Aerosol-type hair cosmetic

Abstract

To provide an aerosol hair cosmetic that has a bright color tone and allows a user to feel such a color travel effect that the color tone changes depending on the angle of viewing.SOLUTION: An aerosol hair cosmetic contains the following (A)-(C), wherein the percentage of a (B) propellant being 55 mass% or more and 99 mass% or less relative to the total amount of materials filled into an aerosol container: (A) a color travel pigment with a median diameter of 1 μm or more and 50 μm or less; (B) a propellant; and (C) a film formation agent.SELECTED DRAWING: None

Description

【Technical Field】 【0001】 The present invention relates to an aerosol-type hair cosmetic. 【Background Art】 【0002】 A temporary hair coloring agent that temporarily colors hair is a product that allows users to enjoy a good hair color without undergoing a bleaching process. Temporary hair coloring agents generally use pigments instead of dyes for coloring. Temporary hair coloring agents color (develop color) due to the pigments attached to the hair, and can be restored to the original hair color by washing the pigments attached to the hair. Temporary hair coloring agents are widely used in various scenes because the hair color can be easily changed. 【0003】 Among pigments, pearl pigments exhibit an interference color and can provide a unique and highly developed color tone. In recent years, color travel pigments having a color travel effect in which the color tone changes depending on the viewing angle have been developed (Patent Document 1), and their high visual effect has attracted attention. Different from general pigments, color travel pigments change to a whitish color tone when they overlap each other, so there is a drawback that it becomes difficult to feel the color travel effect. In addition, color travel pigments are likely to show a color change when the background is dark such as black, and are less likely to show a color change when the background is bright such as white. 【0004】 When a hair cosmetic containing a pigment adheres to the hair as large particles, the pigments overlap each other after drying. In addition, when a hair cosmetic containing a pigment adheres to the hair as large particles, the hair may feel rough. In order to make the hair cosmetic containing a pigment adhere to the hair as small particles, it is conceivable to spray from an actuator with a small nozzle diameter. However, when the nozzle diameter is reduced, the solid pigment is likely to clog the nozzle, making uniform spraying difficult and, in some cases, even preventing spraying. Therefore, aerosol-type hair cosmetics using color travel pigments are required to be able to spray in small droplets without reducing the nozzle diameter in order to exhibit vivid colors. [Prior art documents] [Patent Documents] 【0005】 [Patent Document 1] Special Publication No. 2008-505959 [Overview of the Initiative] [Problems that the invention aims to solve] 【0006】 The objective is to provide an aerosol-type hair cosmetic that has vivid colors and exhibits a color travel effect where the color changes depending on the viewing angle. [Means for solving the problem] 【0007】 In other words, the main components of the present invention are as follows: 1. An aerosol-type hair cosmetic characterized by containing the following (A) to (C), wherein the proportion of the propellant (B) relative to the total filler material filled in the aerosol container is 55% by mass or more and 99% by mass or less. (A) Color travel pigments with a median diameter of 1 μm or more and 50 μm or less (B) Propellant (C) Film-forming agent 2. The aerosol-type hair cosmetic according to 1, characterized in that (A) the median diameter of the color travel pigment is 10 μm or more and 35 μm or less. 3. The aerosol-type hair cosmetic according to 1. or 2., characterized in that the blending ratio of (A) color travel pigment to the cosmetic concentrate is 5% by mass or more and 15% by mass or less. 4. (C) An aerosol-type hair cosmetic according to any one of 1 to 3, characterized in that the film-forming agent contains either an amphoteric polymer, an anionic polymer, or both. 5. An aerosol-type hair cosmetic according to any one of 1 to 4, characterized in that the proportion of (B) propellant to the total amount of filling material filled in an aerosol-type container is 65% by mass or more and 90% by mass or less. 6. An aerosol-type hair cosmetic according to any one of 1 to 5, characterized in that the ratio (D / d50) of