Second agent composition of aerosol type hair dye or hair bleach

Abstract

To provide a second agent composition that can achieve stable discharge of an agent from an aerosol container and provides stable hair dyeing / bleaching effects by minimizing the use of ionic surfactant and keeping the viscosity constant from before the agent is filled into the aerosol container to after it is discharged from the aerosol container.SOLUTION: Provided is a second agent composition for an aerosol-type hair dye or bleach to be used by mixing with a first agent composition containing an alkaline agent, the second agent composition containing the following components (A) to (D): (A) hydrogen peroxide; (B) a nonionic surfactant; (C) a higher alcohol; and (D) hydrocarbons, the mass ratio [(C)+(D)] / (B) being 1.0 or more and 3.5 or less, the mass ratio (D) / (C) being 1.3 or more and 2.1 or less, and the viscosity immediately after being discharged from the container being 10,000 mPa s or more and 100,000 mPa s or less.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a second agent composition for an aerosol type hair dye or hair bleach. [Background technology]

[0002] Conventionally, there have been known two-component aerosol hair dyes or hair bleaches, which consist of a first component containing an alkaline agent and a second component containing an oxidizing agent, the first component and the second component being stored in separate aerosol containers, and which are discharged and mixed when used (Patent Documents 1 and 2).

[0003] In the case of such two-agent aerosol products, it is generally known that, during the production of the product, high shear forces are applied to the agents when the agents are filled into the aerosol container and when the agents are ejected from the aerosol container. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2000-297018 A [Patent Document 2] JP 2004-091359 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the shear force applied to the agent during filling and discharging is very strong, which changes the emulsion structure of the agent, and the viscosity of the agent may become lower than the initial viscosity when used. Such a decrease in viscosity of the agent causes a change in the amount of agent discharged from the aerosol container. In particular, in a two-agent aerosol type hair dye or hair bleach, the above-mentioned viscosity change may cause the amount of the first agent discharged from the first agent container and the amount of the second agent discharged from the second agent container to differ significantly, making it impossible to obtain a stable hair dyeing / bleaching effect.

[0006] Furthermore, in the case of aerosol hair dyes / bleachs, if hydrogen peroxide and a cationic surfactant (often with a chloride ion as the counter ion) are used in the second agent, there is a risk of corrosion of the metal container, and in order to prevent this, it is necessary to select an inner bag or inner coating for the metal container, which requires a great deal of effort. In addition, if an anionic surfactant is used in the second agent, there is a risk of the hair feeling deteriorating and the surfactant may decompose at low pH, making it difficult to use an ionic surfactant.

[0007] The present invention relates to a second agent composition that can achieve stable ejection of the agent from an aerosol container and provide a stable hair dyeing / bleaching effect by maintaining a constant viscosity from before the agent is filled into the aerosol container until after it is ejected from the aerosol container, without using ionic surfactants as much as possible. [Means for solving the problem]

[0008] As a result of extensive research, the inventors have discovered that in the second agent of an aerosol type hair dye or hair bleach, in order to maintain a constant viscosity of the agent without using as much ionic surfactant as possible, it is sufficient to reduce the emulsion particle size, and further that for this purpose it is effective to blend a nonionic surfactant, a higher alcohol, and a hydrocarbon in a specific ratio.

[0009] The present invention provides an aerosol type second-agent composition for hair dyeing or hair bleaching, which is used by mixing with a first-agent composition containing an alkaline agent, comprising the following components (A) to (D), in which the mass ratio of the total of components (C) and (D) to component (B), [(C)+(D)] / (B), is 1.0 or more and 3.5 or less, and the mass ratio of component (D) to component (C), (D) / (C), is 1.2 or more and 2.2 or less. (A) Hydrogen peroxide (B) Nonionic surfactants (C) Higher alcohol (D) Hydrocarbons Effect of the Invention

[0010] The second agent composition of the present invention is inhibited from thinning due to filling or discharging into an aerosol container and maintains a constant viscosity, so that it can be stably discharged from an aerosol container. When used together with the first agent as an aerosol-type hair dye or bleach, a stable hair dyeing / bleaching effect can be obtained. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] [Second agent composition] The second agent composition of the present invention is used as an aerosol type hair dye or hair bleach in combination with a first agent composition containing an alkaline agent.

