Spray-type hair coloring composition

Abstract

To provide a spray-type hair coloring composition that colors the hair so as to naturally blur the tone between pre-dyed portions and gray hair portions, thereby achieving a natural overall hair tone; enhances hair volume impression; and reduces the risk of discharge failure.SOLUTION: A spray-type hair coloring composition contains (A) a pigment and (B) an inorganic fine particle powder, wherein the ratio (A) / (B) of the content of pigment (A) to the content of inorganic fine particle powder (B) is 0.5 or less.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a spray-type hair colorant composition that can color hair as a whole to a natural color tone, improve the sense of increased volume of hair, and reduce the risk of poor discharge. [Background technology]

[0002] Hair colorants for temporarily coloring hair by attaching a coloring agent such as a pigment to the surface of the hair are widely used because they are easy to color and bleach (wash off) according to the needs of the user, such as when the user wants to color the hair for just one day on a special occasion, or when the user wants to change the hair color for a change of mood on a day off, etc. In particular, spray-type hair colorant compositions that can be used directly in a state discharged from a discharge container are known to be easy for users to use and allow easy operations for coloring hair.

[0003] Known hair colorant compositions include those intended primarily for dyeing gray hair (so-called "gray hair dyes") and those intended for changing the color tone of hair. For example, Patent Document 1 discloses a hair cosmetic (hair colorant) that contains a melanin precursor represented by a specific chemical formula, divalent iron ions, and an anionic film-forming polymer, and is filled into a container such as a pump spray together with a propellant and used to dye gray hair. It is described that repeated application to hair makes gray hair less noticeable. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-114264 A Summary of the Invention [Problem to be solved by the invention]

[0005] In conventional hair dyeing, hair colorant compositions that focus on the coloring effect (dyeability) of gray hair have been widely used, as described in Patent Document 1. However, when gray hair is dyed darker with an emphasis on the coloring effect on gray hair, a difference in color tone occurs between the already dyed parts of the hair and the newly grown gray hair parts, which creates an unnatural color tone for the entire head of hair.

[0006] In addition, for hair including gray hair, it is often required to impart a sense of volume to the entire hair, and a powder carrier is added to the hair colorant composition for the purpose of increasing the volume of the hair. However, such hair colorant compositions have a problem in that they are poorly discharged from the discharge container due to caking caused by the settling of the pigment or powder carrier, and therefore it is an issue to achieve both easy operability for coloring the hair and an improvement in the effect of increasing the volume of the hair.

[0007] Therefore, the object of the present invention is to provide a spray-type hair colorant composition that colors hair in a way that naturally blends the color tones of already dyed and gray hair parts, achieves a natural color tone for the entire head of hair, improves the sense of increased volume of hair, and reduces the risk of poor discharge. [Means for solving the problem]

[0008] As a result of intensive research into the above-mentioned problems, the inventors discovered that by adjusting the compounding ratio of the pigment for coloring and the inorganic fine particle powder, it is possible to achieve a natural color tone for the entire head of hair, improve the sense of increased volume in the hair, and reduce the risk of poor ejection, and thus completed the present invention. That is, the present invention relates to the following spray type hair coloring composition.

[0009] In order to solve the above problems, the spray-type hair colorant composition of the present invention contains (A) a pigment and (B) an inorganic microparticle powder, and is characterized in that the ratio (A) / (B) of the content of the pigment (A) to the content of the inorganic microparticle powder (B) is 0.5 or less. According to the spray type hair colorant composition of the present invention, by increasing the content of the inorganic fine particle powder (B) relative to the pigment (A) for coloring purposes, it is possible to color the hair in a way that naturally blends the color tones of the already dyed and gray hair parts, rather than coloring the gray hair darkly, thereby achieving a natural color tone for the entire head of hair and improving the sense of volume of the hair. In addition, between the pigment (A) and the inorganic fine particle powder (B), the pigment (A) is generally more likely to cause ejection defects, whereas the spray type hair colorant composition of the present invention contains a greater amount of the inorganic fine particle powder (B) than the pigment (A), and therefore the risk of ejection defects can be suppressed.

[0010] In one embodiment of the spray type hair colorant composition of the present invention, the (B) inorganic fine particle powder contains (B1) talc. According to this feature, it is possible to provide a spray type hair coloring composition that not only has a hair volume increasing effect, but also leaves hair with a good feel after use.

[0011] In one embodiment of the spray type hair colorant composition of the present invention, the inorganic fine particle powder (B) contains both (B1) talc and (B2) silica. According to this feature, it is possible to provide a spray-type hair colorant composition that can more effectively achieve both an improved hair volume-increasing effect and a reduced risk of poor discharge.

