JP7556517B2 - Oxidative hair dye or bleach composition - Google Patents

Description

The present invention relates to an oxidative hair dye or bleach composition. More specifically, the present invention relates to an oxidative hair dye or bleach composition that includes a first agent composition containing an alkaline agent and a second agent composition containing an oxidizing agent, and that is not affected in terms of ejection from a container and spreadability on hair when stored at low temperatures compared to when stored at room temperature.

With the rise in fashion consciousness in recent years, hair coloring agents, which allow you to easily change your hair color, are accepted by many people, both men and women. There are various types of hair coloring agents, such as permanent hair dyes (oxidative hair dyes and non-oxidative hair dyes), semi-permanent hair dyes (color treatments and hair manicures), bleaches and temporary coloring agents, and they are used according to the needs of each person. Among them, oxidative hair dyes and bleaches have excellent hair dyeing and bleaching effects, and because of these characteristics, they are currently used by many people.

As oxidation hair dyes and bleaches, two-component systems consisting of a first-component composition containing an alkaline agent, with or without an oxidation dye, and a second-component composition containing an oxidizing agent such as hydrogen peroxide, are widely used. These include a method in which the first and second-component compositions are mixed in advance in a tray or bottle-like container just before use and then applied to the hair, and a method in which they are mixed on the hair using a brush or the like. In either method of use, good spreadability on the hair is required from the standpoint of ease of use and uniform dyeing, and several oxidation hair dye or bleach compositions have been proposed to date (Patent Document 1 and Patent Document 2).

JP 2005-247742 A JP 2018-188397 A

The oxidative hair dye or bleach composition can be obtained by mixing the first and second agent compositions in any ratio, but since the alkaline agent and the oxidizing agent undergo an oxidation-reduction reaction simultaneously upon mixing, the first and second agent compositions are stored separately in various containers (polyethylene containers, aluminum tube containers, polyethylene tube containers, aerosol containers, pouch containers, etc.) until immediately before use. Therefore, the viscosity of the first and second agent compositions is appropriately set, taking into consideration the spreadability on the hair and the ejection ability from the container. In the case of an emulsion composition, a higher alcohol having 12 to 24 carbon atoms is often used to adjust the viscosity, and the higher alcohol also has the effect of increasing the emulsion stability.

When air conditioners and heaters are in use, the general room temperature is about 15°C to 25°C (meaning normal temperature in the present invention). However, when heating equipment is not used in winter or in cold regions, the room temperature of a warehouse may drop to about 0°C to 10°C (meaning low temperature in the present invention), and the first agent composition and the second agent composition may be stored for long periods in such environments.

When the first and second agent compositions are emulsion compositions, they contain a higher alcohol having 12 to 24 carbon atoms from the viewpoints of viscosity adjustment and emulsion stability, as described above. However, crystallization of higher alcohols having 12 to 24 carbon atoms is promoted in low-temperature environments, causing the viscosity of the emulsion composition to increase over time, which results in a decrease in ejection properties from the container (in the case of an aerosol container, this also includes the ejection properties of the first and second agent compositions simultaneously).

In addition, the oxidative hair dye or bleach composition obtained by mixing the first agent composition and the second agent composition, whose viscosity has increased during storage at low temperatures, may have reduced spreadability on hair compared to when stored at room temperature, which may result in reduced dye uniformity, etc.

Therefore, there is a demand for an oxidative hair dye or bleach composition that exhibits minimal change in viscosity even when stored at low temperatures and that does not affect the ease of ejection from the container or spreadability on the hair.

However, in all of the patent documents listed in the prior art literature, the spreadability on hair at room temperature was examined, but the ejection ability from the container and spreadability on hair when stored at low temperatures were not taken into consideration.

The present invention has been made in consideration of the above problems, and aims to provide an oxidative hair dye or bleach composition that includes a first agent composition containing an alkaline agent and a second agent composition containing an oxidizing agent, and that is not affected in terms of ejection from a container and spreadability on hair when stored at low temperatures compared to when stored at room temperature.

The present inventors have discovered that the above-mentioned problems can be solved by an oxidative hair dye or bleach composition comprising a first agent composition containing an alkaline agent and a second agent composition containing an oxidizing agent, in which both the first agent composition and the second agent composition contain (A) a polyoxyethylene alkyl ether type nonionic surfactant in which the number of moles of ethylene oxide added is 1, and (B) a nonionic surfactant other than the component (A), and have thus completed the present invention.

That is, the present invention provides an oxidative hair dye or bleach composition comprising a first agent composition containing an alkaline agent and a second agent composition containing an oxidizing agent,
Both the first agent composition and the second agent composition are
The present invention provides an oxidative hair dye or bleach composition, characterized by containing (A) a polyoxyethylene alkyl ether type nonionic surfactant in which the number of moles of ethylene oxide added is 1, and (B) a nonionic surfactant other than the component (A).

The oxidative hair dye or bleach composition of the present invention is an oxidative hair dye or bleach composition that contains a first agent composition containing an alkaline agent and a second agent composition containing an oxidizing agent, and when stored at low temperatures, there is no effect on the ejection properties from the container and on the spreadability on the hair compared to when stored at room temperature.

The present invention will be described in detail below. Note that all units indicating content are mass% unless otherwise specified.

In this invention, normal temperature means approximately 15°C to 25°C, and low temperature means approximately 0°C to 10°C.

In the present invention, the dischargeability from a container specifically means the ease with which the first agent composition or the second agent composition can be discharged from the container. For example, it means the ease with which the first agent composition or the second agent composition can be discharged from an aluminum tube container, the ease with which the first agent composition or the second agent composition can be discharged from a pouch container, and in the case of an aerosol container, the amount of each of the first agent composition and the second agent composition discharged in a certain period of time, the ability to simultaneously discharge the first agent composition and the second agent composition, etc.

The first agent composition of the present invention will be described.

The first agent composition of the present invention contains (A) a polyoxyethylene alkyl ether type nonionic surfactant in which the number of moles of ethylene oxide added is 1, from the viewpoint of ejection from the container during low-temperature storage.

The component (A) used in the first agent composition of the present invention is not particularly limited, but may be, for example, polyoxyethylene (hereinafter referred to as POE) (1) caprylyl ether, POE (1) undecyl ether, POE (1) lauryl ether, POE (1) tridecyl ether, POE (1) myristyl ether, POE (1) pentadecyl ether, POE (1) cetyl ether, POE (1) palmitoyl ether, POE (1) heptadecyl ether, POE (1) stearyl ether, POE (1) ethyl ... Examples of such ethers include allyl ether, POE(1) isostearyl ether, POE(1) oleyl ether, POE(1) linoleyl ether, POE(1) nonadecyl ether, POE(1) arachidyl ether, POE(1) henicosyl ether, POE(1) behenyl ether, POE(1) erucyl ether, POE(1) lignoceryl ether, POE(1) ceryl ether, and POE(1) montanyl ether, and these may contain one or more of these. Among these, POE(1) cetyl ether, POE(1) stearyl ether, and POE(1) behenyl ether are preferred from the viewpoint of ejection from the container during low-temperature storage. The number in parentheses after POE indicates the number of moles of ethylene oxide added.

The content of the (A) component used in the first agent composition in the present invention is not particularly limited, but is preferably 1 to 25%. If the content of the (A) component is less than 1%, there is a risk that emulsion stability and mixability with the second agent composition may decrease. Furthermore, if the content of the (A) component is more than 25%, there is a risk that mixability with the second agent composition may decrease.

The first agent composition of the present invention contains (B) a nonionic surfactant other than the component (A) from the viewpoint of ejection from the container during low-temperature storage.

The component (B) used in the first agent composition of the present invention is not particularly limited, but examples thereof include POE alkyl ethers other than the component (A), POE polyoxypropylene (hereinafter referred to as POP) alkyl ethers, glycerin fatty acid esters, polyglycerin fatty acid esters, POE glycerin fatty acid esters, sorbitan fatty acid esters, POE sorbitan fatty acid esters, POE sorbit fatty acid esters, POE hydrogenated castor oil, POE phytosterol, polyethylene glycol fatty acid esters, etc., and these may contain one or more types.

Specific examples of POE alkyl ethers other than component (A) used in the first agent composition of the present invention include POE (5) decyl ether, POE (6) decyl ether, POE (2) lauryl ether, POE (3) lauryl ether, POE (4) lauryl ether, POE (5) lauryl ether, POE (7) lauryl ether, POE (8) lauryl ether, POE (9) lauryl ether, POE (12) lauryl ether, POE (15) lauryl ether, POE (19) lauryl ether, POE (21) lauryl ether, POE (25) lauryl ether, and POE (30) lauryl ether. POE(40) lauryl ether, POE(3) tridecyl ether, POE(5) tridecyl ether, POE(7) tridecyl ether, POE(8) tridecyl ether, POE(9) tridecyl ether, POE(10) tridecyl ether, POE(12) tridecyl ether, POE(15) tridecyl ether, POE(20) tridecyl ether, POE(2) cetyl ether, POE(5) cetyl ether, POE(7) cetyl ether, POE(8) cetyl ether, POE(10) cetyl ether, POE(13) cetyl ether, POE(15) cetyl ether, POE(20) cetyl ether ethyl ether, POE(23) cetyl ether, POE(25) cetyl ether, POE(30) cetyl ether, POE(40) cetyl ether, POE(150) cetyl ether, POE(2) stearyl ether, POE(3) stearyl ether, POE(4) stearyl ether, POE(5) stearyl ether, POE(7) stearyl ether, POE(10) stearyl ether, POE(11) stearyl ether, POE(15) stearyl ether, POE(20) stearyl ether, POE(30) stearyl ether, POE(40) stearyl ether, POE(50) stearyl ether POE(100) stearyl ether, POE(8) isostearyl ether, POE(12) isostearyl ether, POE(16) isostearyl ether, POE(2) oleyl ether, POE(5) oleyl ether, POE(7) oleyl ether, POE(9) oleyl ether, POE(10) oleyl ether, POE(15) oleyl ether, POE(20) oleyl ether, POE(50) oleyl ether, POE(5) behenyl ether, POE(10) behenyl ether, POE(20) behenyl ether, POE(30) behenyl ether, etc.