[0012] [Component (A): Hydrogen peroxide] The second agent composition of the present invention contains hydrogen peroxide as component (A). The content of hydrogen peroxide in the second agent composition is preferably 1% by mass or more, more preferably 3% by mass or more, from the viewpoint of obtaining sufficient bleaching power, and is preferably 9% by mass or less, more preferably 6% by mass or less, from the viewpoint of suppressing irritation to the scalp.

[0013] [Component (B): Nonionic surfactant] The second agent composition of the present invention contains a nonionic surfactant as component (B). Examples of component (B) include polyoxyalkylene alkyl ethers, alkyl alkanolamides, polyoxyalkylene alkylamines, alkyl polyglucosides, and alkyl glyceryl ethers. Among these, from the viewpoint of maintaining a constant viscosity of the second agent composition, polyoxyalkylene alkyl ethers are preferred, and polyoxyethylene alkyl ethers are more preferred.

[0014] As the polyoxyethylene alkyl ether, one represented by the following general formula (1) can be used.

[0015] R 1 -O-(CH2CH2-O) m -H (1) [In the formula, R 1represents a linear or branched, saturated or unsaturated hydrocarbon group having 8 to 22 carbon atoms, and m represents an average value of 1 to 100.

[0016] In the general formula (1), R 1 From the viewpoint of the solubility of the dye contained in the hair dye, the number of carbon atoms is 8 or more, preferably 10 or more, more preferably 12 or more, and is 22 or less, preferably 20 or less, more preferably 18 or less. Component (B) may be used alone or in combination of two or more kinds.

[0017] From the viewpoint of the stability of the second agent composition, component (B) is preferably a combination of (B-1) where m in general formula (1) is 1 or more and less than 30, and (B-2) where m is 30 or more and 100 or less, more preferably a combination of (B-1) where m is 1 or more and 20 or less, and (B-2) where m is 35 or more and 60 or less, and even more preferably a combination of (B-1) where m is 1 or more and 10 or less, and (B-2) where m is 35 or more and 45 or less. From the viewpoint of the stability of the second agent composition, the mass ratio of component (B-1) to component (B-2) [(B-1):(B-2)] is preferably 0.5:9.5 to 4:1, more preferably 1:9 to 3:2, even more preferably 1.5:8.5 to 1:1, and even more preferably 1:4 to 2:3.

[0018] From the viewpoint of maintaining a constant viscosity of the second agent composition, the content of component (B) in the second agent composition is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, even more preferably 2% by mass or more, even more preferably 3% by mass or more, even more preferably 5% by mass or more, even more preferably 7% by mass or more, and is preferably 15% by mass or less, more preferably 12% by mass or less, even more preferably 10% by mass or less, and even more preferably 9% by mass or less.

[0019] [Component (C): Higher alcohol] The second agent composition of the present invention contains a higher alcohol as component (C), which can be represented by the following general formula (2).

[0020] R 2 -OH (2) [In the formula, R 2 represents a linear or branched hydrocarbon group having 12 to 24 carbon atoms.

[0021] Examples of component (C) include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, arachyl alcohol, behenyl alcohol, carnaubyl alcohol, oleyl alcohol, etc. Component (C) can be used alone or in combination of two or more.

[0022] From the viewpoint of keeping the viscosity of the second agent composition constant, the component (C) is R 2 is preferably a combination of (C-1) a linear alkyl group having from 12 to 18 carbon atoms and (C-2) a linear alkyl group having from 20 to 24 carbon atoms, and more preferably a combination of (C-1) a linear alkyl group having from 14 to 18 carbon atoms and (C-2) a linear alkyl group having from 20 to 22 carbon atoms. From the viewpoint of maintaining a constant viscosity of the second agent composition, the mass ratio of component (C-1) to component (C-2) [(C-1):(C-2)] is preferably 0.5:9.5 to 9.5:0.5, more preferably 1:9 to 9:1, even more preferably 1.5:8.5 to 8.5:1.5, even more preferably 1:4 to 4:1, and even more preferably 1:3 to 3:1.