[0012] In addition, one embodiment of the spray type hair colorant composition of the present invention is characterized in that in the (B) inorganic microparticle powder, the ratio of the content of (B2) silica to the content of (B1) talc, (B2) / (B1), is 0.5 or less. According to this feature, by using (B1) talc as the main component of the inorganic fine particle powder (B), it is possible to provide a spray-type hair colorant composition which can further enhance the effects of increasing hair volume and improving the pleasant feel of hair after use. Effect of the Invention

[0013] According to the present invention, it is possible to provide a spray-type hair colorant composition which colors hair so as to naturally blend the color tones of already dyed and gray hair parts, thereby realizing a natural color tone for the entire head of hair, while improving the sense of increased volume of hair and reducing the risk of poor discharge. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The present invention relates to a spray-type hair coloring composition that is characterized by containing a pigment and an inorganic fine particle powder, and that colors the hair as a whole to have a natural color tone, improves the sense of increased volume of the hair, and reduces the risk of poor discharge.

[0015] Hereinafter, embodiments of the spray type hair coloring composition according to the present invention will be described in detail. The spray type hair colorant composition described in this embodiment is merely an example for explaining the present invention, and the present invention is not limited thereto.

[0016] [Spray-type hair coloring composition] The spray-type hair colorant composition of the present invention is a composition having a coloring mechanism for temporarily adhering various pigments to hair by physical adhesion to color the hair, which is applied to the hair using a device that sprays liquid in the form of mist, foam, etc. using a gas such as high-pressure air or mechanical movement (such as a finger or a piezoelectric element).

[0017] The spray type hair colorant composition of the present invention can be applied to hair using a propellant such as a gas such as high-pressure air, a liquefied gas, or a compressed gas. The ratio of the composition containing the pigment (A) and the inorganic fine particle powder (B) (hereinafter also referred to as the "spray concentrate") to the propellant is not particularly limited and may be appropriately set in light of the intended spray form, for example, spray concentrate:propellant=20:80 to 80:20 (mass ratio). When the propellant ratio is 20 or more, it is possible to eject the propellant firmly, and the pigment can be applied uniformly on the hair. When the propellant ratio is 80 or less, the force of the spray is appropriate, and it is possible to prevent the colorant such as the pigment from scattering and soiling clothes or the surroundings.

[0018] Each component constituting the spray type hair coloring composition of the present invention will be described in detail below.

[0019] <(A) Pigment> A pigment is a powder used for coloring, which is insoluble in water or oil. The pigment that is component (A) in the present invention is used for coloring hair, particularly for coloring hair a color other than white. The type of pigment that is component (A) of the present invention is not particularly limited, but examples thereof include inorganic pigments, organic pigments, daylight fluorescent pigments, natural pigments, as well as dye-resin solid solutions in which a dye is dissolved in a resin, etc. These pigments can be used alone or in appropriate combinations of two or more depending on the desired hair color tone.

[0020] The inorganic pigment is also called a mineral pigment, and is a chemically inorganic pigment. The inorganic pigment of the present invention is also called a coloring pigment (colored pigment), and is selected from those with a high coloring power that colors the color other than white. In other words, the inorganic pigment of the present invention excludes extender pigments and pearl pigments with low coloring power, as well as white pigments, and refers to those other than inorganic fine particle powder, which is component (B) described later.

[0021] Inorganic pigments are made from natural minerals as they are, or by processing or crushing natural minerals, or from compounds of zinc, titanium, lead, iron, copper, chromium, etc. They have good light resistance and heat resistance, and are insoluble in organic solvents. There are various types, but they can be divided by color into red pigments (red iron oxide, etc.), yellow pigments (yellow lead, etc.), green pigments (emerald green, etc.), blue pigments (cobalt blue, etc.), purple pigments (manganese violet, etc.), and black pigments (carbon black, etc.). Specific examples of inorganic pigments include, but are not limited to, red iron oxide, chromium oxide, cobalt oxide, black iron oxide, yellow iron oxide, chromium hydroxide, Prussian blue, carmine, ultramarine, manganese violet, carbon black, aluminum, copper, and gold.

[0022] The organic pigment is a pigment mainly composed of a coloring matter made of an organic compound. Organic pigments are broadly classified into organic color pigments, in which the coloring matter itself is insoluble in water, and lake pigments, in which a water-soluble dye is made insoluble by some means, such as adding a metal salt. Organic pigments have the advantage of being rich in color hues, vivid, and having high coloring power and transparency. Organic pigments are not particularly limited, but examples thereof include Red No. 202, 203, 204, 205, 206, 207, 208, 219, 220, 221, 226, 228, 404, and 405, Orange No. 203, 204, and 401, Yellow No. 4, 205, and 401, and Blue No. 404.

[0023] The above-mentioned daylight fluorescent pigment is a type of organic fluorescent pigment, and can be broadly classified into organic color pigments and powdered solid solutions of fluorescent dyes dissolved in synthetic resins. Daylight fluorescent pigments have the advantage of producing vivid colors under normal light. In addition, their luminance increases when stimulated by light such as ultraviolet light.

[0024] The natural pigment is not particularly limited, but examples thereof include mineral pigments such as clay, natural dye lakes such as madder lake and cochineal lake, azo pigments, and phthalocyanine pigments.