Specific examples of the POEPOP alkyl ether used in the first agent composition of the present invention include POE(7)POP(2) decyl ether, POE(10)POP(2) decyl ether, POE(1)POP(4) cetyl ether, POE(10)POP(4) cetyl ether, POE(20)POP(4) cetyl ether, POE(20)POP(8) cetyl ether, POE(30)POP(4) stearyl ether, POE(12)POP(6) decyltetradecyl ether, POE(20)POP(6) decyltetradecyl ether, and POE(30)POP(6) decyltetradecyl ether. The number in parentheses after POP indicates the number of moles of propylene oxide added.

Specific examples of the glycerin fatty acid ester used in the first agent composition of the present invention include glyceryl monoundecylenate, glyceryl monomyristate, glyceryl monostearate, glyceryl monoisostearate, glyceryl monooleate, and glyceryl distearate.

Specific examples of the polyglycerin fatty acid ester used in the first agent composition of the present invention include polyglyceryl-4 monolaurate, polyglyceryl-6 monolaurate, polyglyceryl-10 monolaurate, polyglyceryl-10 monomyristate, polyglyceryl-2 monostearate, polyglyceryl-4 monostearate, polyglyceryl-6 monostearate, polyglyceryl-10 monostearate, polyglyceryl-2 monoisostearate, polyglyceryl-10 monoisostearate, polyglyceryl-10 distearate, and polyglyceryl tristearate. Examples include polyglyceryl-10, polyglyceryl-2 triisostearate, polyglyceryl-2 monooleate, polyglyceryl-4 monooleate, polyglyceryl-10 monooleate, polyglyceryl-6 dioleate, polyglyceryl-10 trioleate, polyglyceryl-10 pentaoleate, polyglyceryl-6 polyricinoleate, polyglyceryl-10 pentastearate, polyglyceryl-10 pentahydroxystearate, polyglyceryl-10 pentaisostearate, polyglyceryl-10 pentaoleate, and polyglyceryl-10 decaoleate. The number after polyglyceryl indicates the number of polymerizations of glycerin.

Specific examples of the POE glycerin fatty acid ester used in the first agent composition of the present invention include POE(5) glyceryl monostearate, POE(15) glyceryl monostearate, POE(5) glyceryl monoisostearate, POE(8) glyceryl monoisostearate, POE(10) glyceryl monoisostearate, POE(20) glyceryl monoisostearate, POE(10) glyceryl triisostearate, POE(15) glyceryl triisostearate, POE(20) glyceryl triisostearate, POE(5) glyceryl monooleate, and POE(15) glyceryl monooleate.

Specific examples of the sorbitan fatty acid ester used in the first agent composition of the present invention include sorbitan coconut oil fatty acid, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquistearate, sorbitan tristearate, sorbitan monoisostearate, sorbitan sesquiisostearate, sorbitan monooleate, sorbitan sesquioleate, and sorbitan trioleate.

Specific examples of the POE sorbitan fatty acid ester used in the first agent composition of the present invention include POE (20) sorbitan coconut oil fatty acid, POE (20) sorbitan monopalmitate, POE (6) sorbitan monostearate, POE (20) sorbitan monostearate, POE (20) sorbitan isostearate, POE (20) sorbitan tristearate, POE (6) sorbitan monooleate, POE (20) sorbitan monooleate, and POE (20) sorbitan trioleate.

Specific examples of the POE sorbitol fatty acid ester used in the first agent composition of the present invention include POE (6) sorbitol monolaurate, POE (60) sorbitol tetrastearate, POE (30) sorbitol tetraisostearate, POE (6) sorbitol tetraoleate, POE (30) sorbitol tetraoleate, POE (40) sorbitol tetraoleate, and POE (60) sorbitol tetraoleate.

Specific examples of the POE hydrogenated castor oil used in the first agent composition of the present invention include POE (5) hydrogenated castor oil, POE (10) hydrogenated castor oil, POE (20) hydrogenated castor oil, POE (30) hydrogenated castor oil, POE (40) hydrogenated castor oil, POE (50) hydrogenated castor oil, POE (60) hydrogenated castor oil, POE (80) hydrogenated castor oil, and POE (100) hydrogenated castor oil.

Specific examples of the POE phytosterol used in the first agent composition of the present invention include POE (5) phytosterol, POE (10) phytosterol, POE (20) phytosterol, and POE (30) phytosterol.

Specific examples of the polyethylene glycol fatty acid ester used in the first agent composition of the present invention include POE(9) monolaurate, POE(10) monolaurate, POE(6) monostearate, POE(9) monostearate, POE(10) monostearate, POE(23) monostearate, POE(25) monostearate, POE(40) monostearate, and POE(45) monostearate. Examples of such esters include POE(55) monostearate, POE(150) distearate, POE(250) distearate, POE(8) diisostearate, POE(5) monooleate, POE(6) monooleate, POE(9) monooleate, POE(10) monooleate, POE(14) monooleate, and POE(16) monooleate.

The content of the (B) component used in the first agent composition of the present invention is not particularly limited, but is preferably 0.15 to 13.5%. If the content of the (B) component is less than 0.15% or if the content of the (B) component is more than 13.5%, there is a risk of reduced emulsion stability.

The first agent composition of the present invention may contain an oxidation dye from the viewpoint of hair dyeing properties.

The oxidative dye used in the first agent composition of the present invention is not particularly limited, but examples include paraphenylenediamine, toluene-2,5-diamine, orthoaminophenol, paraaminophenol, metaaminophenol, 5-aminoorthocresol, 2,6-diaminopyridine, 2,4-diaminophenoxyethanol, 1-naphthol, resorcin and salts thereof, and those listed in the "Standards for Quasi-Drug Ingredients 2006 Integrated Edition" (published November 2013, Yakuji Nipposha) can also be used as appropriate. One or more of these may be contained.

The content of the oxidative dye used in the first agent composition of the present invention is not particularly limited, but is preferably 0.2 to 10%, more preferably 1 to 8%, and even more preferably 2 to 6%. If the content of the oxidative dye is less than 0.2%, sufficient hair dyeing properties may not be obtained. Furthermore, if the content of the oxidative dye exceeds 10%, it is difficult to expect any further improvement in hair dyeing properties.

In the present invention, the content of the oxidation dye refers to the content of the oxidation dye converted into a pure content. For example, for an oxidation dye in the form of a salt, such as 2,4-diaminophenoxyethanol hydrochloride, the content refers to the content converted into the mass of the non-salt form.

The first agent composition in the present invention contains an alkaline agent from the viewpoint of hair dyeing and bleaching properties.

The alkaline agent used in the first agent composition of the present invention is not particularly limited, but examples thereof include ammonia, alkanolamines, organic amines, hydroxides of alkali metals or alkaline earth metals, carbonates, hydrogen carbonates, metasilicates, phosphates, basic amino acids, etc., and one or more of these may be contained.

Specific examples of the alkanolamine used in the first agent composition of the present invention include monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, and triisopropanolamine.

Specific examples of the organic amine used in the first agent composition of the present invention include 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, morpholine, and guanidine.

Specific examples of the alkali metal or alkaline earth metal hydroxide used in the first agent composition of the present invention include lithium hydroxide, sodium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, etc.

Specific examples of the basic amino acid used in the first agent composition of the present invention include arginine, lysine, and histidine.

Specific examples of the carbonate used in the first agent composition of the present invention include sodium carbonate, potassium carbonate, and ammonium carbonate.

Specific examples of the bicarbonate salt used in the first agent composition of the present invention include sodium bicarbonate, potassium bicarbonate, and ammonium bicarbonate.

Specific examples of the metasilicate salt used in the first agent composition of the present invention include sodium metasilicate, potassium metasilicate, and ammonium metasilicate.

Specific examples of the phosphate salt used in the first agent composition of the present invention include sodium dihydrogen phosphate, disodium hydrogen phosphate, trisodium phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, tripotassium phosphate, ammonium dihydrogen phosphate, diammonium hydrogen phosphate, and triammonium phosphate.

The alkaline agent used in the first agent composition of the present invention is preferably ammonia or an alkanolamine from the viewpoint of hair dyeing and bleaching properties.

The content of the alkaline agent used in the first agent composition of the present invention is not particularly limited, but is preferably 0.5 to 8%. If the content of the alkaline agent is less than 0.5%, sufficient hair dyeing and bleaching properties may not be obtained. Furthermore, if the content of the alkaline agent exceeds 8%, it is difficult to expect any further improvement in hair dyeing and bleaching properties.

The first agent composition in the present invention may contain a higher alcohol having 12 to 24 carbon atoms in order to adjust the viscosity.

Specific examples of the higher alcohols having 12 to 24 carbon atoms include cetyl alcohol, oleyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, myristyl alcohol, arachidyl alcohol, behenyl alcohol, and 2-decyltetradecanol, and the like, and the composition may contain one or more of these.

The content of the higher alcohol having 12 to 24 carbon atoms is not particularly limited, but is preferably 2% or less, more preferably 1% or less, and even more preferably substantially absent. If the content of the higher alcohol having 12 to 24 carbon atoms exceeds 2%, there is a risk that the ejection property from the container during low-temperature storage may decrease.

In this invention, "substantially free" means that it is not intentionally included, and also includes cases where it is unavoidably included.

The first agent composition of the present invention may contain an oily component.

The oily components are not particularly limited, but examples include hydrocarbons, oils and fats, waxes, higher fatty acids, alkyl glyceryl ethers, esters, silicones, etc., and these may contain one or more types.

Specific examples of the hydrocarbons include liquid paraffin, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, heavy liquid isoparaffin, squalane, microcrystalline wax, petrolatum, α-olefin oligomer, polybutene, and ceresin.

Specific examples of the oils and fats include olive oil, camellia oil, shea oil, sunflower oil, rapeseed oil, rice bran oil, rice germ oil, grape seed oil, macadamia nut oil, castor oil, coconut oil, evening primrose oil, avocado oil, peach kernel oil, rosehip oil, argan oil, orange oil, ylang-ylang flower oil, apricot kernel oil, corn oil, pomegranate seed oil, sesame oil, spearmint oil, camellia seed oil, peppermint oil, Hippophae rhamnoides seed oil, Nigella sativa seed oil, malva oleracea oil, bergamot seed oil, hematite seed oil, mink oil, meadowfoam oil, eucalyptus oil, camellia oil, lemon fruit oil, rosemary oil, sunflower oil, peanut oil, cottonseed oil, pistachio oil, kukui nut oil, etc.

Specific examples of the wax include beeswax, candelilla wax, carnauba wax, jojoba oil, rice bran wax, shellac wax, and lanolin.