[0023] From the viewpoint of maintaining a constant viscosity of the second agent composition, the content of component (C) in the second agent composition is preferably 0.5% by mass or more, more preferably 0.8% by mass or more, even more preferably 1.0% by mass or more, even more preferably 2% by mass or more, even more preferably 3% by mass or more, and is preferably 30% by mass or less, more preferably 25% by mass or less, even more preferably 20% by mass or less, even more preferably 15% by mass or less, even more preferably 10% by mass or less, and even more preferably 8% by mass or less.

[0024] [Component (D): Hydrocarbon] The second agent composition of the present invention contains a hydrocarbon as component (D). The hydrocarbon of component (D) used in the present invention is preferably one that is liquid at 25°C, and examples thereof include liquid paraffin, liquid isoparaffin, light isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin, and squalane. Among these, liquid paraffin is preferred from the viewpoint of maintaining a constant viscosity of the second agent composition. Component (D) can be used alone or in combination of two or more.

[0025] From the viewpoint of improving the brightness after hair dyeing or bleaching, the content of component (D) in the second agent composition is preferably 3% by mass or more, more preferably 5% by mass or more, and is preferably 30% by mass or less, more preferably 25% by mass or less, even more preferably 20% by mass or less, even more preferably 15% by mass or less, and even more preferably 12% by mass or less.

[0026] In addition, the mass ratio of the total of components (C) and (D) to component (B) in the second agent composition, [(C) + (D)] / (B), is 1.0 or more, preferably 1.2 or more, more preferably 1.5 or more, and is 3.5 or less, preferably 3.3 or less, more preferably 3.2 or less, from the viewpoint of maintaining a constant viscosity of the second agent composition.

[0027] Furthermore, the mass ratio (D) / (C) of component (D) to component (C) in the second agent composition is 1.2 or more, and preferably 1.3 or more, and 2.2 or less, and preferably 2.1 or less, from the viewpoint of maintaining a constant viscosity of the second agent composition.

[0028] [Component (E): Cationic surfactant] The second agent composition of the present invention may contain a cationic surfactant as component (E). As the cationic surfactant of component (E), monoalkyltrimethylammonium chloride and monoalkyltrimethylammonium bromide are preferable, and among them, stearyltrimethylammonium chloride (steartrimonium chloride), cetyltrimethylammonium chloride (cetrimonium chloride), and lauryltrimethylammonium chloride (lauryltrimonium chloride) can be used. Component (E) can be used alone or in combination of two or more kinds.

[0029] From the viewpoint of preventing corrosion of metal containers, the content of component (E) in the second agent composition is preferably 0.001 mass% or less, more preferably 0.0005 mass% or less, and it is further preferable that the second agent composition does not contain component (E).

[0030] [Component (F): Hydroxyethanediphosphonic acid] The second agent of the present invention may contain hydroxyethanediphosphonic acid as component (F). From the viewpoint of stabilizing hydrogen peroxide, the content of component (F) in the second agent composition is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.10% by mass or more, even more preferably 0.3% by mass or more, and is preferably 2% by mass or less, more preferably 1.5% by mass or less, even more preferably 1% by mass or less.

[0031] [pH] From the viewpoint of inhibiting decomposition of hydrogen peroxide, the pH (25° C.) of the second agent composition of the present invention is preferably 2 or more, more preferably 2.5 or more, and is preferably 6 or less, more preferably 4 or less. Examples of pH adjusters include inorganic acids such as hydrochloric acid and phosphoric acid; organic acids such as citric acid, glycolic acid, and lactic acid; and phosphates such as monopotassium dihydrogen phosphate and disodium monohydrogen phosphate.

[0032] 〔viscosity〕 The viscosity of the second agent composition of the present invention before it is filled into an aerosol container (hereinafter referred to as "viscosity 1") is, from the viewpoint of formulation stability, preferably 5,000 mPa·s or more, more preferably 10,000 mPa·s or more, even more preferably 15,000 mPa·s or more, even more preferably 20,000 mPa·s or more, even more preferably 25,000 mPa·s or more, and is preferably 100,000 mPa·s or less, more preferably 90,000 mPa·s or less, even more preferably 80,000 mPa·s or less, even more preferably 70,000 mPa·s or less, and even more preferably 50,000 mPa·s or less.