[0025] It is preferable that the pigment (A) of the present invention is at least one selected from the group consisting of carbon black and / or organic pigments, which can provide a sufficient coloring effect, particularly on gray hair.

[0026] The total content of the pigment (A) in the spray type hair colorant composition of the present invention is not particularly limited, but is, for example, 0.1 to 5% by mass. The lower limit is preferably 0.2% by mass or more, more preferably 0.3% by mass or more. The upper limit is preferably 3% by mass or less, more preferably 2% by mass or less, and even more preferably 1% by mass or less. When the total content of the pigment (A) is 0.1% by mass or more, the hair coloring effect can be sufficiently exhibited. When the total content of the pigment (A) is 5% by mass or less, the pigment dispersibility is improved, and it is easy to suppress ejection defects. In particular, by setting the upper limit of the total content of the pigment (A) low, it is easy to color the hair so that the color tone of the already dyed part and the gray hair part of the hair is naturally blended while the hair coloring effect is sufficiently exhibited.

[0027] <(B) Inorganic fine particle powder> The inorganic fine particle powder, which is component (B) in the present invention, is used to increase the volume of hair and to color hair, including gray hair, in a way that naturally blends the color tones of the already dyed and gray hair parts, rather than darkly coloring the hair, including gray hair.

[0028] The inorganic fine particle powder, which is component (B) of the present invention, is a powder of minerals or inorganic compounds and is selected from those having low coloring power. (B) The inorganic fine particle powder is preferably mainly white or gray, or colorless and transparent. Specific examples of (B) inorganic fine particle powders include zinc oxide, titanium oxide, aluminum hydroxide, barium sulfate, hydrous silicate, anhydrous silicic acid (silica), aluminum silicate, talc, kaolin, mica, magnesium carbonate, bentonite, and titanium mica.

[0029] As the inorganic fine particle powder (B) of the present invention, it is particularly preferable to use talc (B1). The talc, which is the component (B1) of the present invention, is a powder of a clay mineral called talc, and its main component is magnesium silicate hydrate. (B1) talc has an adsorption power (adhesive power) to organic matter, so it is highly effective in improving the volume of hair. In addition, (B1) talc has a property of increasing slipperiness, and is highly effective in improving the feel of hair after use.

[0030] It is more preferable that the inorganic fine particle powder (B) of the present invention contains both talc (B1) and silica (B2). Silica, which is the component (B2) of the present invention, is also called silicic anhydride, and is known to be naturally produced or industrially synthesized. In general, it is known that the properties and functions exhibited by silica vary depending on the particle size, and it is known that silica gels when the particle size is smaller than 100 nm. On the other hand, the silica as component (B2) of the present invention is preferably used as a powder having a particle size of 100 nm or more, which allows viscosity adjustment by silica and obtains a light scattering effect, improving the dispersibility of the composition and realizing a natural color tone by light scattering.

[0031] When (B1) talc and (B2) silica are used as the (B) inorganic microparticle powder, the ratio of the content of (B2) silica to the content of (B1) talc, (B2) / (B1), is not particularly limited, but is preferably 0.5 or less, and more preferably 0.3 or less. By using (B1) talc as the main component of (B) the inorganic fine particle powder, the effects of increasing hair volume and improving the pleasant feel of hair after use can be further enhanced.

[0032] The total content of the inorganic fine particle powder (B) in the spray type hair colorant composition of the present invention is not particularly limited, but is, for example, 1 to 25% by mass. The lower limit is preferably 2% by mass or more, more preferably 5% by mass or more. The upper limit is preferably 20% by mass or less, more preferably 15% by mass or less.

[0033] <Content ratio (A) / (B)> The ratio (A) / (B) of the content of the pigment (A) to the content of the inorganic fine particle powder (B) is 0.5 or less, preferably 0.3 or less, and more preferably 0.15 or less. Between the pigment (A) and the inorganic fine particle powder (B), the pigment (A) is generally more likely to cause discharge defects, whereas the spray type hair colorant composition of the present invention contains a greater amount of the inorganic fine particle powder (B) than the pigment (A), and therefore the risk of discharge defects can be reduced. In addition, by increasing the content of the (B) inorganic fine particle powder relative to the (A) pigment, the coloring power of the (A) pigment is relatively weakened, and instead of coloring the hair deeply, the color tones of the already dyed and gray hair parts of the hair are naturally blended, making it possible to achieve a natural color tone for the entire head of hair.

[0034] <Other ingredients> The spray type hair colorant composition of the present invention may contain the following components, if necessary, in addition to the above components. Other components include, for example, resins, surfactants, oily components, propellants such as liquefied petroleum gas (LPG), dimethyl ether (DME), and nitrogen, organic solvents such as ethanol, isopropanol, ethylene glycol, ethyl cellosolve, butyl cellosolve, and methyl acetate, moisturizers such as glycerin, 1,3-butylene glycol, propylene glycol, polyethylene glycol, sodium pyrrolidone carboxylate, sodium lactate, sorbitol, and hyaluronic acid, preservatives such as phenoxyethanol and sodium benzoate, antioxidants such as ascorbic acid and anhydrous sodium sulfite, fragrances, disinfectants, ultraviolet absorbers, animal extracts, and plant extracts.