Specific examples of the higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, undecylenic acid, and lanolinic acid.

Specific examples of the alkyl glyceryl ether include ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monoethyl ether, batyl alcohol, chimyl alcohol, selachyl alcohol, isostearyl glyceryl ether, and diisononyl ether.

Specific examples of the esters include isopropyl myristate, butyl myristate, isopropyl palmitate, ethyl stearate, butyl stearate, ethyl oleate, ethyl linoleate, isopropyl linoleate, cetyl caprylate, hexyl laurate, decyl myristate, myristyl myristate, cetyl myristate, cetyl palmitate, stearyl stearate, decyl oleate, oleyl oleate, cetyl ricinoleate, isostearyl laurate, isotridel myristate, 2-hexyldecyl myristate, isostearyl myristate, myristyl oleate ... 2-Octyldodecyl lysate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, isostearyl palmitate, 2-ethylhexyl stearate, 2-hexyldecyl stearate, isodecyl oleate, isodecyl oleate, 2-octyldodecyl oleate, 2-octyldodecyl oleate, 2-octyldodecyl linoleate, ethyl isostearate, isopropyl isostearate, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, stearyl 2-ethylhexanoate, hexyl isostearate, di-2-ethylhexanoate Ethylene glycol dioleate, ethylene glycol dicaprylate, propylene glycol dicaprylate, propylene glycol dicaprate, propylene glycol dicaprate, neopentyl glycol dicaprylate, neopentyl glycol di-2-ethylhexanoate, glyceryl tricaprylate, glyceryl tri-2-ethylhexanoate, glyceryl tricaprylate, glyceryl triundecylate, glyceryl triisopalmitate, glyceryl triisostearate, trimethylolpropane tri-2-ethylhexanoate, trime triisostearate Examples include lylolpropane, pentaerythritol tetra 2-ethylhexanoate, pentaerythritol tetramyristate, pentaerythritol tetraisostearate, 2-octyldodecyl neopentanoate, 2-hexyldecyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, 2-ethylhexyl isononanoate, 2-hexyldecyl dimethyloctanoate, 2-octyldodecyl dimethyloctanoate, 2-ethylhexyl isopalmitate, 2-hexyldecyl isostearate, isostearyl isostearate, and 2-octyl isostearate.

Specific examples of the silicone include dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, methylcyclopolysiloxane, alcohol-modified silicone, alkyl-modified silicone, amino-modified silicone, and polyether-modified silicone.

The content of the oily component is not particularly limited, but 0.5 to 20% is preferable. If the content of the oily component is less than 0.5%, there is a risk that the hair will not be smooth to the touch when rinsed sufficiently and will not have a glossy feel after drying. Furthermore, if the content of the oily component is more than 20%, there is a risk that the hair will feel sticky after dyeing.

The first agent composition in the present invention may contain a polyhydric alcohol.

The polyhydric alcohol is not particularly limited, but examples thereof include glycerin, diglycerin, polyglycerin, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 1,3-butylene glycol, 1,3-propanediol, pentylene glycol, ethylhexylglycerin, sorbitol, xylitol, maltitol, erythritol, mannitol, lactitol, and the like, and one or more of these may be contained.

The content of the polyhydric alcohol is not particularly limited, but is preferably 0.5 to 20%. If the content of the polyhydric alcohol is less than 0.5%, there is a risk that the hair will not be able to be rinsed smoothly. Furthermore, if the content of the polyhydric alcohol is more than 20%, there is a risk that the emulsion stability will decrease.

The first agent composition of the present invention may contain a cationic surfactant.

The cationic surfactant is not particularly limited, but examples thereof include lauryl trimethyl ammonium chloride, dicocoyl dimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, behenyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium bromide, and behenyl trimethyl ammonium bromide, and one or more of these may be contained.

The content of the cationic surfactant is not particularly limited, but is preferably 0.5 to 5%. If the content of the cationic surfactant is less than 0.5%, there is a risk that the hair will not be smooth to the touch after sufficient drying. Furthermore, if the content of the cationic surfactant is more than 5%, there is a risk that the emulsion stability will decrease.

The first agent composition of the present invention may contain, in addition to the above-mentioned components, one or more of various components used in ordinary cosmetics, quasi-drugs, pharmaceuticals, etc. other than the above-mentioned components, as necessary, within the scope of not impairing the effects of the present invention, such as direct dyes, acid dyes, basic dyes, HC dyes, surfactants, nonionic polymers, amphoteric polymers, cationic polymers, anionic polymers, moisturizers, thickeners, medicinal ingredients, protein derivatives, hydrolyzed proteins, amino acids, metal sequestering agents, antioxidants, plant extracts, herbal extracts, vitamins, preservatives, dyes, pigments, powders, pH adjusters, UV absorbers, fragrances, etc. However, the components are not limited to these examples.

The formulation of the first agent composition in the present invention is preferably a cream, emulsion or gel from the viewpoint of ease of application to hair and spreadability.

The viscosity of the first agent composition in the present invention immediately after preparation and during use is preferably 3,000 to 100,000 mPa·s, and more preferably 10,000 to 70,000 mPa·s, at 20°C. If the viscosity of the first agent composition is less than 3,000 mPa·s, there is a risk that the applicability to hair may decrease. Furthermore, if the viscosity of the first agent composition exceeds 100,000 mPa·s, there is a risk that the ability to eject the composition from the container, the ability to mix with the second agent composition, and the ability to spread the composition on the hair may decrease.

In the present invention, the viscosity immediately after preparation refers to the viscosity measured after the first agent composition or the second agent composition is prepared by a conventional method, left to stand at 20°C for one day, and then the temperature is adjusted.

The viscosity of the first agent composition in the present invention was measured by filling 120 g of the first agent composition into a 140 g sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.), adjusting the temperature to 20°C, and then using a B-type viscometer with a helical stand (Model: Digital Viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) with a No. 4 rotor for 1 minute at a rotation speed of 12 rpm for viscosities less than 50,000 mPa·s and at a rotation speed of 6 rpm for viscosities of 50,000 mPa·s or more.

The viscosity of the first agent composition of the present invention under room temperature storage conditions was measured by filling 120 g of the first agent composition into a 140 g sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) and storing it at 20°C for 30 days, and then measuring it with a B-type viscometer with a helical stand (model: digital viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) using a No. 4 rotor for 1 minute at a rotation speed of 12 rpm for viscosities less than 50,000 mPa·s and a rotation speed of 6 rpm for viscosities of 50,000 mPa·s or more.

The pH of the first agent composition of the present invention immediately after preparation and at the time of use is preferably 9 to 12 at 20°C from the viewpoint of hair dyeing and bleaching properties.

In the present invention, the pH immediately after preparation refers to the pH measured after the first agent composition or the second agent composition is prepared by a conventional method, left to stand at 20°C for one day, and then the temperature is adjusted.

The pH of the first agent composition in the present invention was measured using a glass electrode type hydrogen ion concentration indicator (F-71, manufactured by Horiba, Ltd.) after adjusting the temperature of the first agent composition to 20°C.

The container for filling and storing the first agent composition used in the present invention is not particularly limited, but examples include plastic containers, aluminum tube containers, plastic tube containers, aerosol containers, pouch containers, etc.

The second agent composition of the present invention will be described.

The second agent composition of the present invention contains (A) a polyoxyethylene alkyl ether type nonionic surfactant in which the number of moles of ethylene oxide added is 1, from the viewpoint of ejection properties from the container during low-temperature storage.

The component (A) used in the second agent composition of the present invention is not particularly limited, but may be, for example, POE(1) caprylyl ether, POE(1) undecyl ether, POE(1) lauryl ether, POE(1) tridecyl ether, POE(1) myristyl ether, POE(1) pentadecyl ether, POE(1) cetyl ether, POE(1) palmitoyl ether, POE(1) heptadecyl ether, POE(1) stearyl ether, Examples of the POE (1) isostearyl ether, POE (1) oleyl ether, POE (1) linoleyl ether, POE (1) nonadecyl ether, POE (1) arachidyl ether, POE (1) henicosyl ether, POE (1) behenyl ether, POE (1) erucyl ether, POE (1) lignoceryl ether, POE (1) ceryl ether, POE (1) montanyl ether, etc., which may contain one or more of these. Among these, POE (1) cetyl ether, POE (1) stearyl ether, and POE (1) behenyl ether are preferred from the viewpoint of ejection from a container during low-temperature storage.

The content of the (A) component used in the second agent composition in the present invention is not particularly limited, but is preferably 4 to 30%. If the content of the (A) component is less than 4%, there is a risk that the emulsion stability and mixability with the first agent composition may decrease. Furthermore, if the content of the (A) component is more than 30%, there is a risk that the mixability with the first agent composition may decrease.

The second agent composition of the present invention contains (B) a nonionic surfactant other than the component (A) from the viewpoint of ejection from the container during low-temperature storage.

The (B) component used in the second agent composition of the present invention is not particularly limited, but examples thereof include POE alkyl ethers other than the (A) component, POEPOP alkyl ethers, glycerin fatty acid esters, polyglycerin fatty acid esters, POE glycerin fatty acid esters, sorbitan fatty acid esters, POE sorbitan fatty acid esters, POE sorbitan fatty acid esters, POE sorbitol fatty acid esters, POE hydrogenated castor oil, POE phytosterol, polyethylene glycol fatty acid esters, etc., and these may contain one or more types.