[0033] One month after filling the second agent composition of the present invention into the inner bag, the viscosity immediately after the second agent composition is discharged from the second container (hereinafter referred to as "viscosity 2") is, from the viewpoint of formulation stability, preferably 5,000 mPa·s or more, more preferably 10,000 mPa·s or more, even more preferably 15,000 mPa·s or more, even more preferably 20,000 mPa·s or more, even more preferably 25,000 mPa·s or more, and is preferably 100,000 mPa·s or less, more preferably 90,000 mPa·s or less, even more preferably 80,000 mPa·s or less, even more preferably 70,000 mPa·s or less, and even more preferably 50,000 mPa·s or less.

[0034] From the viewpoint of formulation stability, the ratio of viscosity 2 to viscosity 1 (viscosity 2 / viscosity 1) is preferably 0.80 or more, more preferably 0.85 or more, even more preferably 0.90 or more, even more preferably 0.93 or more, and is preferably 1.25 or less, more preferably 1.20 or less, even more preferably 1.15 or less, even more preferably 1.13 or less.

[0035] The viscosity (25° C.) of the second agent composition of the present invention is measured using a B-type viscometer equipped with a helical stand and after rotating the composition with a TC rotor at 10 rpm for 1 minute.

[0036] [Volume average diameter of emulsified particles in second agent composition] From the viewpoint of maintaining a constant viscosity, the volume average diameter of the emulsified particles before the second agent composition of the present invention is preferably 0.05 μm or more, more preferably 0.10 μm or more, and is preferably 23 μm or less, even more preferably 20 μm or less, even more preferably 15 μm or less, even more preferably 12 μm or less, and even more preferably 10 μm or less.

[0037] By setting the viscosity within the above range, it is possible to maintain a constant viscosity of the second agent composition discharged from the second container regardless of the temperature range.

[0038] Here, the volume average diameter of the emulsified particles in the second agent composition was obtained by measuring the volume distribution of the average diameter of the second agent using a dynamic light scattering particle size distribution measuring device manufactured by HORIBA, selecting the sample setting as "Organic sample" (refractive index: 1.600-0.000i) and the dispersion medium setting as "Water" (refractive index: 1.333).

[0039] [First agent composition] The second agent composition of the present invention is used as an aerosol type hair dye or hair bleach in combination with a first agent composition containing an alkaline agent.

[0040] [Alkaline agent] The first agent composition contains an alkaline agent. Examples of the alkaline agent include ammonia and its salts (e.g., ammonium hydrogen carbonate); alkanolamines and their salts, such as monoethanolamine, isopropanolamine, 2-amino-2-methylpropanol, and 2-aminobutanol; alkanediamines and their salts, such as 1,3-propanediamine; and carbonates, such as guanidine carbonate, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, and potassium hydrogen carbonate. These alkaline agents can be used alone or in combination of two or more.

[0041] The content of the alkaline agent in the first agent composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1.0% by mass or more, and even more preferably 2% by mass or more, in terms of sufficient hair dyeing effect, and is preferably 15% by mass or less, more preferably 10% by mass or less, and even more preferably 7% by mass or less, in terms of reducing hair damage and scalp irritation.

[0042] 〔dye〕 When the second agent composition of the present invention is a second agent for a hair dye, the first agent composition may contain an oxidative dye intermediate or a direct dye.

[0043] (Oxidation dye intermediates) The oxidation dye intermediate may be a known precursor or coupler that is generally used in hair dyes. Examples of the precursor include paraphenylenediamine, toluene-2,5-diamine, orthochloroparaphenylenediamine, N-phenylparaphenylenediamine, N,N-bis(hydroxyethyl)paraphenylenediamine, 3-methyl-4-aminophenol, 2-hydroxyethylparaphenylenediamine, paraaminophenol, paramethylaminophenol, 4-amino-metacresol, orthoaminophenol, and salts thereof.