[0035] <Resin> As other components, the present invention may contain a resin. The type of resin is not particularly limited, but examples include amphoteric resins, anionic resins, and nonionic resins. One or more of these may be used in appropriate combination. The total content of the resin is not particularly limited, but is, for example, 0.1 to 15% by mass. The lower limit of the total content is preferably 0.5% by mass or more. The upper limit of the total content is preferably 10% by mass or less. This allows the spray-type hair colorant composition to have good covering power on hair, friction resistance that does not cause color transfer even with slight friction against hair, and friction resistance (water resistance) when wet with water to be obtained.

[0036] The amphoteric resin is a resin having both a cation and an anion in one molecule. The amphoteric resin is not particularly limited, but examples thereof include amphoteric acrylic polymer compounds. Specific examples of the amphoteric acrylic polymer include compounds obtained by copolymerizing dialkylaminoethyl methacrylate, dialkylaminoethyl acrylate, diacetone acrylamide, etc. with acrylic acid, methacrylic acid, acrylic acid alkyl ester, methacrylic acid alkyl ester, etc. and amphoterizing them with halogenated acetic acid, hydroxypropyl acrylate / butylaminoethyl methacrylate / acrylic acid octylamide copolymer, etc. Commercially available products include Mitsubishi Chemical's Yukaformer AM75-201, 202, 204, R205, R205S, 206, W, WH, and National Starch's Amphomer.

[0037] The anionic resin is a resin that has anionic electrical properties when it is in an aqueous solution. The anionic resin is not particularly limited, but examples thereof include vinyl acetate ether polymer compounds, acidic polyvinyl acetate polymer compounds, and acidic acrylic polymer compounds. Specific examples of the vinyl acetate ether polymer compounds include lower alkyl half esters of methyl vinyl ether / maleic anhydride copolymers. Commercially available products include GANTREZ ES-225, ES-335, and ES-425 from GAF. Specific examples of the acidic polyvinyl acetate polymer compounds include vinyl acetate / crotonic acid copolymers, vinyl acetate / crotonic acid / vinyl neodecanoate copolymers, vinyl acetate / crotonic acid / vinyl propionate copolymers, and vinyl acetate / N-vinyl-5-methyl-2-oxazoline copolymers. Examples of commercially available products include Rubyset CA and CAP from BASF, Resin 28-1310 and 28-2930 from National Starch, and Durex from Dow Chemical. Specific examples of the acidic acrylic polymer compound include copolymers of acrylic acid and / or methacrylic acid with alkyl acrylate and / or alkyl methacrylate, and copolymers of acrylic acid / alkyl acrylate / N-alkylacrylamide. Examples of commercially available products include PLASCYSE L-53P, 53D, 7400, 7410, 7420, 7480, 53PB, and 8011 from GOO Chemical, and Ultrahold 8 from BASF.

[0038] The nonionic resin is a resin that does not become ions when dissolved in an aqueous solution. The nonionic resin is not particularly limited, but examples thereof include polyvinylpyrrolidone-based polymer compounds. Specific examples of the polyvinylpyrrolidone-based polymer compounds include polyvinylpyrrolidone, vinylpyrrolidone / vinyl acetate copolymer, polyvinylpyrrolidone / methacrylic acid / methacrylic acid ester copolymer, vinylpyrrolidone / vinyl acetate / alkylaminoacrylate copolymer, etc. Commercially available products include Luviscol K, VA, and VAP from BASF, and PVPX and PVP / VA from GAF.

[0039] <Surfactant> As other components, the present invention may contain a surfactant. The type of surfactant is not particularly limited, but examples include nonionic surfactants (nonionic surfactants), anionic surfactants, cationic surfactants, and amphoteric surfactants. One or more of these may be used in appropriate combination. The content of the surfactant is not particularly limited, but is, for example, 0.01 to 10% by mass. The lower limit of the content is preferably 0.05% by mass or more. The upper limit of the content is preferably 5% by mass or less. This reduces stiffness when the spray-type hair colorant composition is used on hair, and provides good covering power for hair and abrasion resistance that prevents color transfer even with slight friction against hair. In the following description, POE stands for polyoxyethylene chain, POP stands for polyoxypropylene chain, and the numbers in parentheses following each indicate the number of moles added. The number in parentheses following alkyl indicates the number of carbon atoms in the fatty acid chain.