Specific examples of POE alkyl ethers other than component (A) used in the second agent composition of the present invention include, for example, POE (5) decyl ether, POE (6) decyl ether, POE (2) lauryl ether, POE (3) lauryl ether, POE (4) lauryl ether, POE (5) lauryl ether, POE (7) lauryl ether, POE (8) lauryl ether, POE (9) lauryl ether, POE (12) lauryl ether, POE (15) lauryl ether, POE (19) lauryl ether, POE (21) lauryl ether, POE (25) lauryl ether, and POE (30) lauryl ether. ether, POE(40) lauryl ether, POE(3) tridecyl ether, POE(5) tridecyl ether, POE(7) tridecyl ether, POE(8) tridecyl ether, POE(9) tridecyl ether, POE(10) tridecyl ether, POE(12) tridecyl ether, POE(15) tridecyl ether, POE(20) tridecyl ether, POE(2) cetyl ether, POE(5) cetyl ether, POE(7) cetyl ether, POE(8) cetyl ether, POE(10) cetyl ether, POE(13) cetyl ether, POE(15) cetyl ether, POE(20 ) cetyl ether, POE (23) cetyl ether, POE (25) cetyl ether, POE (30) cetyl ether, POE (40) cetyl ether, POE (150) cetyl ether, POE (2) stearyl ether, POE (3) stearyl ether, POE (4) stearyl ether, POE (5) stearyl ether, POE (7) stearyl ether, POE (10) stearyl ether, POE (11) stearyl ether, POE (15) stearyl ether, POE (20) stearyl ether, POE (30) stearyl ether, POE (40) stearyl ether, POE (50) stearyl ether ether, POE(100) stearyl ether, POE(8) isostearyl ether, POE(12) isostearyl ether, POE(16) isostearyl ether), POE(2) oleyl ether, POE(5) oleyl ether, POE(7) oleyl ether, POE(9) oleyl ether, POE(10) oleyl ether, POE(15) oleyl ether, POE(20) oleyl ether, POE(50) oleyl ether, POE(5) behenyl ether, POE(10) behenyl ether, POE(20) behenyl ether, POE(30) behenyl ether, etc.

Specific examples of the POEPOP alkyl ether used in the second agent composition of the present invention include POE(7)POP(2) decyl ether, POE(10)POP(2) decyl ether, POE(1)POP(4) cetyl ether, POE(10)POP(4) cetyl ether, POE(20)POP(4) cetyl ether, POE(20)POP(8) cetyl ether, POE(30)POP(4) stearyl ether, POE(12)POP(6) decyltetradecyl ether, POE(20)POP(6) decyltetradecyl ether, and POE(30)POP(6) decyltetradecyl ether.

Specific examples of the glycerin fatty acid ester used in the second agent composition of the present invention include glyceryl monoundecylenate, glyceryl monomyristate, glyceryl monostearate, glyceryl monoisostearate, glyceryl monooleate, and glyceryl distearate.

Specific examples of the polyglycerin fatty acid ester used in the second agent composition of the present invention include polyglyceryl-4 monolaurate, polyglyceryl-6 monolaurate, polyglyceryl-10 monolaurate, polyglyceryl-10 monomyristate, polyglyceryl-2 monostearate, polyglyceryl-4 monostearate, polyglyceryl-6 monostearate, polyglyceryl-10 monostearate, polyglyceryl-2 monoisostearate, polyglyceryl-10 monoisostearate, polyglyceryl-10 distearate, and polyglyceryl tristearate. Polyglyceryl-10, triisostearate, polyglyceryl-2 monooleate, polyglyceryl-4 monooleate, polyglyceryl-10 monooleate, polyglyceryl-6 dioleate, polyglyceryl-10 trioleate, polyglyceryl-10 pentaoleate, polyglyceryl-6 polyricinoleate, polyglyceryl-10 pentastearate, polyglyceryl-10 pentahydroxystearate, polyglyceryl-10 pentaisostearate, polyglyceryl-10 pentaoleate, and polyglyceryl-10 decaoleate are some examples.

Specific examples of the POE glycerin fatty acid ester used in the second agent composition of the present invention include POE(5) glyceryl monostearate, POE(15) glyceryl monostearate, POE(5) glyceryl monoisostearate, POE(8) glyceryl monoisostearate, POE(10) glyceryl monoisostearate, POE(20) glyceryl monoisostearate, POE(10) glyceryl triisostearate, POE(15) glyceryl triisostearate, POE(20) glyceryl triisostearate, POE(5) glyceryl monooleate, and POE(15) glyceryl monooleate.

Specific examples of the sorbitan fatty acid ester used in the second agent composition of the present invention include sorbitan coconut oil fatty acid, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquistearate, sorbitan tristearate, sorbitan monoisostearate, sorbitan sesquiisostearate, sorbitan monooleate, sorbitan sesquioleate, and sorbitan trioleate.

Specific examples of the POE sorbitan fatty acid ester used in the second agent composition of the present invention include POE (20) sorbitan coconut oil fatty acid, POE (20) sorbitan monopalmitate, POE (6) sorbitan monostearate, POE (20) sorbitan monostearate, POE (20) sorbitan isostearate, POE (20) sorbitan tristearate, POE (6) sorbitan monooleate, POE (20) sorbitan monooleate, and POE (20) sorbitan trioleate.

Specific examples of the POE sorbitol fatty acid ester used in the second agent composition of the present invention include POE (6) sorbitol monolaurate, POE (60) sorbitol tetrastearate, POE (30) sorbitol tetraisostearate, POE (6) sorbitol tetraoleate, POE (30) sorbitol tetraoleate, POE (40) sorbitol tetraoleate, and POE (60) sorbitol tetraoleate.

Specific examples of the POE hydrogenated castor oil used in the second agent composition of the present invention include POE (5) hydrogenated castor oil, POE (10) hydrogenated castor oil, POE (20) hydrogenated castor oil, POE (30) hydrogenated castor oil, POE (40) hydrogenated castor oil, POE (50) hydrogenated castor oil, POE (60) hydrogenated castor oil, POE (80) hydrogenated castor oil, and POE (100) hydrogenated castor oil.

Specific examples of the POE phytosterol used in the second agent composition of the present invention include POE (5) phytosterol, POE (10) phytosterol, POE (20) phytosterol, and POE (30) phytosterol.

Specific examples of the polyethylene glycol fatty acid ester used in the second agent composition of the present invention include POE(9) monolaurate, POE(10) monolaurate, POE(6) monostearate, POE(9) monostearate, POE(10) monostearate, POE(23) monostearate, POE(25) monostearate, POE(40) monostearate, and POE(45) monostearate. Examples of such esters include POE(55) monostearate, POE(150) distearate, POE(250) distearate, POE(8) diisostearate, POE(5) monooleate, POE(6) monooleate, POE(9) monooleate, POE(10) monooleate, POE(14) monooleate, and POE(16) monooleate.

The content of the (B) component used in the second agent composition of the present invention is not particularly limited, but is preferably 0.5 to 10%. If the content of the (B) component is less than 0.5% or if the content of the (B) component is more than 10%, there is a risk of the emulsion stability decreasing.

The second agent composition of the present invention contains an oxidizing agent from the viewpoint of hair dyeing and bleaching properties.

The oxidizing agent used in the second agent composition of the present invention is not particularly limited, but examples thereof include hydrogen peroxide, urea peroxide, melamine peroxide, sodium percarbonate, potassium percarbonate, sodium perborate, potassium perborate, ammonium persulfate, sodium peroxide, potassium peroxide, magnesium peroxide, barium peroxide, calcium peroxide, strontium peroxide, hydrogen peroxide adducts of peroxide salts, hydrogen peroxide adducts of phosphate salts, hydrogen peroxide adducts of pyrophosphate salts, sodium bromate, and the like, and these may contain one or more kinds. Among these, hydrogen peroxide is preferred from the viewpoint of hair dyeing and bleaching properties.

The content of the oxidizing agent used in the second agent composition of the present invention is not particularly limited, but is preferably 2 to 6%. If the content of the oxidizing agent is less than 2%, there is a risk that sufficient hair dyeing and bleaching properties will not be obtained. Furthermore, if the content of the oxidizing agent is more than 6%, there is a risk that the hair will become stiff.

The second agent composition in the present invention may contain a higher alcohol having 12 to 24 carbon atoms in order to adjust the viscosity.

Specific examples of the higher alcohol having 12 to 24 carbon atoms include, but are not limited to, cetyl alcohol, oleyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, myristyl alcohol, arachidyl alcohol, behenyl alcohol, and 2-decyltetradecanol, and the like, and the composition may contain one or more of these.

The content of the higher alcohol having 12 to 24 carbon atoms is not particularly limited, but is preferably 2% or less, more preferably 1% or less, and even more preferably substantially absent. If the content of the higher alcohol having 12 to 24 carbon atoms exceeds 2%, there is a risk that the ejection property from the container during low-temperature storage may decrease.

The second agent composition of the present invention may contain an oily component from the viewpoint of providing a smooth, finger-friendly feel during rinsing and a glossy feel to the hair after drying.

The oily components are not particularly limited, but examples include hydrocarbons, oils and fats, waxes, higher fatty acids, alkyl glyceryl ethers, esters, silicones, etc., and these may contain one or more types.

Specific examples of the hydrocarbons include liquid paraffin, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, heavy liquid isoparaffin, squalane, microcrystalline wax, petrolatum, α-olefin oligomer, polybutene, and ceresin.

Specific examples of the oils and fats include olive oil, camellia oil, shea oil, sunflower oil, rapeseed oil, rice bran oil, rice germ oil, grape seed oil, macadamia nut oil, castor oil, coconut oil, evening primrose oil, avocado oil, peach kernel oil, rosehip oil, argan oil, orange oil, ylang-ylang flower oil, apricot kernel oil, corn oil, pomegranate seed oil, sesame oil, spearmint oil, camellia seed oil, peppermint oil, Hippophae rhamnoides seed oil, Nigella sativa seed oil, malva oleracea oil, bergamot seed oil, hematite seed oil, mink oil, meadowfoam oil, eucalyptus oil, camellia oil, lemon fruit oil, rosemary oil, sunflower oil, peanut oil, cottonseed oil, pistachio oil, kukui nut oil, etc.

Specific examples of the wax include beeswax, candelilla wax, carnauba wax, jojoba oil, rice bran wax, shellac wax, and lanolin.

Specific examples of the higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, undecylenic acid, and lanolinic acid.

Specific examples of the alkyl glyceryl ether include ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monoethyl ether, batyl alcohol, chimyl alcohol, selachyl alcohol, isostearyl glyceryl ether, and diisononyl ether.