[0044] Examples of couplers include resorcin, 2-methylresorcin, 1-naphthol, 1,5-dihydroxynaphthalene, 5-aminoorthocresol, metaphenylenediamine, orthoaminophenol, metaaminophenol, paraaminophenol, 2,4-diaminophenoxyethanol, 2,6-diaminopyridine, 2-methyl-5-hydroxyethylaminophenol, 2-amino-3-hydroxypyridine, and salts thereof.

[0045] The precursor and the coupler can be used alone or in combination of two or more kinds. The content of each of the precursor and the coupler in the first agent composition is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, and is preferably 5% by mass or less, more preferably 4% by mass or less.

[0046] (direct dye) Examples of direct dyes include acid dyes, nitro dyes, disperse dyes, and basic dyes. More specifically, examples of acid dyes include Blue No. 1, Purple No. 401, Black No. 401, Orange No. 205, Red No. 227, Red No. 106, Yellow No. 203, and Acid Orange No. 3. Examples of nitro dyes include 2-nitro-p-phenylenediamine, 2-amino-6-chloro-4-nitrophenol, 3-nitro-p-hydroxyethylaminophenol, 4-nitro-o-phenylenediamine, 4-amino-3-nitrophenol, 4-hydro- Examples of the disperse dyes include disperse purple 1, disperse blue 1, and disperse black 9. Examples of the basic dyes include basic blue 99, basic brown 16, basic brown 17, basic red 76, basic yellow 76, basic orange 31, and basic red 51.

[0047] The direct dye may be used alone or in combination of two or more kinds, and may be used in combination with an oxidation dye intermediate. The content of the direct dye in the first agent is preferably 0.001% by mass or more, more preferably 0.01% by mass or more, and is preferably 5% by mass or less, more preferably 3% by mass or less.

[0048] [Other ingredients in the first agent] The first agent may contain components that are commonly used in the art in addition to the above-mentioned alkaline agent and dye.

[0049] [Shape of aerosol container] Aerosol containers that can be used in the present invention include (1) double-type aerosol containers in which an inner bag containing a first agent and an inner bag containing a second agent are housed in separate aerosol containers (e.g., a container described in JP 2000-297018 A), and (2) double-type aerosol containers in which an inner bag containing a first agent and an inner bag containing a second agent are each housed in a single aerosol container (e.g., a container described in JP 2013-43659 A).

[0050] The inner bag is preferably elastic and made of synthetic resin such as high or low density polyethylene, saponified ethylene-vinyl acetate copolymer, polyethylene terephthalate, polypropylene, polyacrylonitrile, etc., or a laminate of these, and is preferably low in propellant gas permeability. The inner surface of the inner bag can also be coated with a chemical-resistant resin.

[0051] The propellant gas used in the present invention is not particularly limited as long as it is generally used in aerosol products, such as dimethyl ether, liquefied petroleum gas, nitrogen gas, alternative fluorocarbons, etc. Among these, nitrogen gas is preferred from the viewpoint of preventing deterioration.

[0052] [Dosage form] The second agent composition of the present invention may be in the form of a cream, gel, paste, foam, or the like when ejected from an aerosol container.

[0053] [Method of producing an aerosol type hair dye or hair bleach] An aerosol type hair dye or hair bleach can be produced by filling an aerosol container with the first agent composition containing an alkaline agent and the second agent composition of the present invention, respectively. In this case, it is preferable to adjust the viscosity of the second agent composition of the present invention to the above-mentioned viscosity range, i.e., 5,000 mPa s or more and 100,000 mPa s or less, before filling it into the aerosol container.

[0054] [Hair dyeing tools] The aerosol type hair dye or bleach of the present invention can be applied to hair using a hair dyeing tool, such as a hair dyeing tool having a brush part and a comb part as described in JP-A-2006-326081.

[0055] With respect to the above-described embodiment, preferred aspects of the present invention will be further disclosed below.

[0056] <1> The second-agent composition for aerosol type hair dye or hair bleach, which is used by mixing with a first-agent composition containing an alkaline agent, contains the following components (A) to (D), in which the mass ratio of the total of components (C) and (D) to component (B), [(C)+(D)] / (B), is 1.0 or more and 3.5 or less, and the mass ratio of component (D) to component (C), (D) / (C), is 1.2 or more and 2.2 or less. (A) Hydrogen peroxide (B) Nonionic surfactants (C) Higher alcohol (D) Hydrocarbons

[0057] <2> The content of component (A) in the second agent composition is preferably 1% by mass or more, more preferably 3% by mass or more, and is preferably 9% by mass or less, more preferably 6% by mass or less. <1> The second agent composition described in.

