrrolidone, and the like.

The content of the water-soluble polymer in the oxidation hair dye composition is not particularly limited, but is preferably 0.01 to 20 mass%. The lower limit is more preferably 0.1% by mass or more, and particularly preferably 1% by mass or more. The upper limit is more preferably 10% by mass or less, and particularly preferably 5% by mass or less.

[ method of Using Oxidation Hair dye composition ]

The method for using the oxidation hair dye composition of the present invention to solve the problem 1 is characterized in that the oxidation hair dye composition is applied to hair and then left for 30 minutes or longer. Herein, "after being applied to hair" means "after the step of applying the oxidation hair dye composition to hair is finished". According to the method of using the oxidation hair dye composition, the difference of dyeing caused by the length of dyeing treatment time is reduced after 30 minutes, so that dyeing can be performed to the same depth even if the dyeing treatment time is prolonged.

The method of using the oxidation hair dye composition of the present invention for solving the 2 nd problem is a method comprising the following steps 1 to 4.

Step 1: an oxidation hair dye composition is prepared by mixing (A) an oxidizing agent, (B) an iodide, and (C) an oxidation dye.

Step 2: the oxidation hair dye composition is heated by self-heating.

And step 3: the heated oxidation hair dye composition is applied to the hair.

And 4, step 4: after the oxidation hair dye composition is applied to the hair, the hair is left for 10 minutes or more.

The term "after application to hair" in step 4 means "after completion of the step of applying the oxidation hair dye composition to hair".

In step 1, the operation of mixing the agents containing the respective components may be carried out by any method, and examples thereof include: a method of putting each agent into a container and shaking the container for mixing; a method of mixing by a stirring bar, a stirring paddle, or the like; a method of mixing by a coating tool such as a brush.

In the step 3, the operation of applying the oxidation hair dye composition to the hair may be carried out by any method, for example, the following methods are included: a method of applying to hair by a brush, comb, or like application tool; a method of applying to hair with a gloved hand, and the like. From the viewpoint of suppressing the occurrence of uneven application, a method of applying the hair with bristles is preferable, and from the viewpoint of the easiness of the application operation, a step of applying the hair with a glove-worn hand is preferable.

In addition, the temperature of the oxidation hair dye composition when applied to the hair in step 3 is preferably 28 to 50 ℃. The lower limit is more preferably 30 ℃ or higher, and particularly preferably 35 ℃ or higher. The upper limit is more preferably 48 ℃ or lower, and particularly preferably 45 ℃ or lower.

The temperature of the oxidation hair dye composition in the step 4 is preferably 28 to 50 ℃. The lower limit is more preferably 30 ℃ or higher, and particularly preferably 35 ℃ or higher. The upper limit is more preferably 48 ℃ or lower, and particularly preferably 45 ℃ or lower. Further, the temperature is preferably maintained for 30 minutes or more.

Examples

(embodiment 1)

The oxidation hair dye composition of the present invention for solving the 1 st problem will be specifically described by the following example 1, but the technical scope of the present invention is not limited to these examples.

[ preparation of Oxidation Hair dye composition of example 1]

A 2-part oxidation hair dye composition of the 2-part formula was prepared, which was composed of the 1 st part having the composition shown in tables 1 and 2, and the 2 nd part having the composition shown below.

< agent 2 >

[ evaluation method ]

< Hair dyeing Property (1) >

(Hair dyeing method)

The agent 1 shown in tables 1 and 2 was mixed with the agent 2 at 1:1 to prepare an oxidation hair dye composition. The oxidation hair dye composition (bath ratio 1:1), the hair strand left at 30 ℃ for 40 minutes (hair dyeing treatment time 40 minutes), and the hair strand left at 30 ℃ for 60 minutes (hair dyeing treatment time 60 minutes) were applied to a white hair strand. After each hair switch treated for a predetermined hair dyeing treatment time is washed with water, the hair is washed with a shampoo, and the oxidation hair dye composition is rinsed. Next, the conditioner is applied to each strand. Rinsing each hair strand, rinsing off the conditioner, wiping off the moisture of each hair strand with a towel, and drying with a blower.

(evaluation method of Hair dyeing Property (1))

As described above, the shade of the colored hair was visually determined with respect to the hair bundle after the hair dyeing treatment. The hair dyeing treatment time of 40 minutes in example 1-1 was set to "0" and the hair was compared with the coloring shade and evaluated according to the following criteria.

+5: the coloring is very deep compared to the blank.

+4: the coloring is slightly deeper than +3 compared to the blank.

+3: the coloring is deep compared to the blank.

+2: the coloring is slightly deeper than +1 compared to the blank.

+1: the coloring was slightly darker than the blank.

-1: slightly lighter than blank.

-2: the coloring was slightly lighter than-1 compared to the blank.

-3: the coloring is light compared to the blank.

-4: the coloring was slightly shallower than-3 compared to the blank.

-5: the coloring is extremely shallow compared to the blank.