Specific examples of the esters include isopropyl myristate, butyl myristate, isopropyl palmitate, ethyl stearate, butyl stearate, ethyl oleate, ethyl linoleate, isopropyl linoleate, cetyl caprylate, hexyl laurate, decyl myristate, myristyl myristate, cetyl myristate, cetyl palmitate, stearyl stearate, decyl oleate, oleyl oleate, cetyl ricinoleate, isostearyl laurate, isotridel myristate, 2-hexyldecyl myristate, isostearyl myristate, myristyl oleate ... 2-Octyldodecyl lysate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, isostearyl palmitate, 2-ethylhexyl stearate, 2-hexyldecyl stearate, isodecyl oleate, isodecyl oleate, 2-octyldodecyl oleate, 2-octyldodecyl oleate, 2-octyldodecyl linoleate, ethyl isostearate, isopropyl isostearate, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, stearyl 2-ethylhexanoate, hexyl isostearate, di-2-ethylhexa Ethylene glycol dioleate, ethylene glycol dicaprylate, propylene glycol dicaprylate, propylene glycol dicaprate, propylene glycol dicaprate, neopentyl glycol dicaprylate, neopentyl glycol di-2-ethylhexanoate, glyceryl tricaprylate, glyceryl tri-2-ethylhexanoate, glyceryl tricaprylate, glyceryl triundecylate, glyceryl triisopalmitate, glyceryl triisostearate, trimethylolpropane tri-2-ethylhexanoate, trime triisostearate Examples include lylolpropane, pentaerythritol tetra 2-ethylhexanoate, pentaerythritol tetramyristate, pentaerythritol tetraisostearate, 2-octyldodecyl neopentanoate, 2-hexyldecyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, 2-ethylhexyl isononanoate, 2-hexyldecyl dimethyloctanoate, 2-octyldodecyl dimethyloctanoate, 2-ethylhexyl isopalmitate, 2-hexyldecyl isostearate, isostearyl isostearate, and 2-octyl isostearate.

Specific examples of the silicone include dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, methylcyclopolysiloxane, alcohol-modified silicone, alkyl-modified silicone, amino-modified silicone, and polyether-modified silicone.

The content of the oily component is not particularly limited, but 0.5 to 20% is preferable. If the content of the oily component is less than 0.5%, there is a risk that the hair will not be smooth to the touch when rinsed sufficiently and will not have a glossy feel after drying. Furthermore, if the content of the oily component is more than 20%, there is a risk that the hair will feel sticky after dyeing.

The second agent composition of the present invention may contain a polyhydric alcohol from the viewpoint of smoothness when rinsing.

The polyhydric alcohol is not particularly limited, but examples thereof include glycerin, diglycerin, polyglycerin, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 1,3-butylene glycol, 1,3-propanediol, pentylene glycol, ethylhexylglycerin, sorbitol, xylitol, maltitol, erythritol, mannitol, lactitol, and the like, and one or more of these may be contained.

The content of the polyhydric alcohol is not particularly limited, but is preferably 0.5 to 20%. If the content of the polyhydric alcohol is less than 0.5%, there is a risk that the hair will not be able to be rinsed smoothly. Furthermore, if the content of the polyhydric alcohol is more than 20%, there is a risk that the emulsion stability will decrease.

The second agent composition of the present invention may contain a cationic surfactant from the viewpoint of smoothness of hair run-through after drying.

The cationic surfactant is not particularly limited, but examples thereof include lauryl trimethyl ammonium chloride, dicocoyl dimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, behenyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium bromide, and behenyl trimethyl ammonium bromide, and one or more of these may be contained.

The content of the cationic surfactant is not particularly limited, but is preferably 0.5 to 5%. If the content of the cationic surfactant is less than 0.5%, there is a risk that the hair will not be smooth to the touch after sufficient drying. Furthermore, if the content of the cationic surfactant is more than 5%, there is a risk that the stability of the oxidizing agent will decrease.

The second agent composition in the present invention may contain an acid, a metal sequestering agent, and a pH adjuster in order to improve the stability of the oxidizing agent.

The acids, sequestering agents, and pH adjusters are not particularly limited, but examples include phosphoric acid, edetic acid, hydroxyethanediphosphonic acid and their salts, and hydroxides of alkali metals or alkaline earth metals, and these may be contained alone or in combination.

The second agent composition of the present invention may contain, in addition to the above-mentioned components, various components other than the above-mentioned components that are used in ordinary cosmetics, quasi-drugs, pharmaceuticals, etc., as necessary, within the scope of not impairing the effects of the present invention, such as surfactants, nonionic polymers, amphoteric polymers, cationic polymers, anionic polymers, moisturizers, thickeners, medicinal ingredients, protein derivatives, hydrolyzed proteins, amino acids, plant extracts, herbal extracts, vitamins, preservatives, fragrances, etc., and may contain one or more of these. However, the components are not limited to these examples.

The formulation of the second agent composition in the present invention is preferably a cream, emulsion or gel from the viewpoint of ease of application to hair and spreadability.

The viscosity of the second agent composition of the present invention immediately after preparation and during use is preferably 3,000 to 100,000 mPa·s, and more preferably 5,000 to 50,000 mPa·s, at 20°C. If the viscosity of the second agent composition is less than 3,000 mPa·s, there is a risk that the ease of application to hair may decrease. Furthermore, if the viscosity of the second agent composition exceeds 100,000 mPa·s, there is a risk that the ease of ejection from the container, the ease of mixing with the first agent composition, and the ease of spread on hair may decrease.

The viscosity of the second agent composition in the present invention was measured by filling 120 g of the second agent composition into a 140 g sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.), adjusting the temperature to 20°C, and then using a B-type viscometer with a helical stand (Model: Digital Viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) with a No. 4 rotor for 1 minute at a rotation speed of 12 rpm for viscosities less than 50,000 mPa·s and at a rotation speed of 6 rpm for viscosities of 50,000 mPa·s or more.

The viscosity of the second agent composition of the present invention under room temperature storage conditions was measured by filling 120 g of the second agent composition obtained by conventional preparation into a 140 g sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) and storing it at 20°C for 30 days, and then measuring it with a B-type viscometer with a helical stand (model: digital viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) using a No. 4 rotor for 1 minute at a rotation speed of 12 rpm for viscosities less than 50,000 mPa·s and at a rotation speed of 6 rpm for viscosities of 50,000 mPa·s or more.

The pH of the second agent composition of the present invention immediately after preparation and during use is preferably 1.5 to 3.5 at 20°C from the viewpoint of the stability of the oxidizing agent.

The pH of the second agent composition in the present invention was measured using a glass electrode type hydrogen ion concentration indicator (F-71, manufactured by Horiba, Ltd.) after adjusting the temperature of the second agent composition to 20°C.

The container for filling and storing the second agent composition used in the present invention is not particularly limited, but examples include plastic containers, aluminum tube containers, plastic tube containers, aerosol containers, pouch containers, etc.

The oxidative hair dye or bleach composition of the present invention will now be described.

The oxidative hair dye or bleach composition of the present invention contains (A) a polyoxyethylene alkyl ether type nonionic surfactant in which the number of moles of ethylene oxide added is 1, from the viewpoint of spreadability on hair when stored at low temperature.

The component (A) used in the oxidative hair dye or bleach composition of the present invention is not particularly limited, but may be, for example, POE(1) caprylyl ether, POE(1) undecyl ether, POE(1) lauryl ether, POE(1) tridecyl ether, POE(1) myristyl ether, POE(1) pentadecyl ether, POE(1) cetyl ether, POE(1) palmitoyl ether, POE(1) heptadecyl ether, POE(1) stearyl ether ... ether, POE(1) isostearyl ether, POE(1) oleyl ether, POE(1) linoleyl ether, POE(1) nonadecyl ether, POE(1) arachidyl ether, POE(1) henicosyl ether, POE(1) behenyl ether, POE(1) erucyl ether, POE(1) lignoceryl ether, POE(1) ceryl ether, POE(1) montanyl ether, etc., which may contain one or more of these. Among these, POE(1) cetyl ether, POE(1) stearyl ether, and POE(1) behenyl ether are preferred from the viewpoints of application to hair and spreadability.

The content of the component (A) used in the oxidative hair dye or bleach composition of the present invention is not particularly limited, but is preferably 2.5 to 27%. If the content of the component (A) is less than 2.5%, the applicability to hair may decrease. If the content of the component (A) is more than 27%, the spreadability on hair may decrease.

The oxidative hair dye or bleach composition of the present invention contains (B) a nonionic surfactant other than the component (A) from the viewpoint of spreadability on hair when stored at low temperature.

The (B) component used in the oxidative hair dye or bleach composition of the present invention is not particularly limited, but examples thereof include POE alkyl ethers other than the (A) component, POEPOP alkyl ethers, glycerin fatty acid esters, polyglycerin fatty acid esters, POE glycerin fatty acid esters, sorbitan fatty acid esters, POE sorbitan fatty acid esters, POE sorbit fatty acid esters, POE hydrogenated castor oil, POE phytosterol, polyethylene glycol fatty acid esters, etc., and these may contain one or more types.

Specific examples of POE alkyl ethers other than component (A) used in the oxidative hair dye or bleach composition of the present invention include POE (5) decyl ether, POE (6) decyl ether, POE (2) lauryl ether, POE (3) lauryl ether, POE (4) lauryl ether, POE (5) lauryl ether, POE (7) lauryl ether, POE (8) lauryl ether, POE (9) lauryl ether, POE (12) lauryl ether, POE (15) lauryl ether, POE (19) lauryl ether, POE (21) lauryl ether, POE (25) lauryl ether, and POE (30). lauryl ether, POE(40) lauryl ether, POE(3) tridecyl ether, POE(5) tridecyl ether, POE(7) tridecyl ether, POE(8) tridecyl ether, POE(9) tridecyl ether, POE(10) tridecyl ether, POE(12) tridecyl ether, POE(15) tridecyl ether, POE(20) tridecyl ether, POE(2) cetyl ether, POE(5) cetyl ether, POE(7) cetyl ether, POE(8) cetyl ether, POE(10) cetyl ether, POE(13) cetyl ether, POE(15) cetyl ether, POE( 20) cetyl ether, POE (23) cetyl ether, POE (25) cetyl ether, POE (30) cetyl ether, POE (40) cetyl ether, POE (150) cetyl ether, POE (2) stearyl ether, POE (3) stearyl ether, POE (4) stearyl ether, POE (5) stearyl ether, POE (7) stearyl ether, POE (10) stearyl ether, POE (11) stearyl ether, POE (15) stearyl ether, POE (20) stearyl ether, POE (30) stearyl ether, POE (40) stearyl ether, POE (50) stearyl ether Allyl ether, POE (100) stearyl ether, POE (8) isostearyl ether, POE (12) isostearyl ether, POE (16) isostearyl ether, POE (2) oleyl ether, POE (5) oleyl ether, POE (7) oleyl ether, POE (9) oleyl ether, POE (10) oleyl ether, POE (15) oleyl ether, POE (20) oleyl ether, POE (50) oleyl ether, POE (5) behenyl ether, POE (10) behenyl ether, POE (20) behenyl ether, POE (30) behenyl ether, etc.