[0058] <3> Component (B) is preferably a polyoxyethylene alkyl ether represented by the following general formula (1): <1> or <2> The second agent composition described in. R 1 -O-(CH2CH2-O) m -H (1) [In the formula, R 1 represents a linear or branched, saturated or unsaturated hydrocarbon group having 8 to 22 carbon atoms, and m represents an average value of 1 to 100.

[0059] <4> R in general formula (1) 1The number of carbon atoms is preferably 10 or more, more preferably 12 or more, and is preferably 20 or less, more preferably 18 or less. <3> The second agent composition described in.

[0060] <5> Component (B) is preferably a combination of (B-1) a polyoxyethylene alkyl ether in which m in general formula (1) is 1 or more and less than 30 and (B-2) a polyoxyethylene alkyl ether in which m in general formula (1) is 30 or more and 100 or less, more preferably a combination of (B-1) a polyoxyethylene alkyl ether in which m in general formula (1) is 1 or more and 20 or less and (B-2) a polyoxyethylene alkyl ether in which m in general formula (1) is 35 or more and 60 or less, and even more preferably a combination of (B-1) a polyoxyethylene alkyl ether in which m in general formula (1) is 1 or more and 10 or less and (B-2) a polyoxyethylene alkyl ether in which m in general formula (1) is 35 or more and 45 or less. <3> or <4> The second agent composition described in.

[0061] <6> The mass ratio of the component (B-1) to the component (B-2) [(B-1):(B-2)] is preferably 0.5:9.5 to 4:1, more preferably 1:9 to 3:2, even more preferably 1.5:8.5 to 1:1, and still more preferably 1:4 to 2:3. <5> The second agent composition described in.

[0062] <7> The content of component (B) in the second agent composition is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, even more preferably 2% by mass or more, even more preferably 3% by mass or more, even more preferably 5% by mass or more, even more preferably 7% by mass or more, and is preferably 15% by mass or less, more preferably 12% by mass or less, even more preferably 10% by mass or less, even more preferably 9% by mass or less. <1> ~ <6> 2. The second agent composition according to claim 1 .

[0063] <8> Preferably, component (C) is a higher alcohol represented by the following general formula (2): <1> ~ <7> 2. The second agent composition according to claim 1 . R 2 -OH (2) [In the formula, R2 represents a straight or branched chain hydrocarbon group having 12 to 24 carbon atoms.

[0064] <9> The component (C) is preferably (C-1) R in the general formula (2) 2 (C-2) a higher alcohol having a straight-chain hydrocarbon group having 12 to 18 carbon atoms, and (C-3) R 2 is a linear hydrocarbon group having 20 to 24 carbon atoms, more preferably (C-1) a combination of higher alcohols, 2 (C-2) a higher alcohol having a straight-chain hydrocarbon group having 14 to 18 carbon atoms, and (C-3) R 2 is a combination of higher alcohols having a straight-chain hydrocarbon group having 20 to 22 carbon atoms; <8> The second agent composition described in.

[0065] <10> The mass ratio of component (C-1) to component (C-2) [(C-1):(C-2)] is preferably 0.5:9.5 to 9.5:0.5, more preferably 1:9 to 9:1, even more preferably 1.5:8.5 to 8.5:1.5, even more preferably 1:4 to 4:1, and even more preferably 1:3 to 3:1. <9> The second agent composition described in.

[0066] <11> The content of component (C) in the second agent composition is preferably 0.5% by mass or more, more preferably 0.8% by mass or more, even more preferably 1.0% by mass or more, even more preferably 2% by mass or more, even more preferably 3% by mass or more, and is preferably 30% by mass or less, more preferably 25% by mass or less, even more preferably 20% by mass or less, even more preferably 15% by mass or less, even more preferably 10% by mass or less, even more preferably 8% by mass or less. <1> ~ <10> 2. The second agent composition according to claim 1 .