[0040] Examples of the nonionic surfactants include POE alkyl ethers, POE alkyl phenyl ethers, POE·POP alkyl ethers, POE sorbitan fatty acid esters, POE mono fatty acid esters, POE glycerin fatty acid esters, polyglycerin fatty acid esters, monoglycerin fatty acid esters, sorbitan fatty acid esters, sucrose fatty acid esters, alkyl polyglucosides, etc. Specific examples of POE alkyl ethers include POE lauryl ether, POE cetyl ether, POE stearyl ether, POE behenyl ether, POE lanolin, POE phytosterol, etc. The number of repeating units of POE and POP is, for example, 2 to 100, and any of them can be used as long as they exhibit a surface active effect.

[0041] The content of the nonionic surfactant in the spray type hair colorant composition is not particularly limited, but is preferably 0.01 to 10% by mass. The lower limit is more preferably 0.03% by mass or more, and even more preferably 0.05% by mass or more. The upper limit is more preferably 7.5% by mass or less, and even more preferably 5% by mass or less.

[0042] Examples of the anionic surfactant include alkyl ether sulfates, POE alkyl ether sulfates, alkyl sulfates, alkenyl ether sulfates, alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfonic acid salts, N-acylamino acid surfactants, mono- or di-phosphate surfactants, and sulfosuccinates. The counter ion of the anionic group of these surfactants may be, for example, any of sodium ion, potassium ion, and triethanolamine.

[0043] More specifically, examples include sodium lauryl sulfate, sodium myristyl sulfate, potassium lauryl sulfate, ammonium lauryl sulfate, triethanolamine lauryl sulfate, sodium cetyl sulfate, sodium stearyl sulfate, sodium POE lauryl ether sulfate, triethanolamine POE lauryl ether sulfate, ammonium POE lauryl ether sulfate, sodium POE stearyl ether sulfate, sodium stearoyl methyl taurine, triethanolamine dodecylbenzenesulfonate, sodium tetradecenesulfonate, sodium lauryl phosphate, POE lauryl ether phosphate and salts thereof, N-lauroyl glutamate salts (such as sodium lauroyl glutamate), N-lauroyl methyl-β-alanine salts, N-acyl glycine salts, N-acyl glutamate salts, higher fatty acids such as lauric acid and myristic acid, and salts of these higher fatty acids. One or more of these may be used.

[0044] The content of the anionic surfactant in the spray type hair colorant composition is not particularly limited, but is preferably 0.01 to 10% by mass. The lower limit is more preferably 0.03% by mass or more, and even more preferably 0.05% by mass or more. The upper limit is more preferably 7.5% by mass or less, and even more preferably 5% by mass or less.

[0045] Examples of the cationic surfactant include alkyl quaternary ammonium salts such as monoalkyl-type quaternary ammonium salts, dialkyl-type quaternary ammonium salts, trialkyl-type quaternary ammonium salts, benzalkonium-type quaternary ammonium salts, and monoalkyl ether-type quaternary ammonium salts; amine salts such as alkylamine salts, fatty acid amide amine salts, ester-containing tertiary amine salts, and arcobel-type tertiary amine salts; cyclic quaternary ammonium salts such as alkylpyridinium salts and alkylisoquinolium salts; and benzethonium chloride.

[0046] Preferred are alkyl quaternary ammonium salts, more preferred are monoalkyl-type quaternary ammonium salts and dialkyl-type quaternary ammonium salts, and particularly preferred are monoalkyl-type quaternary ammonium salts.

[0047] From the viewpoint of formulation stability, examples of monoalkyl-type quaternary ammonium salts include lauryl trimethyl ammonium chloride, lauryl trimethyl ammonium bromide, alkyl (16,18) trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, cetyl trimethyl ammonium bromide, cetyl trimethyl ammonium saccharin, stearyl trimethyl ammonium chloride, stearyl trimethyl ammonium bromide, behenyl trimethyl ammonium chloride, stearyl trimethyl ammonium saccharin, alkyl (28) trimethyl ammonium chloride, diPOE (2) oleyl methyl ammonium chloride, diPOE stearyl methyl ammonium chloride, POE (1) POP (25) diethyl methyl ammonium chloride, POP methyl diethyl ammonium chloride, methacryloyloxyethyl trimethyl ammonium chloride, behenyl trimethyl ammonium methyl sulfate, etc. Particularly preferred are stearyl trimethyl ammonium chloride, alkyl (16,18) trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, and behenyl trimethyl ammonium chloride.

[0048] Examples of dialkyl-type quaternary ammonium salts include dialkyl(12-15)dimethylammonium chloride, dialkyl(12-18)dimethylammonium chloride, dialkyl(14-18)dimethylammonium chloride, dicocoyl dimethylammonium chloride, dicetyl dimethylammonium chloride, distearyl dimethylammonium chloride, and isostearyl lauryl dimethylammonium chloride.

[0049] The content of the cationic surfactant in the spray type hair colorant composition is not particularly limited, but is preferably 0.01 to 10% by mass. The lower limit is more preferably 0.03% by mass or more, and even more preferably 0.05% by mass or more. The upper limit is more preferably 7.5% by mass or less, and even more preferably 5% by mass or less.