Specific examples of the POEPOP alkyl ether used in the present invention include POE(7)POP(2) decyl ether, POE(10)POP(2) decyl ether, POE(1)POP(4) cetyl ether, POE(10)POP(4) cetyl ether, POE(20)POP(4) cetyl ether, POE(20)POP(8) cetyl ether, POE(30)POP(4) stearyl ether, POE(12)POP(6) decyltetradecyl ether, POE(20)POP(6) decyltetradecyl ether, and POE(30)POP(6) decyltetradecyl ether.

Specific examples of the glycerin fatty acid esters used in the oxidative hair dye or bleach composition of the present invention include glyceryl monoundecylenate, glyceryl monomyristate, glyceryl monostearate, glyceryl monoisostearate, glyceryl monooleate, and glyceryl distearate.

Specific examples of the polyglycerin fatty acid esters used in the oxidative hair dye or bleach composition of the present invention include polyglyceryl-4 monolaurate, polyglyceryl-6 monolaurate, polyglyceryl-10 monolaurate, polyglyceryl-10 monomyristate, polyglyceryl-2 monostearate, polyglyceryl-4 monostearate, polyglyceryl-6 monostearate, polyglyceryl-10 monostearate, polyglyceryl-2 monoisostearate, polyglyceryl-10 monoisostearate, polyglyceryl-10 distearate, polyglyceryl-10 tristearate, Examples include glyceryl-10, polyglyceryl-2 triisostearate, polyglyceryl-2 monooleate, polyglyceryl-4 monooleate, polyglyceryl-10 monooleate, polyglyceryl-6 dioleate, polyglyceryl-10 trioleate, polyglyceryl-10 pentaoleate, polyglyceryl-6 polyricinoleate, polyglyceryl-10 pentastearate, polyglyceryl-10 pentahydroxystearate, polyglyceryl-10 pentaisostearate, polyglyceryl-10 pentaoleate, and polyglyceryl-10 decaoleate.

Specific examples of the POE glycerin fatty acid ester used in the oxidative hair dye or bleach composition of the present invention include POE(5) glyceryl monostearate, POE(15) glyceryl monostearate, POE(5) glyceryl monoisostearate, POE(8) glyceryl monoisostearate, POE(10) glyceryl monoisostearate, POE(20) glyceryl monoisostearate, POE(10) glyceryl triisostearate, POE(15) glyceryl triisostearate, POE(20) glyceryl triisostearate, POE(5) glyceryl monooleate, and POE(15) glyceryl monooleate.

Specific examples of the sorbitan fatty acid esters used in the oxidative hair dye or bleach composition of the present invention include sorbitan coconut oil fatty acid, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquistearate, sorbitan tristearate, sorbitan monoisostearate, sorbitan sesquiisostearate, sorbitan monooleate, sorbitan sesquioleate, and sorbitan trioleate.

Specific examples of the POE sorbitan fatty acid ester used in the oxidative hair dye or bleach composition of the present invention include POE (20) sorbitan coconut oil fatty acid, POE (20) sorbitan monopalmitate, POE (6) sorbitan monostearate, POE (20) sorbitan monostearate, POE (20) sorbitan isostearate, POE (20) sorbitan tristearate, POE (6) sorbitan monooleate, POE (20) sorbitan monooleate, POE (20) sorbitan trioleate, etc.

Specific examples of the POE sorbitol fatty acid ester used in the oxidative hair dye or bleach composition of the present invention include POE (6) sorbitol monolaurate, POE (60) sorbitol tetrastearate, POE (30) sorbitol tetraisostearate, POE (6) sorbitol tetraoleate, POE (30) sorbitol tetraoleate, POE (40) sorbitol tetraoleate, and POE (60) sorbitol tetraoleate.

Specific examples of the POE hydrogenated castor oil used in the oxidative hair dye or bleach composition of the present invention include POE (5) hydrogenated castor oil, POE (10) hydrogenated castor oil, POE (20) hydrogenated castor oil, POE (30) hydrogenated castor oil, POE (40) hydrogenated castor oil, POE (50) hydrogenated castor oil, POE (60) hydrogenated castor oil, POE (80) hydrogenated castor oil, and POE (100) hydrogenated castor oil.

Specific examples of the POE phytosterol used in the oxidative hair dye or bleach composition of the present invention include POE (5) phytosterol, POE (10) phytosterol, POE (20) phytosterol, and POE (30) phytosterol.

Specific examples of the polyethylene glycol fatty acid ester used in the oxidative hair dye or bleach composition of the present invention include POE(9) monolaurate, POE(10) monolaurate, POE(6) monostearate, POE(9) monostearate, POE(10) monostearate, POE(23) monostearate, POE(25) monostearate, POE(40) monostearate, POE( 45) monostearate ester, POE (55) monostearate ester, POE (150) distearate ester, POE (250) distearate ester, POE (8) diisostearate ester, POE (5) monooleate ester, POE (6) monooleate ester, POE (9) monooleate ester, POE (10) monooleate ester, POE (14) monooleate ester, POE (16) monooleate ester, etc.

The content of the (B) component used in the oxidative hair dye or bleach composition of the present invention is not particularly limited, but is preferably 0.3 to 11.5%. If the content of the (B) component is less than 0.3% or if the content of the (B) component is more than 11.5%, the application and spreadability of the composition on hair may decrease.

The oxidation hair dye composition of the present invention contains an oxidation dye from the viewpoint of hair dyeing properties.

The oxidative dyes used in the present invention are not particularly limited, but examples include paraphenylenediamine, toluene-2,5-diamine, orthoaminophenol, paraaminophenol, metaaminophenol, 5-aminoorthocresol, 2,6-diaminopyridine, 2,4-diaminophenoxyethanol, 1-naphthol, resorcin, and salts thereof. In addition, those listed in the "Standards for Quasi-Drug Ingredients 2006 Integrated Edition" (published November 2013, Yakuji Nipposha) can also be used as appropriate. One or more of these may be contained.

The content of the oxidative dye used in the oxidative hair dye composition of the present invention is not particularly limited, but is preferably 0.05 to 8%, more preferably 0.2 to 6%, and even more preferably 0.3 to 5%. If the content of the oxidative dye is less than 0.05%, sufficient hair dyeing properties may not be obtained. Furthermore, if the content of the oxidative dye exceeds 8%, it is difficult to expect any further improvement in hair dyeing properties.

The oxidative hair dye or bleach composition of the present invention contains an alkaline agent from the viewpoint of hair dyeing and bleaching properties.

The alkaline agent used in the oxidative hair dye or bleach composition of the present invention is not particularly limited, but examples thereof include ammonia, alkanolamines, organic amines, hydroxides of alkali metals or alkaline earth metals, carbonates, hydrogencarbonates, metasilicates, phosphates, basic amino acids, etc., and one or more of these may be contained.

Specific examples of the alkanolamines used in the oxidative hair dye or bleach composition of the present invention include monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, and triisopropanolamine.

Specific examples of the organic amines used in the oxidative hair dye or bleach composition of the present invention include 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, morpholine, guanidine, etc.

Specific examples of the alkali metal or alkaline earth metal hydroxides used in the oxidative hair dye or bleach composition of the present invention include lithium hydroxide, sodium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, etc.

Specific examples of the basic amino acids used in the oxidative hair dye or bleach composition of the present invention include arginine, lysine, histidine, etc.

Specific examples of the carbonates used in the oxidative hair dye or bleach composition of the present invention include sodium carbonate, potassium carbonate, and ammonium carbonate.

Specific examples of the bicarbonate salt used in the oxidative hair dye or bleach composition of the present invention include sodium bicarbonate, potassium bicarbonate, and ammonium bicarbonate.

Specific examples of the metasilicate salts used in the oxidative hair dye or bleach composition of the present invention include sodium metasilicate, potassium metasilicate, and ammonium metasilicate.

Specific examples of the phosphate salts used in the oxidative hair dye or bleach composition of the present invention include sodium dihydrogen phosphate, disodium hydrogen phosphate, trisodium phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, tripotassium phosphate, ammonium dihydrogen phosphate, diammonium hydrogen phosphate, and triammonium phosphate.

The alkaline agent used in the oxidative hair dye or bleach composition of the present invention is preferably ammonia or an alkanolamine from the viewpoint of hair dyeing and bleaching properties.

The content of the alkaline agent used in the oxidative hair dye or bleach composition of the present invention is not particularly limited, but is preferably 0.2 to 7%. If the content of the alkaline agent is less than 0.2%, sufficient hair dyeing and bleaching properties may not be obtained. Furthermore, if the content of the alkaline agent exceeds 7%, it is difficult to expect any further improvement in hair dyeing and bleaching properties.

The oxidative hair dye or bleach composition of the present invention contains an oxidizing agent from the viewpoint of hair dyeing and bleaching properties.

The oxidizing agent used in the oxidative hair dye or bleach composition of the present invention is not particularly limited, but examples thereof include hydrogen peroxide, urea peroxide, melamine peroxide, sodium percarbonate, potassium percarbonate, sodium perborate, potassium perborate, ammonium persulfate, sodium peroxide, potassium peroxide, magnesium peroxide, barium peroxide, calcium peroxide, strontium peroxide, hydrogen peroxide adducts of peroxide salts, hydrogen peroxide adducts of phosphate salts, hydrogen peroxide adducts of pyrophosphate salts, sodium bromate, and the like, and these may contain one or more kinds. Among these, hydrogen peroxide is preferred from the viewpoint of hair dyeing and bleaching properties.

The content of the oxidizing agent used in the oxidizing hair dye or bleach composition of the present invention is not particularly limited, but is preferably 0.3 to 5%. If the content of the oxidizing agent is less than 0.3%, sufficient hair dyeing and bleaching properties may not be obtained. Furthermore, if the content of the oxidizing agent exceeds 5%, the hair may become stiff.

The oxidative hair dye or bleach composition of the present invention may contain a higher alcohol having 12 to 24 carbon atoms in order to adjust the viscosity.

Specific examples of the higher alcohol having 12 to 24 carbon atoms include, but are not limited to, cetyl alcohol, oleyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, myristyl alcohol, arachidyl alcohol, behenyl alcohol, and 2-decyltetradecanol, and the like, and the composition may contain one or more of these.