[0067] <12> Component (D) is preferably a liquid hydrocarbon at 25°C; <1> ~ <11> 2. The second agent composition according to claim 1 .

[0068] <13> Component (D) is preferably at least one selected from the group consisting of liquid paraffin, liquid isoparaffin, light isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin and squalane; <12> The second agent composition described in.

[0069] <14> The content of component (D) in the second agent composition is preferably 3% by mass or more, more preferably 5% by mass or more, and is preferably 30% by mass or less, more preferably 25% by mass or less, even more preferably 20% by mass or less, even more preferably 15% by mass or less, and even more preferably 12% by mass or less. <1> ~ <13> 2. The second agent composition according to claim 1 .

[0070] <15> The mass ratio of the total of components (C) and (D) to component (B) in the second agent composition, [(C) + (D)] / (B), is preferably 1.2 or more, more preferably 1.5 or more, and is preferably 3.3 or less, more preferably 3.2 or less. <1> ~ <14> 2. The second agent composition according to claim 1 .

[0071] <16> The mass ratio (D) / (C) of the component (D) to the component (C) in the second agent composition is preferably 1.3 or more and preferably 2.1 or less. <1> ~ <15> 2. The second agent composition according to claim 1 .

[0072] <17> Furthermore, the second agent composition may contain a cationic surfactant as component (E) preferably in an amount of 0.001% by mass or less, more preferably 0.0005% by mass or less, and even more preferably does not contain component (E). <1> ~ <16> 2. The second agent composition according to claim 1 .

[0073] <18> Preferably, it further contains hydroxyethanediphosphonic acid as component (F). <1> ~ <17> 2. The second agent composition according to claim 1 .

[0074] <19> The content of component (F) in the second agent composition is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.10% by mass or more, even more preferably 0.3% by mass or more, and is preferably 2% by mass or less, more preferably 1.5% by mass or less, even more preferably 1% by mass or less. <18> The second agent composition described in.

[0075] <20> The pH at 25°C is preferably 2 or more, more preferably 2.5 or more, and is preferably 6 or less, more preferably 4 or less. <1> ~ <19> 2. The second agent composition according to claim 1 .

[0076] <21> The viscosity before filling into an aerosol container is preferably 5,000 mPa·s or more, more preferably 10,000 mPa·s or more, even more preferably 15,000 mPa·s or more, even more preferably 20,000 mPa·s or more, even more preferably 25,000 mPa·s or more, and is preferably 100,000 mPa·s or less, more preferably 90,000 mPa·s or less, even more preferably 80,000 mPa·s or less, even more preferably 70,000 mPa·s or less, even more preferably 50,000 mPa·s or less. <1> ~ <20> 2. The second agent composition according to claim 1 .

[0077] <22> the viscosity immediately after filling the inner bag and discharging from the second container one month later is preferably 5,000 mPa·s or more, more preferably 10,000 mPa·s or more, even more preferably 15,000 mPa·s or more, even more preferably 20,000 mPa·s or more, even more preferably 25,000 mPa·s or more, and is preferably 100,000 mPa·s or less, more preferably 90,000 mPa·s or less, even more preferably 80,000 mPa·s or less, even more preferably 70,000 mPa·s or less, even more preferably 50,000 mPa·s or less; <1> ~ <21> 2. The second agent composition according to claim 1 .

[0078] <23> The ratio (viscosity 2 / viscosity 1) of the viscosity (viscosity 2) immediately after filling into the inner bag and discharging from the second container one month later to the viscosity (viscosity 1) before filling into the aerosol container is preferably 0.80 or more, more preferably 0.85 or more, even more preferably 0.90 or more, even more preferably 0.93 or more, and is preferably 1.25 or less, more preferably 1.20 or less, even more preferably 1.15 or less, even more preferably 1.13 or less. <1> ~ <22> 2. The second agent composition according to claim 1 .