the nozzle diameter (D (μm)) of the actuator attached to the aerosol-type container to the median diameter (d50 (μm)) of the color travel pigment is 5 or more and 500 or less. [Effects of the Invention] 【0008】 The aerosol-type hair cosmetic of the present invention does not require prior bleaching of the hair, and the hair color returns to its original color after washing, making it very easy to change hair color for a short period of time. The aerosol-type hair cosmetic of the present invention can be sprayed in small particles, allowing the color travel pigment to adhere to the hair with minimal overlap. Therefore, the aerosol-type hair cosmetic of the present invention can exhibit a high color travel effect with vivid colors. Because the color of the aerosol-type hair cosmetic of the present invention changes depending on the angle, different colors appear in the crown of the head where the hair flows roughly horizontally and in the sides of the head where the hair flows roughly vertically. Furthermore, the color changes in various ways simply by the movement of the hair, such as walking or wind, creating a fantastic and beautiful atmosphere. The aerosol-type hair cosmetic of the present invention has minimal stiffness during use and offers excellent usability. The aerosol-type hair cosmetic of the present invention can be sprayed in small particles without reducing the nozzle diameter, thus reducing the likelihood of nozzle clogging. [Modes for carrying out the invention] 【0009】 The present invention relates to an aerosol-type hair cosmetic containing the following (A) to (C), wherein the proportion of the propellant (B) relative to the total filler material filled in an aerosol-type container is 55% by mass or more and 99% by mass or less. (A) Color travel pigments with a median diameter of 1 μm or more and 50 μm or less (B) Propellant (C) Film-forming agent 【0010】 (A) Color Travel Pigments A color travel pigment is a pigment in which two or more layers with different refractive indices are laminated on a substrate at a controlled thickness. The reflected light from each interface interferes with each other, causing the reflected light to exhibit different color tones depending on the viewing angle. For example, Xirona (registered trademark, Merck) is a brand of color travel pigment that exhibits a color shift effect depending on the viewing angle, and its main component is either natural mica coated with various TiO2 layers, SiO2, or calcium aluminum borosilicate flakes. Color travel pigments exhibit more vivid colors when the substrate is light-absorbing (dark colors such as black), and become whitish when the substrate is light-reflective (light colors such as white). This is because, when the substrate is light-reflective, the reflected light from the substrate surface mixes with the reflected light from the color travel pigment. Therefore, the aerosol-type hair cosmetic of the present invention is preferably applied to dark-colored hair, and more preferably to black hair. Therefore, if the hair is light in color due to bleaching, dyeing, etc., it is preferable, from the viewpoint of color development, to apply a dark-colored temporary hair colorant such as black to the hair and then apply the aerosol-type hair cosmetic of the present invention on top of it. Alternatively, the aerosol-type hair cosmetic of the present invention may contain a dark-colored pigment. 【0011】 The color travel pigment used in this invention has a median diameter (d50) of 1 μm to 50 μm. A median diameter within this range provides excellent color development, reduces hair stiffness, and minimizes nozzle clogging. The median diameter of the color travel pigment is preferably 10 μm or more, and more preferably 15 μm or more. Furthermore, it is preferably 35 μm or less, and more preferably 30 μm or less. The median diameter is the 50% particle size of the volume distribution, and this value can be obtained, for example, by measuring a 10% ethanol dispersion of the pigment using a laser diffraction scattering particle size distribution analyzer (Microtrac MT3000 EXII, manufactured by Microtrac-Bell). The color travel pigment used in the present invention is not particularly limited, and for example, Xirona (registered trademark, Merck), Firemist (registered trademark, BASF), etc. can be used. 