[0050] Examples of the amphoteric surfactant include amino acid type amphoteric surfactants and betaine type amphoteric surfactants.

[0051] Specific examples of the amino acid type amphoteric surfactant include, for example, glycine type amphoteric surfactant, aminopropionic acid type amphoteric surfactant, etc. Specific examples of the glycine type amphoteric surfactant include N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium (sodium lauroamphoacetate), 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, undecylhydroxyethylimidazolinium betaine sodium, alkyldiaminoethylglycine hydrochloride, N-coconut oil fatty acid acyl-N'-carboxyethyl-N'-hydroxyethylethylenediamine sodium, N-coconut oil fatty acid acyl-N'-carboxyethoxyethyl-N'-carboxyethylethylenediamine disodium, N-coconut oil fatty acid acyl-N'-carboxymethoxyethyl-N'-carboxymethylethylenediamine disodium, lauryldiaminoethylglycine sodium, palm oil fatty acid acyl-N-carboxyethyl-N-hydroxyethylethylenediamine sodium, etc. Specific examples of the aminopropionic acid type amphoteric surfactant include sodium laurylaminopropionate, sodium laurylaminodipropionate, and triethanolamine laurylaminopropionate.

[0052] Specific examples of betaine-type amphoteric surfactants include aminoacetic acid betaine-type amphoteric surfactants and sulfobetaine-type amphoteric surfactants. Specific examples of aminoacetic acid betaine-type amphoteric surfactants include coconut oil alkyl betaine, lauryl dimethylaminoacetic acid betaine, myristyl dimethylaminoacetic acid betaine, stearyl dimethylaminoacetic acid betaine, sodium stearyl dimethyl betaine, coconut oil fatty acid amidopropyl betaine, palm oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, ricinoleic acid amidopropyl betaine, and stearyl dihydroxyethyl betaine. Specific examples of sulfobetaine-type amphoteric surfactants include lauryl hydroxysulfobetaine.

[0053] <Oily ingredients> Examples of oily components include higher alcohols, fats and oils, waxes, hydrocarbons, higher fatty acids, esters, silicone oils, fluorine oils, etc. One or more of these oily components can be selected and used.

[0054] Examples of higher alcohols include cetyl alcohol (cetanol), stearyl alcohol, cetostearyl alcohol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, arachyl alcohol, behenyl alcohol, lauryl alcohol, myristyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, phytosterol, phytostanol, cholesterol, cholestanol, lanosterol, and ergosterol.

[0055] The fats and oils are triglycerides, i.e. triesters of fatty acids and glycerin. Examples of the fats and oils include olive oil, rosehip oil, camellia oil, shea butter, macadamia nut oil, almond oil, tea seed oil, sasanqua oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, beef tallow, cacao butter, corn oil, peanut oil, rapeseed oil, rice bran oil, rice germ oil, wheat germ oil, pearl barley oil, grape seed oil, avocado oil, carrot oil, castor oil, linseed oil, coconut oil, mink oil, egg yolk oil, etc.

[0056] Waxes are esters of higher fatty acids and higher alcohols, such as beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, spermaceti, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, bayberry wax, ivory wax, kapok wax, and shellac wax.

[0057] Hydrocarbons are compounds consisting of carbon and hydrogen. Examples include liquid paraffin, paraffin, microcrystalline wax, petrolatum, isoparaffins, ozokerite, ceresin, polyethylene, α-olefin oligomer, polybutene, synthetic squalane, squalene, hydrogenated squalane, limonene, and turpentine.

[0058] Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, and lanolin fatty acid.

[0059] Esters are compounds obtained by dehydration reaction between fatty acids and alcohols. Examples include diisopropyl adipate, 2-hexyldecyl adipate, isopropyl myristate, myristyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, diisopropyl sebacate, isopropyl palmitate, 2-ethylhexyl palmitate, cetyl ethylhexanoate, butyl stearate, isocetyl isostearate, hexyl laurate, decyl oleate, fatty acid (C10-30) (cholesteryl / lanosteryl), lauryl lactate, octyldodecyl lactate, lanolin acetate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, lanolin derivatives, etc.

[0060] Silicone oil is a synthetic polymer in which silicon with organic groups and oxygen are alternately linked by chemical bonds. Examples include dimethylpolysiloxane (INCI name: dimethicone), dimethylpolysiloxane with hydroxyl end groups (INCI name: dimethiconol), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, polyether-modified silicone, highly polymerized silicone with an average degree of polymerization of 650 to 10,000, amino-modified silicone, betaine-modified silicone, alkyl-modified silicone, alkoxy-modified silicone, mercapto-modified silicone, carboxy-modified silicone, and fluorine-modified silicone.