The content of the higher alcohol having 12 to 24 carbon atoms is not particularly limited, but is preferably 2% or less, more preferably 1% or less, and even more preferably substantially absent. If the content of the higher alcohol having 12 to 24 carbon atoms exceeds 2%, there is a risk of reduced stretchability on hair when stored at low temperatures.

The oxidative hair dye or bleach composition of the present invention may contain an oily component from the viewpoint of providing finger-comfort during rinsing and a glossy feel to the hair after drying.

The oily components are not particularly limited, but examples include hydrocarbons, oils and fats, waxes, higher fatty acids, alkyl glyceryl ethers, esters, silicones, etc., and these may contain one or more types.

Specific examples of the hydrocarbons include liquid paraffin, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, heavy liquid isoparaffin, squalane, microcrystalline wax, petrolatum, α-olefin oligomer, polybutene, and ceresin.

Specific examples of the oils and fats include olive oil, camellia oil, shea oil, sunflower oil, rapeseed oil, rice bran oil, rice germ oil, grape seed oil, macadamia nut oil, castor oil, coconut oil, evening primrose oil, avocado oil, peach kernel oil, rosehip oil, argan oil, orange oil, ylang-ylang flower oil, apricot kernel oil, corn oil, pomegranate seed oil, sesame oil, spearmint oil, camellia seed oil, peppermint oil, Hippophae rhamnoides seed oil, Nigella sativa seed oil, malva oleracea oil, bergamot seed oil, hematite seed oil, mink oil, meadowfoam oil, eucalyptus oil, camellia oil, lemon fruit oil, rosemary oil, sunflower oil, peanut oil, cottonseed oil, pistachio oil, kukui nut oil, etc.

Specific examples of the wax include beeswax, candelilla wax, carnauba wax, jojoba oil, rice bran wax, shellac wax, and lanolin.

Specific examples of the higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, undecylenic acid, and lanolinic acid.

Specific examples of the alkyl glyceryl ether include ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monoethyl ether, batyl alcohol, chimyl alcohol, selachyl alcohol, isostearyl glyceryl ether, and diisononyl ether.

Specific examples of the esters include isopropyl myristate, butyl myristate, isopropyl palmitate, ethyl stearate, butyl stearate, ethyl oleate, ethyl linoleate, isopropyl linoleate, cetyl caprylate, hexyl laurate, decyl myristate, myristyl myristate, cetyl myristate, cetyl palmitate, stearyl stearate, decyl oleate, oleyl oleate, cetyl ricinoleate, isostearyl laurate, isotridel myristate, 2-hexyldecyl myristate, isostearyl myristate, myristyl oleate ... 2-Octyldodecyl lysate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, isostearyl palmitate, 2-ethylhexyl stearate, 2-hexyldecyl stearate, isodecyl oleate, isodecyl oleate, 2-octyldodecyl oleate, 2-octyldodecyl oleate, 2-octyldodecyl linoleate, ethyl isostearate, isopropyl isostearate, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, stearyl 2-ethylhexanoate, hexyl isostearate, di-2-ethylhexanoate Ethylene glycol dioleate, ethylene glycol dicaprylate, propylene glycol dicaprylate, propylene glycol dicaprate, propylene glycol dicaprate, neopentyl glycol dicaprylate, neopentyl glycol di-2-ethylhexanoate, glyceryl tricaprylate, glyceryl tri-2-ethylhexanoate, glyceryl tricaprylate, glyceryl triundecylate, glyceryl triisopalmitate, glyceryl triisostearate, trimethylolpropane tri-2-ethylhexanoate, trime triisostearate Examples include lylolpropane, pentaerythritol tetra 2-ethylhexanoate, pentaerythritol tetramyristate, pentaerythritol tetraisostearate, 2-octyldodecyl neopentanoate, 2-hexyldecyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, 2-ethylhexyl isononanoate, 2-hexyldecyl dimethyloctanoate, 2-octyldodecyl dimethyloctanoate, 2-ethylhexyl isopalmitate, 2-hexyldecyl isostearate, isostearyl isostearate, and 2-octyl isostearate.

Specific examples of the silicone include dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, methylcyclopolysiloxane, alcohol-modified silicone, alkyl-modified silicone, amino-modified silicone, and polyether-modified silicone.

The content of the oily component is not particularly limited, but is preferably 0.1 to 20%. If the content of the oily component is less than 0.1%, there is a risk that the hair will not be smooth to the touch when rinsed sufficiently and will not have a glossy feel after drying. Furthermore, if the content of the oily component exceeds 20%, there is a risk that the hair will feel sticky after dyeing.

The oxidative hair dye or bleach composition of the present invention may contain a polyhydric alcohol from the viewpoint of smoothness when rinsing.

The polyhydric alcohol is not particularly limited, but examples thereof include glycerin, diglycerin, polyglycerin, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 1,3-butylene glycol, 1,3-propanediol, pentylene glycol, ethylhexylglycerin, sorbitol, xylitol, maltitol, erythritol, mannitol, lactitol, and the like, and one or more of these may be contained.

The content of the polyhydric alcohol is not particularly limited, but is preferably 0.1 to 20%. If the content of the polyhydric alcohol is less than 0.1%, there is a risk that the hair will not be able to be rinsed smoothly. Furthermore, if the content of the polyhydric alcohol is more than 20%, there is a risk that the emulsion stability will decrease.

The oxidative hair dye or bleach composition of the present invention may contain a cationic surfactant from the viewpoint of the ease of running your fingers through the hair after drying.

The cationic surfactant is not particularly limited, but examples thereof include lauryl trimethyl ammonium chloride, dicocoyl dimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, behenyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium bromide, and behenyl trimethyl ammonium bromide, and one or more of these may be contained.

The content of the cationic surfactant is not particularly limited, but is preferably 0.1 to 5%. If the content of the cationic surfactant is less than 0.1%, there is a risk that the hair after drying will not be sufficiently smooth to run your fingers through. Furthermore, if the content of the cationic surfactant is more than 5%, it is difficult to expect any further improvement in the smoothness of the hair after drying.

The oxidative hair dye or bleach composition of the present invention may contain an acid, a metal sequestering agent, and a pH adjuster in order to improve the stability of the oxidizing agent.

The acids, sequestering agents, and pH adjusters are not particularly limited, but examples include phosphoric acid, edetic acid, hydroxyethanediphosphonic acid and their salts, and hydroxides of alkali metals or alkaline earth metals, and these may be contained alone or in combination.

The oxidative hair dye or bleach composition of the present invention may contain, in addition to the above-mentioned components, one or more of various components used in ordinary cosmetics, quasi-drugs, pharmaceuticals, etc. other than the above-mentioned components, as necessary, within the range that does not impair the effects of the present invention, such as direct dyes, acid dyes, basic dyes, HC dyes, surfactants, nonionic polymers, amphoteric polymers, cationic polymers, anionic polymers, moisturizers, thickeners, medicinal ingredients, protein derivatives, hydrolyzed proteins, amino acids, antioxidants, plant extracts, herbal extracts, vitamins, preservatives, dyes, pigments, powders, ultraviolet absorbers, fragrances, etc. However, the components are not limited to these examples.

The viscosity of the oxidative hair dye or bleach composition of the present invention during use is preferably 3,000 to 100,000 mPa·s, and more preferably 7,000 to 70,000 mPa·s, at 20°C. If the viscosity of the oxidative hair dye or bleach composition is less than 3,000 mPa·s, the applicability to hair may decrease. If the viscosity of the oxidative hair dye or bleach composition exceeds 100,000 mPa·s, the spreadability on hair may decrease.

The viscosity of the oxidative hair dye or bleach composition of the present invention during use is measured by adjusting the temperature of the first and second agent compositions to 20°C, weighing 40 g of each into a 100 mL Griffin beaker, mixing with a glass rod until homogenous, transferring the resulting mixture to a 50 mL Griffin beaker, and measuring with a B-type viscometer with a helical stand (model: digital viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) with a No. 4 rotor for 1 minute at a rotation speed of 12 rpm for viscosities less than 50,000 mPa·s and at a rotation speed of 6 rpm for viscosities of 50,000 mPa·s or more.

The "change in viscosity during low-temperature storage: viscosity under low-temperature storage conditions (V5°C)/viscosity under normal temperature storage conditions (V20°C)" of the oxidative hair dye or bleach composition of the present invention is preferably 1.2 or less in upper limit, more preferably 1.1 or less, and even more preferably 1.05 or less in upper limit, from the viewpoint of maintaining good extensibility even during low-temperature storage. The lower limit is preferably 0.95 or more.

The viscosity (V5°C) of the oxidative hair dye or bleach composition of the present invention under low-temperature storage conditions was measured by storing the first and second agent compositions prepared by conventional methods at 5°C for 30 days, weighing 40 g of each into a 100 mL Griffin beaker and mixing with a glass rod until homogenous. The resulting mixture was transferred to a 50 mL Griffin beaker and measured with a B-type viscometer with a helical stand (model: digital viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) using a No. 4 rotor for 1 minute at a rotation speed of 12 rpm for viscosities less than 50,000 mPa·s and at a rotation speed of 6 rpm for viscosities of 50,000 mPa·s or more.

The viscosity (V20°C) of the oxidative hair dye or bleach composition of the present invention under room temperature storage conditions was measured by storing the first and second agent compositions prepared by the usual method at 20°C for 30 days, weighing 40 g of each into a 100 mL Griffin beaker and mixing with a glass rod until homogenous, transferring the resulting mixture to a 50 mL Griffin beaker, and measuring with a B-type viscometer with a helical stand (model: digital viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) with a No. 4 rotor for 1 minute at a rotation speed of 12 rpm for viscosities less than 50,000 mPa·s and at a rotation speed of 6 rpm for viscosities of 50,000 mPa·s or more.

The "change in viscosity during low-temperature storage: viscosity under low-temperature storage conditions (V5°C)/viscosity under normal temperature storage conditions (V20°C)" of the oxidative hair dye and bleach compositions of the present invention is the value obtained by dividing the viscosity under low-temperature storage conditions (V5°C) measured by the above-mentioned measurement method by the viscosity under normal temperature storage conditions (V20°C).

The pH of the oxidative hair dye or bleach composition of the present invention when used is preferably 7 to 12 at 20°C from the viewpoint of hair dyeing and bleaching properties.

The pH of the oxidative hair dye or bleach composition of the present invention was measured by adjusting the temperature of the first and second agent compositions to 20°C, weighing 40 g of each into a 100 mL Griffin beaker, mixing with a glass rod until homogenous, and measuring the resulting mixture with a glass electrode type hydrogen ion concentration indicator (F-71, manufactured by Horiba, Ltd.).