【0012】 The amount of color travel pigment added to the cosmetic base (fillers other than the propellant) is preferably 5% by mass or more and 15% by mass or less, from the viewpoint of color development. When the amount of color travel pigment added to the cosmetic base is 5% by mass or more, the color development is excellent. On the other hand, when this amount is 15% by mass or less, it is possible to prevent the color travel pigment from overlapping and resulting in a whitish tone. The amount of color travel pigment added to the cosmetic base is preferably 5.5% by mass or more, more preferably 6% by mass or more. Furthermore, it is preferably 14% by mass or less, and more preferably 13% by mass or less. 【0013】 The aerosol-type hair cosmetic composition of the present invention may use two or more color travel pigments in combination depending on the desired color development, but it is preferable to use only one color travel pigment. When two or more color travel pigments are included, each of the two or more color travel pigments has a median diameter of 1 μm or more and 50 μm or less. Furthermore, the median diameters of the multiple color travel pigments included may be the same or different. 【0014】 (B) Propellant As propellants, those used in aerosol-type cosmetics can be used without particular limitation, such as dimethyl ether (DME), liquefied petroleum gas (LPG), isopentane, carbon dioxide, nitrogen gas, and compressed air, and two or more can be used in combination. Among these, DME or LPG is preferred, and DME is more preferred. DME is a polar compound and has excellent solubility for organic compounds such as (C) film-forming agents, so pigment aggregation is less likely to occur. LPG has excellent volatility, so the particles that adhere to the hair evaporate quickly, and the particles do not easily combine and become larger on the hair. 【0015】 The aerosol cosmetic of the present invention contains (B) an aerosol agent in an amount of 55% by mass or more and 99% by mass or less based on the total amount of the filling material (the total of the cosmetic stock solution and the aerosol agent) filled in the aerosol container. By containing (B) the aerosol agent in a proportion of 55% by mass or more and 99% by mass or less based on the total amount of the filling material, the aerosol cosmetic of the present invention can be ejected in small particles from the nozzle. From the viewpoint of making the ejected particles smaller, the content rate of this aerosol agent is preferably 60% by mass or more, and more preferably 65% by mass or more. Further, from the viewpoint of color development property, the blending ratio of this aerosol agent is preferably 95% by mass or less, more preferably 90% by mass or less, and even more preferably 85% by mass or less. 【0016】 (C) Film-forming agent The film-forming agent adheres to the hair surface together with the color travel pigment and forms a film for fixing the color travel pigment to the hair. The film-forming agent is not particularly limited as long as it can form a film in which the color travel pigment is dispersed, and examples thereof include anionic polymers, cationic polymers, nonionic polymers, amphoteric polymers, and the like. 【0017】 Examples of the anionic polymer include xanthan gum, carrageenan, sodium alginate, gum arabic, pectin, carboxyvinyl polymer, alkyl acrylate copolymer, alkyl acrylate copolymer AMP, methyl vinyl ether / maleic anhydride alkyl half ester copolymer, vinyl acetate / crotonic acid copolymer, vinyl acetate / crotonic acid / vinyl neodecanoate copolymer, vinyl acetate / crotonic acid / vinyl propionate copolymer, vinyl acetate / N-vinyl-5-methyl-2-oxazoline copolymer, vinyl acetate / vinyl maleate / isobornyl acrylate copolymer, (acrylates / diacetone acrylamide) copolymer, (acrylates / diacetone acrylamide) copolymer AMP, (alkyl acrylate / octyl acrylamide) copolymer, (ethyl betaine methacrylate / acrylates) copolymer, and the like. These can be used alone or in combination of two or more. 【0018】 Examples of cationic polymers include hydroxyethylcellulose, hydroxyethylcellulose dimethyldiallylammonium chloride, hydroxyethylcellulose dimethyldiallylammonium chloride, O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose chloride, guar hydroxypropyltrimonium chloride, hydroxypropylguar hydroxypropyltrimonium chloride, caesalpinia spinosa hydroxypropyltrimonium chloride, locust bean hydroxypropyltrimonium chloride, cassia hydroxypropyltrimonium chloride, fenugreek hydroxypropyltrimonium chloride, hydroxypropyltrimonium chloride, polydimethylmethylene piperidinium chloride, dimethyldiallylammonium chloride / acrylamide copolymer, vinylpyrrolidone / N,N-dimethylaminoethyl methacrylate copolymer diethyl sulfate, vinylpyrrolidone / methylvinylimidazolium copolymer, ethyl[(methacryloyloxy)ethyl]dimethylammonium ethyl sulfate / N,N-dimethylacrylamide / polyethylene glycol dimethacrylate copolymer, and the like. These can be used individually or in combination of two or more types. 