[0061] Of the above, examples of amino-modified silicones include aminopropylmethylsiloxane-dimethylsiloxane copolymer (INCI name: aminopropyl dimethicone), aminoethylaminopropylsiloxane-dimethylsiloxane copolymer (INCI name: amodimethicone), and aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer (INCI name: trimethylsilylamodimethicone).

[0062] The content of the oily component in the spray type hair colorant composition of the present invention is not particularly limited, but is preferably 0.1 to 30% by mass. The lower limit is more preferably 0.2% by mass or more, and even more preferably 0.5% by mass or more. The upper limit is more preferably 20% by mass or less, and even more preferably 10% by mass or less. EXAMPLES

[0063] EXAMPLES The present invention will be explained in more detail below by showing examples of the spray type hair coloring composition of the present invention, but the present invention is not limited to these examples in any way. The following commercially available products were used for the following components in the table. (Alkyl acrylate / diacetone acrylamide) copolymer AMP: GOO Chemical Industry Co., Ltd., "Plus Size L-53D Color U" (resin) Oleth-10: Nikkol BO-10V (non-ionic surfactant) manufactured by Nikko Chemicals Co., Ltd.

[0064] The spray type hair colorant compositions of the present invention according to the examples and comparative examples were obtained with the contents (unit: mass %) shown in Tables 1 and 2. The color tone, volume-increasing effect, discharge failure, and feel of the hair after use were evaluated according to the following evaluation methods and evaluation criteria. The results are shown in Tables 1 and 2. Unless otherwise specified, the human hair bundle used in the evaluation test of the present invention is a hair bundle of model number "BM-MIX-K70-A" (70% gray hair, 30% black hair: manufactured by Beaulux) (hereinafter referred to as "hair bundle sample") in order to confirm the effect on hair including gray hair.

[0065] <How to evaluate color tone> The color tone was evaluated by a sensory test using a hair bundle sample. The lower 5 cm of a hair bundle sample (10 cm long) was treated with hair coloring, and 0.1 g of the spray type hair coloring composition according to the Examples and Comparative Examples was applied to 1 g of the hair bundle sample, and then the sample was thoroughly dried and evaluated for color tone by visual inspection by 10 panelists. The results were shown as the average score of the 10 panelists. <Evaluation criteria> 5: The gray hair is naturally blended and blends very well with the already dyed areas. 4: Gray hair is naturally blended and blends well with previously dyed areas. 3: The gray hair is blurred and blends well with the already dyed areas. 2: The gray hair is not blurred and does not blend well with the already dyed areas. 1: The gray hair is not blurred and does not blend well with the already dyed areas.

[0066] <How to evaluate the volume-up effect> The volume-increasing effect was evaluated by a sensory test using hair bundle samples. The spray type hair colorant compositions according to the Examples and Comparative Examples were applied to 1 g of a hair bundle sample (length 10 cm) so that 0.1 g of each composition adhered to the hair, and then the hair was thoroughly dried. A sensory test was then carried out by 10 panelists using their hands to evaluate the volume-increasing effect. The results were shown as the average scores of the 10 panelists. <Evaluation criteria> 5: I feel it has a great volume-boosting effect. 4: I can fully feel the volume-enhancing effect. 3: I feel a volume-boosting effect. 2: I barely notice any volume-enhancing effect. 1: I don't feel any volume-enhancing effect.

[0067] <Method for evaluating discharge defects> The spray-type hair colorant composition (spray concentrate) of the Examples and Comparative Examples and the propellant (DME gas) were filled into a discharge container in a mass ratio of 30:70, and left to stand in a thermostatic chamber at 50°C for one month. The container was then manually shaken up and down 10 times before the entire amount was discharged. <Evaluation criteria> 5: There is absolutely no clogging and the entire amount can be discharged. 4: Clogging rarely occurs, and the entire amount can be discharged. 3: There is a tendency for clogging, but the entire amount can be discharged. 2: Clogging occurs, making it difficult to dispense the entire amount. 1: Clogging occurs, making dispensing itself difficult.

[0068] <How to evaluate the feel of hair after use> The feel of the hair after use was evaluated by a sensory test using a hair bundle sample. The spray type hair colorant compositions according to the Examples and Comparative Examples were applied to a 1 g hair bundle sample (length 10 cm) so that 0.1 g of each composition adhered to the hair, and then the hair was thoroughly dried. A sensory test was then carried out by 10 panelists using their hands to evaluate the feel of the hair after use. The results are shown as the average scores of the 10 panelists. <Evaluation criteria> 5: No stiffness at all. 4: Almost no stiffness. 3: Less stiffness. 2: Feels slightly stiff. 1: Feels stiff.

[0069] [Table 1]

[0070] [Table 2]

[0071] As shown in Tables 1 and 2, the spray type hair colorant compositions of the present invention in Examples 1 to 8 were evaluated as having good results in terms of color tone, volume-increasing effect, and discharge failure, with scores of "3" to "5." In addition, the spray type hair colorant compositions of the present invention in Examples 1 to 7 were also evaluated as having good results in terms of the feel of the hair after use, with scores of "3" to "5."