In the examples and comparative examples, the difference between the coloring depth of the hair-dyeing treatment time of 40 minutes and the hair-dyeing treatment time of 60 minutes (absolute value of "score of hair-dyeing treatment time of 60 minutes-score of hair-dyeing treatment time of 40 minutes") was calculated, and the case where the difference was "0" was "evaluation ×," 1 "was" evaluation ∘ ", and" 2 "was" evaluation Δ ", and" 3 or more "was" evaluation x ".

The evaluation results are shown in the lower stages of tables 1 and 2.

[ Table 1]

TABLE 1

As can be seen from table 1, in examples 1-1 to 1-3, since (c 1) m-aminophenol in an amount of 0.05 mass% or more and (B) potassium iodide were contained in the oxidation hair dye composition, there was no difference in the coloring depth between the hair dyeing treatment time of 40 minutes and 60 minutes, and an effect of showing a certain hair dyeing property after a predetermined hair dyeing treatment time was observed. On the other hand, in comparative examples 1-2 and 1-3, since the content of (c 1) m-aminophenol was less than 0.05 mass%, the colored color became lighter as the time of the hair dyeing treatment elapsed.

In comparative example 1-1, since potassium iodide (B) was not contained, the dyeing was darker as the hair dyeing treatment time elapsed.

As shown in examples 1-2 and 1-3, even when the contents of the coupling agent other than m-aminophenol (c 1) and the dye intermediate were reduced, the effect of exhibiting a certain dyeing property after the predetermined dyeing treatment time was observed, as in example 1-1. That is, this effect can be said to be a specific action effect of (c 1) m-aminophenol.

[ Table 2]

TABLE 2

As is clear from examples 1-1, 1-4, and 1-5 in Table 2, the content of iodide (B) in the oxidation hair dye composition was 0.05% by weight or more, and excellent effects were observed.

Further, as is clear from examples 1-1, 1-6 and 1-7 in Table 2, the ratio (C1/C) of the content of (C1) m-aminophenol to the total content of (C) the oxidation dye was 0.05 or more, and excellent effects were observed.

Further, as is clear from examples 1-1, 1-8, and 1-9 in Table 2, when the content of the alkali agent is large, an excellent effect is observed, and when the content of the alkali agent in the oxidation hair dye composition is 0.3 mmol/g or more, a particularly excellent effect is observed. In the table (, the minor ingredients) indicate alkaline agents.

(embodiment 2)

The oxidation hair dye composition of the present invention for solving the problem of the 2 nd object will be specifically described by the following example 2, but the technical scope of the present invention is not limited to these examples.

[ preparation of Oxidation Hair dye composition of example 2]

A 2-part type oxidation hair dye composition consisting of the 1 st part having the composition shown in the following tables 3 to 5 and the 2 nd part having the composition shown below was prepared.

< agent 2 >

[ evaluation method ]

< temperature Change >

The 1 st and 2 nd agents shown in tables 3 to 5 were placed in a 25 ℃ thermostatic bath and were adjusted to 25 ℃.

Then, make

The temperature-adjusted 1 st agent (10 g) was mixed with the 2 nd agent (10 g) with bristles to prepare an oxidation hair dye composition (20 g). After the mixing, the oxidation hair dye composition was placed in a thermostatic bath at 25 ℃, and the temperature of the oxidation hair dye composition was measured after 10 minutes, 20 minutes, and 30 minutes of the mixing.

The average value of the temperature at each time was calculated, and the difference between the average value and the temperature (25 ℃) before mixing was obtained, and the difference was defined as the rise temperature.

The temperature and the rising temperature at each time were evaluated for temperature change based on the following criteria. The evaluation results are shown in the following tables 3 to 5.

Evaluation 5: the temperature at each time is 28 ℃ or higher, and the rise temperature is 5 ℃ or higher.

Evaluation 4: the temperature at each time is 27 ℃ or higher, and the rise temperature is 2.5 ℃ or higher.

Evaluation 3: the temperature at each time is all 26 ℃ or higher, and the rise temperature is 1 ℃ or higher.

Evaluation 2: the temperature at any time is less than 26 ℃ and the rise temperature is 1 ℃ or higher.

Evaluation 1: the rising temperature is less than 1 ℃.

< Hair dyeing Property (2) >

(Hair dyeing method)

The agent 1 shown in tables 3 to 5 was mixed with the above agent 2 at 1:1 to prepare an oxidation hair dye composition. The oxidation hair dye composition was used to perform a hair dyeing treatment on white hair strands (bath ratio 1:1, hair dyeing treatment time 30 minutes). After the hair dyeing treatment, each strand was washed with water, and then washed with shampoo to wash out the oxidation hair dye composition. Next, the conditioner is applied to each strand. Rinsing each hair strand, rinsing off the hair conditioner, wiping the strands with a towel, and drying with a hair dryer.

(evaluation method of Hair dyeing Property (2))

As described above, the hair dyeing property of the hair bundle after the hair dyeing treatment was evaluated by the following criteria. The evaluation results are shown in the lower stage of table 5.

Evaluation 3: very good hair dyeing state.

Evaluation 2: good hair dyeing state.

Evaluation 1: the hair dyeing state is poor.