[0079] <24> The volume average diameter of the emulsified particles of the second agent composition before filling into the inner bag is preferably 0.05 μm or more, more preferably 0.10 μm or more, and also preferably 23 μm or less, even more preferably 20 μm or less, even more preferably 15 μm or less, even more preferably 12 μm or less, and even more preferably 10 μm or less. <1> ~ <23> 2. The second agent composition according to claim 1 . EXAMPLES

[0080] Example 1, Comparative Example 1 A second agent composition was prepared according to the formulation shown in Table 1. The second agent composition was then filled into the inner bag of the second container of a double-barreled aerosol, and nitrogen gas was filled between the inner bag and the second agent container. The viscosity and volume average diameter of the second agent composition were measured by the methods shown below.

[0081] (Viscosity measurement method) The viscosity of the second agent composition was measured at two points in time: before filling into the container and immediately after discharging from the container one month after filling into the container. The viscosity (25°C) was measured using a B-type viscometer with a helical stand (Model TVB-10R, T-BAR STAGE TS-10, manufactured by Toki Sangyo Co., Ltd.) after rotating at 10 rpm for 1 minute using a TC rotor.

[0082] (Method for measuring the volume average diameter of emulsion particles) The volume average diameter of the emulsion particles was obtained by measuring the volume distribution of the average diameter of the emulsion particles using a HORIBA DYNAMIC LIGHT SCATTERING PARTICLE SIZE ANALYZER LB-500, selecting the sample setting as "Organic sample" (refractive index: 1.600-0.000i) and the dispersion medium setting as "Water" (refractive index: 1.333).

[0083] [Table 1]

[0084] Examples 2 to 7, Comparative Examples 2 to 5 Second agent compositions were prepared having the formulations shown in Tables 2 and 3. The volume average diameter of the emulsified particles in the second agent compositions was measured by the method described above.

[0085] [Table 2]

[0086] [Table 3]

Claims

1. A second-agent composition for aerosol type hair dye or hair bleach, which is used by mixing with a first-agent composition containing an alkaline agent, contains the following components (A) to (D) and (F), and the content of the cationic surfactant (E) is 0.001% by mass or less or does not contain component (E): A second-agent composition for aerosol type hair dyeing or hair bleaching, in which the mass ratio of the total of components (C) and (D) to component (B), [(C)+(D)] / (B), is 1.0 or more and 3.5 or less, the mass ratio of component (D) to component (C), (D) / (C), is 1.3 or more and 2.1 or less, and the viscosity immediately after being discharged from a container is 10,000 mPa s or more and 100,000 mPa s or less. (A) Hydrogen peroxide (B) Nonionic surfactant: 3% by mass or more and 9% by mass or less (C) Stearyl alcohol (C-1) and behenyl alcohol (C-2) 3% by mass or more and 8% by mass or less (D) Hydrocarbons: 5% by mass or more and 12% by mass or less (F) Hydroxyethanediphosphonic acid: 0.3% by mass or more and 2% by mass or less

2. The second agent composition according to claim 1, wherein component (B) is a polyoxyethylene alkyl ether represented by the following general formula (1): R 1 -O-(CH 2 CH 2 -O) m -H (1) [In the formula, R 1 represents a linear or branched, saturated or unsaturated hydrocarbon group having 8 to 22 carbon atoms, and m represents an average value of 1 to 100.

3. The second agent composition according to claim 2, wherein component (B) is a combination of (B-1) a polyoxyethylene alkyl ether in which m in general formula (1) is 1 or more and less than 30, and (B-2) a polyoxyethylene alkyl ether in general formula (1) in which m is 30 or more and 100 or less.

4. The second agent composition according to claim 3, wherein the mass ratio of component (B-1) to component (B-2) [(B-1):(B-2)] is 0.5:9.5 to 4:

1.

5. The second agent composition according to any one of claims 1 to 3, wherein the mass ratio of component (C-1) to component (C-2) [(C-1):(C-2)] is 0.5:9.5 to 9.5:0.

5.

6. The second agent composition according to any one of claims 1 to 5, wherein the component (D) is at least one selected from the group consisting of liquid paraffin, liquid isoparaffin, light isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin and squalane.

7. The second agent composition according to any one of claims 1 to 6, wherein the ratio (viscosity 2 / viscosity 1) of the viscosity (viscosity 2) immediately after being discharged from the aerosol container to the viscosity (viscosity 1) before being filled into the aerosol container is 0.80 or more and 1.25 or less.

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