The oxidative hair dye or bleach composition of the present invention can be obtained by mixing the first and second bleaching compositions. The mixing method is not particularly limited, but examples include mixing using a tray or cup, mixing by shaking in a bottle-shaped container, and mixing on the hair using a brush or bristles.

The mixing mass ratio of the first agent composition and the second agent composition in the present invention (first agent:second agent) is not particularly limited, but from the viewpoint of hair dyeing and bleaching properties, it is preferably 1:5 to 5:1, and more preferably 1:2 to 2:1.

The oxidative hair dye or bleach composition may be a two-component type consisting of the first and second agent compositions, or a multi-component type consisting of a third agent composition, etc., consisting of three or more agents.

In the case of a three or more agent type, an alkaline agent, a dye, and an oxidizing agent may be contained in an agent other than the first agent composition and the second agent composition, so long as the effect of the present invention is not impaired, and persulfates or percarbonates may be contained to improve the bleaching power. In addition, the agent may be a hair beauty serum or the like that contains an oily component, etc.

Specific examples of the persulfate include ammonium persulfate, potassium persulfate, and sodium persulfate.

Specific examples of the percarbonate include sodium percarbonate and potassium percarbonate.

The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.

In the evaluation tests shown in this specification, the components and their contents in the first agent composition, second agent composition, and oxidative hair dye or bleach composition were changed. The units showing the contents of each component are all mass %, and these were prepared by conventional methods.

<Changes in ejection properties from container during low-temperature storage>
In the evaluation test relating to "Change in dischargeability from container during low-temperature storage" shown in the present specification, the first-agent composition or the second-agent composition obtained by preparing in a conventional manner was filled in an aluminum tube (manufactured by Takeuchi Press Kogyo Co., Ltd., outer diameter: 25.2 mm, inner diameter: 24.5 mm, shoulder dimension: 130 mm, aperture: 6.7 mm, inner surface coating: TPL-418, lining material: Hi-lap K) at 40 g for the first-agent composition, and filled in an aluminum tube container (manufactured by Takeuchi Press Kogyo Co., Ltd., outer diameter: 25.2 mm, inner diameter: 24.5 mm, shoulder dimension: 130 mm, aperture: 6.7 mm, inner surface coating: TPL-418, lining material: Hi-lap K) at 40 g for the second-agent composition. The first-agent composition or the second-agent composition stored for 30 days at 5°C and the first-agent composition or the second-agent composition stored for 30 days at 20°C were each discharged in their entirety from the aluminum tube, and the difference in the dischargeability of the first-agent composition or the second-agent composition from the container at storage temperatures of 5°C and 20°C was evaluated by 10 panelists according to the evaluation criteria below, and the total score was used as the evaluation result.

<Evaluation criteria for change in ejection properties from container during low-temperature storage>
No difference in ejection properties between 5°C and 20°C: 3 points. A slight difference in ejection properties between 5°C and 20°C: 2 points. A difference in ejection properties between 5°C and 20°C: 1 point.

<Evaluation results of changes in ejection properties from containers during low-temperature storage>
◎: 25 points to 30 points 〇: 21 points to 25 points △: 16 points to 20 points ×: 10 points to 15 points

<Changes in elongation on hair when stored at low temperatures>
In the evaluation test relating to "Change in extensibility during low-temperature storage" shown in the present specification, the first-agent composition and the second-agent composition obtained by preparing them in a conventional manner were filled in an aluminum tube (manufactured by Takeuchi Press Kogyo Co., Ltd., outer diameter: 25.2 mm, inner diameter: 24.5 mm, shoulder dimension: 130 mm, aperture: 6.7 mm (inner surface coating: TPL-418, lining material: Hi-lap K) at 40 g for the first-agent composition, and filled in an aluminum tube container (manufactured by Takeuchi Press Kogyo Co., Ltd., outer diameter: 25.2 mm, inner diameter: 24.5 mm, shoulder dimension: 130 mm, aperture: 6.7 mm, inner surface coating: TPL-301, inner bag: polyethylene (thickness: 0.2 mm)) at 40 g for the second-agent composition, and then stored at 5°C for 30 The first and second agent compositions stored for 1 day and the first and second agent compositions stored for 30 days at 20°C were weighed out in an amount of 40 g each and mixed uniformly in a cup to obtain an oxidative hair dye or bleach composition. The oxidative hair dye or bleach composition was then applied to a wig (100% black human hair, manufactured by Bealux, model number: Queen Cut No. 775N) using a brush, and the wig was combed with the brush until the oxidative hair dye or bleach composition was applied to the entire wig. The difference in elongation of the oxidative hair dye or bleach composition at storage temperatures of 5°C and 20°C was evaluated by 10 panelists according to the following evaluation criteria, and the total score was used as the evaluation result.

<Evaluation criteria for changes in elongation on hair during low-temperature storage>
No difference in elongation between 5°C and 20°C: 3 points Slight difference in elongation between 5°C and 20°C: 2 points Difference in elongation between 5°C and 20°C: 1 point

<Evaluation results of changes in elongation on hair during low-temperature storage>
◎: 25 points to 30 points 〇: 20 points to 24 points △: 15 points to 19 points ×: 10 points to 14 points

<Change in viscosity during low-temperature storage: Viscosity under low-temperature storage conditions (V5° C.)/Viscosity under normal temperature storage conditions (V20° C.)>
In the evaluation test of "Change in viscosity during low-temperature storage: Viscosity under low-temperature storage conditions (V5°C)/Viscosity under normal temperature storage conditions (V20°C)" shown in the present specification, the first-agent composition and the second-agent composition obtained by preparing them in a conventional manner were filled in an aluminum tube (manufactured by Takeuchi Press Kogyo Co., Ltd., outer diameter: 25.2 mm, inner diameter: 24.5 mm, shoulder dimension: 130 mm, aperture: 6.7 mm, inner coating: TPL-418, lining material: Hi-lap K) at 40 g for the first-agent composition, and in an aluminum tube container (manufactured by Takeuchi Press Kogyo Co., Ltd., outer diameter: 25.2 mm, inner diameter: 24.5 mm, shoulder dimension: 130 mm, aperture: 6.7 mm, inner coating: TPL-301, inner bag: polyethylene) at 40 g for the second-agent composition. The first agent composition and the second agent composition that had been stored for 30 days under the condition of 5°C and the first agent composition and the second agent composition that had been stored for 30 days under the condition of 20°C were each weighed out at 40 g into a 100 mL Griffin beaker and mixed using a glass rod until homogenous. The resulting mixture was transferred to a 50 mL Griffin beaker and measured using a B-type viscometer with a helical stand (model: digital viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) with a No. 4 rotor for 1 minute under conditions of a rotation speed of 12 rpm for viscosities less than 50,000 mPa s and a rotation speed of 6 rpm for viscosities of 50,000 mPa s or more, and "(V5°C)/(V20°C)" was calculated.

In Examples 1 to 12 in Table 1, even when the type and content of the (A) component in the first agent composition was changed, the results showed that there was no effect on the ejection properties from the container even when stored at low temperatures, as compared to Comparative Examples 1 to 3.

In Examples 13 to 20 in Table 2, even when the type and content of the (B) component in the first agent composition was changed, the results showed that there was no change in the ejection properties from the container even when stored at low temperature, as compared to Comparative Example 4.

In Examples 21 to 31 in Table 3, even when the type and content of the (A) component in the second agent composition was changed, the results showed that there was no change in the ejection properties from the container even when stored at low temperatures, compared to Comparative Examples 5 to 7.

In Examples 32 to 39 in Table 4, even when the type and content of the (B) component in the second agent composition was changed, the results showed that there was no change in the ejection properties from the container even when stored at low temperature, as compared to Comparative Example 8.

The oxidation hair dye composition obtained by mixing the first agent composition and the second agent composition in Table 5 in a mixing ratio of 1:1 ((first agent:second agent) = 1:1) showed no change in elongation on hair when stored at low temperature.

Table 6 shows the "viscosity under low temperature storage conditions (V5°C)" of the oxidation hair dye compositions of Table 5.
The units of the values shown in Table 6 are mPa·s.

Table 7 shows the "viscosity under room temperature storage conditions (V20°C)" of the oxidation hair dye compositions of Table 5.
The units of the values shown in Table 7 are mPa·s.

Table 8 shows the "Change in viscosity when stored at low temperature: (V5°C)/(V20°C)" for the oxidation hair dye compositions in Table 5.

The present invention provides an oxidative hair dye or bleach composition that includes a first agent composition containing an alkaline agent and a second agent composition containing an oxidizing agent, and that is not affected in terms of ejection from a container or spreadability on hair when stored at low temperatures compared to when stored at room temperature.

Claims (6)

An oxidative hair dye or bleach composition comprising a first agent composition containing an alkaline agent and a second agent composition containing an oxidizing agent,
Both the first agent composition and the second agent composition are
(A) one or more selected from POE (1) cetyl ether, POE (1) stearyl ether, and POE (1) benzyl ether
(B) An oxidative hair dye or bleach composition which contains a nonionic surfactant other than the component (A) , wherein the content of the component (A) in the first agent composition is 1 to 25 mass%, the content of the component (B) in the first agent composition is 0.15 to 13.5 mass%, and the content of the component (A) in the second agent composition is 4 to 30 mass%, and the content of the component (B) in the second agent composition is 0.5 to 10 mass% . The oxidative hair dye or bleach composition according to claim 1, characterized in that the content of the higher alcohol having 12 to 24 carbon atoms in the first agent composition is 2 mass% or less. The oxidative hair dye or bleach composition according to claim 1 or 2, characterized in that the content of the higher alcohol having 12 to 24 carbon atoms in the second agent composition is 2 mass% or less. The oxidative hair dye or bleach composition according to any one of claims 1 to 3 , characterized in that the viscosity of the first agent composition at 20°C is 3,000 to 100,000 mPa·s. 5. The oxidative hair dye or bleach composition according to claim 1, wherein the second agent composition has a viscosity at 20° C. of 3,000 to 100,000 mPa·s. The oxidative hair dye or bleach composition according to any one of claims 1 to 5, characterized in that the content of the higher alcohol having 12 to 24 carbon atoms in the oxidative hair dye or bleach composition is 2 mass% or less.