[ Table 3]

TABLE 3

As is apparent from Table 3, in examples 2-1 to 2-4, since (B) potassium iodide was contained in an amount of 0.05% by mass or more in the oxidation hair dye composition, an excellent effect was observed for the high temperature of the oxidation hair dye composition. When example 2-1 was compared with comparative example 2-2, the temperature change was evaluated as "5" in example 2-1 by including 0.2 mass% of (B) potassium iodide in the oxidation hair dye composition, and was evaluated as "3" in comparative example 2-2 in which the same amount of sodium sulfite was added. That is, potassium iodide has a higher calorific value than sodium sulfite, and is confirmed to have an excellent effect of increasing the temperature. In example 2-1, the temperature increased after 10 minutes, while in comparative example 2-2, the temperature decreased after 10 minutes. That is, the effect of potassium iodide maintaining a high temperature for a long time was also observed.

Further, the oxidation hair dye composition of example 2-1 containing potassium iodide was superior in hair dyeing property to the oxidation hair dye composition of comparative example 2-2 containing sodium sulfite.

In addition, when comparing example 2-2 with comparative example 2-2, in comparative example 2-2, the oxidation hair dye composition contained 0.2 mass% of sodium sulfite, whereas in example 2-2, although (B) contained only 0.05 mass% of potassium iodide, the evaluation of the temperature change was "3" in all cases. That is, it can be said that the content of the reducing agent can be reduced by using potassium iodide.

[ Table 4]

TABLE 4

In examples 2 to 5 of table 4, oxidation hair dye compositions having an increased content of (C) oxidation dye excluding p-aminophenol were prepared, relative to the formulation of example 2 to 1. As a result, in examples 2 to 5, the evaluation of the temperature change reached "3". That is, if the content of the oxidation dye (C) is reduced, it is confirmed that the effect of increasing the temperature of potassium iodide (B) is improved.

On the other hand, in examples 2 to 6, (C) p-aminophenol alone was added to the oxidation dye in (C) to prepare an oxidation hair dye composition, in comparison with the formulations of examples 2 to 4. As a result, in examples 2 to 6, the temperature at each time was higher than that in examples 2 to 4. That is, if (c 2) p-aminophenol is added, the effect of promoting the increase in temperature of (B) potassium iodide can be confirmed.

In examples 2 to 7, lactic acid was added to the formulation of examples 2 to 6 to adjust the pH of the oxidation hair dye composition to 8.6. As a result, in examples 2 to 7, the temperature after 10 minutes was higher than that in examples 2 to 6, but was lower than that in examples 2 to 6, and after 20 minutes, the temperature reached a lower temperature than that in examples 2 to 6. That is, the effect of promoting the high temperature maintenance of (B) potassium iodide can be confirmed by adjusting the pH of the oxidation hair dye composition to 9 or more.

[ Table 5]

TABLE 5

In examples 2 to 8 of Table 5, (D) a higher alcohol-reduced oxidation hair dye composition was prepared, relative to the formulation of example 2 to 1. As a result, in examples 2 to 8, the evaluation of the temperature change reached "4". Further, the evaluation results of the hair-dyeing property were "3" in example 2-1, and "2" in example 2-8. That is, the effect of increasing the temperature of potassium iodide (B) is promoted by adding a higher alcohol, and it can be said that the hair dyeing property is improved.

In addition, in examples 2 to 9, oxidation hair dye compositions not including water-soluble polymers were prepared with respect to the formulation of example 2 to 1. As a result, in examples 2 to 9, the evaluation of the temperature change was the same as that in example 2 to 1, but the evaluation of the hair dyeing property was "2". That is, the hair dyeing property is improved by adding a water-soluble polymer.

Industrial applicability

The oxidation hair dye composition can be used as a hair dye for dyeing human hair, beard, eyebrow, leg hair and other body hair. In addition, the dye can also be used for dyeing body hair of animals such as pets.

The oxidation hair dye composition of the present invention can be used for hair dyes for coloring in beauty parlors, barbershops and the like, and hair dyes for self-coloring.

The method of using the oxidation hair dye composition of the present invention can be used for hair dyeing treatment in beauty salons, hair dressing shops, and the like, and for autonomous coloring.

Claims (3)

1. An oxidation hair dye composition of a multi-agent type comprising (A) hydrogen peroxide, (B) an iodide, (C) an oxidation dye, wherein the iodide content of (B) is 0.05% by mass or more, the oxidation hair dye composition further comprises 2 or more kinds of oil components and a water-soluble polymer, the oil components comprise (D) a higher alcohol, the oxidation hair dye composition is capable of self-heating, and the oxidation hair dye composition has a pH of 9 to 12.

2. The oxidation hair dye composition according to claim 1, wherein the (C) oxidation dye contains (C2) p-aminophenol.

3. A method for using the oxidation hair dye composition according to claim 1, which comprises the steps of,

step 1: mixing the hydrogen peroxide (A), the iodide (B), the oxidation dye (C), the oil component containing a higher alcohol (D), and the water-soluble polymer to prepare an oxidation hair dye composition;

step 2: heating the oxidation hair dye composition by self-heating;

and step 3: applying the heated oxidation hair dye composition to hair;

and 4, step 4: the oxidation hair dye composition is applied to hair and then left for 10 minutes or more.