[0072] Based on Table 1, the results of comparing Examples 1 to 3 with each of the comparative examples will be described.

[0073] Comparative Example 1 did not contain (B) inorganic fine particle powder, and the evaluations of the volume-increasing effect and the feel of hair after use were "1", while Examples 1 to 3 were "3" or "5", showing good results. Therefore, it was found that the inclusion of (B) inorganic fine particle powder in a spray-type hair colorant composition can provide the volume-increasing effect and the effect of improving the feel of hair after use.

[0074] In Comparative Example 2, the total content of the pigment (A) is the same as in Example 1, but the total content of the inorganic fine particle powder (B) is less than that in Example 1, and the mass ratio (A / B) of the content of the pigment (A) to the content of the inorganic fine particle powder (B) is 0.5 or more. In Comparative Example 2, the evaluations of the color tone and discharge failure were "5", but the evaluations of the volume-increasing effect and the feel of the hair after use were "2", and it was found that sufficient effects were not obtained compared to Examples 1 to 3.

[0075] In Comparative Example 3, the total content of the inorganic fine particle powder (B) is the same as in Example 2, but the total content of the pigment (A) is greater than that in Example 2, and the mass ratio (A / B) of the content of the pigment (A) to the content of the inorganic fine particle powder (B) is 0.5 or more. In Comparative Example 3, the volume-increasing effect and the feel of the hair after use were evaluated as "3", but the color tone and discharge failure were evaluated as "1", and it was found that sufficient effects were not obtained compared to Examples 1 to 3.

[0076] Therefore, the comparison results between Examples 1 to 3 and Comparative Examples 2 and 3 demonstrate that by setting the mass ratio (A / B) of the content of the pigment (A) to the content of the inorganic microparticle powder (B) within a specified range, it is possible to provide a spray-type hair colorant composition that achieves a natural color tone for the entire head of hair, improves the sense of increased volume in the hair, and reduces the risk of poor discharge.

[0077] Furthermore, from the results of Examples 1 to 3 shown in Table 1, it was found that when the total content of the (A) pigment is low (particularly 1 mass % or less) or the mass ratio (A / B) of the content of the (A) pigment to the content of the (B) inorganic microparticle powder is a predetermined value or less (particularly 0.3 or less), the volume-increasing effect of the (B) inorganic microparticle powder (mainly (B1) talc) and the effect of improving the feel of the hair after use are fully exhibited, and the evaluation in these respects is higher.

[0078] Furthermore, based on Table 2, the results of comparing Example 1 with Examples 4 to 8 will be described. Examples 1, 4 to 8 shown in Table 2 show examples in which the mass ratio (A / B) of the content of pigment (A) to the total content of pigment (A) and the content of inorganic fine particle powder (B) is constant, and the ratio (B2) / (B1) of the content of silica (B2) to the content of talc (B1) is different.

[0079] From Table 2, it was found that in Examples 7 and 8, which contained only either (B1) talc or (B2) silica as the inorganic fine particle powder (B), the evaluations of poor discharge and hair feel after use were lower than those of Example 1. Therefore, it was shown that it is preferable for the spray type hair colorant composition of the present invention to contain both (B1) talc and (B2) silica as the inorganic fine particle powder (B).

[0080] Furthermore, from the results of Examples 1 and 4 to 6, it was found that when the ratio (B2) / (B1) of the content of silica (B2) to the content of talc (B1) was a predetermined value or less (0.5 or less), the evaluations for color tone, volume-increasing effect, ejection failure, and feel of hair after use were all "4" or "5," indicating good results. In particular, it has been found that the spray hair colorant composition of the present invention, which uses (B1) talc as (B) inorganic microparticle powder, not only receives high marks for color tone, volume-increasing effect, and discharge failure, but also receives high marks for the feel of the hair after use. [Industrial Applicability]

[0081] When the spray-type hair colorant composition of the present invention is used on hair, particularly hair including gray hair, it is possible to color the hair as a whole to a natural color tone and to improve the sense of increased volume of the hair. In addition, by mixing the spray type hair colorant composition of the present invention with a propellant, the risk of poor ejection can be reduced and the composition can be used for convenient hair coloring for users.

Claims

1. (A) a pigment and (B) an inorganic fine particle powder, A spray type hair colorant composition, characterized in that the ratio (A) / (B) of the content of the pigment (A) to the content of the inorganic fine particle powder (B) is 0.5 or less.

2. 2. The spray type hair colorant composition according to claim 1, wherein the inorganic fine particle powder (B) contains (B1) talc.

3. 3. The spray type hair colorant composition according to claim 2, wherein the inorganic fine particle powder (B) contains both (B1) talc and (B2) silica.

4. 4. The spray hair colorant composition according to claim 3, wherein in the inorganic fine particle powder (B), the ratio (B2) / (B1) of the content of the silica (B2) to the content of the talc (B1) is 0.5 or less.

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