【0019】 Examples of nonionic polymers include hydroxyethylcellulose, hydroxypropylmethylcellulose, hydroxypropylcellulose, methylcellulose, highly polymerized polyethylene glycol, polyvinyl alcohol, polyvinylpyrrolidone, vinylpyrrolidone / vinyl acetate copolymer, vinylpyrrolidone / methacrylic acid / methacrylic acid ester copolymer, vinylpyrrolidone / vinyl acetate / alkylaminoacrylate copolymer, vinylpyrrolidone / vinyl acetate / vinyl propionate copolymer, dimethylhydantoin formaldehyde resin, poly(meth)acrylic acid, (meth)acrylic acid copolymer, poly(meth)acrylic acid ester, (meth)acrylic acid ester copolymer, poly(meth)acrylamide, (meth)acrylamide copolymer, dextrin, galactan, pullulan, etc. These can be used individually or in combination of two or more. 【0020】 Examples of the amphoteric polymer include N-methacryloylethyl N,N-dimethylammonium α-N-methylcarboxy betaine / butyl methacrylate copolymer, (ethyl betaine methacrylate / acrylates) copolymer, hydroxypropyl acrylate / butyl methacrylate aminoethyl / octyl acrylamide copolymer, dimethyldiallylammonium chloride / acrylic acid copolymer, terpolymer of dimethyldiallylammonium chloride / acrylamide / acrylic acid, acrylic acid / methyl acrylate / methacrylamidopropyltrimethylammonium chloride copolymer, hydroxypropyl acrylate / butyl methacrylate aminoethyl / octyl acrylamide copolymer, etc. These can be used alone or in combination of two or more. 【0021】 From the viewpoints of water resistance, abrasion resistance, etc., the film-forming agent preferably contains either or both of an anionic polymer and an amphoteric polymer, and more preferably contains an amphoteric polymer. Specifically, as the anionic polymer, alkyl acrylate copolymer AMP, (acrylates / diacetone acrylamide) copolymer, (acrylates / diacetone acrylamide) copolymer AMP, (alkyl acrylate / octyl acrylamide) copolymer, (ethyl betaine methacrylate / acrylates) copolymer are particularly preferable. As the amphoteric polymer, N-methacryloylethyl N,N-dimethylammonium α-N-methylcarboxy betaine / butyl methacrylate copolymer, (ethyl betaine methacrylate / acrylates) copolymer, hydroxypropyl acrylate / butyl methacrylate aminoethyl / octyl acrylamide copolymer are particularly preferable. The amount of film-forming agent added is preferably 0.5% by mass or more and 10% by mass or less relative to the cosmetic base (fillers other than propellants), from the viewpoint of balancing abrasion resistance and water resistance. The amount of film-forming agent added to the cosmetic base is preferably 1% by mass or more, more preferably 1.5% by mass or more, and even more preferably 2% by mass or more. Furthermore, it is preferably 8% by mass or less, more preferably 6% by mass or less, and even more preferably 5% by mass or less. 【0022】 In the aerosol cosmetic composition of the present invention, the mass ratio (A / C) of (A) color travel pigment to (C) film-forming agent is preferably 0.5 or more and 5.0 or less. When this mass ratio (A / C) is 0.5 or more, the color development is excellent. Furthermore, when this mass ratio (A / C) is 5.0 or less, the water resistance and abrasion resistance are excellent. The lower limit of this mass ratio (A / C) is more preferably 1.0 or more, the upper limit is more preferably 4.0 or less, and even more preferably 3.5 or less. 【0023】 Other ingredients In addition to components (A) to (C), the aerosol-type hair cosmetic composition of the present invention may optionally contain other components used in aerosol-type hair cosmetics. Other components may optionally include other pigments, organic solvents, oily components, surfactants, etc., and examples of these include those listed below. 【0024】 (Other pigments) Other pigments are pigments that do not produce a color travel effect, and examples include inorganic pigments, organic pigments, dye resin solid solutions, daylight fluorescent pigments, or natural pigments. One or more of these may be blended. When other pigments are incorporated, it is preferable that the median diameter of the other pigments is between 1 μm and 50 μm. Furthermore, the median diameters of the color travel pigment and the other pigments may be the same or different. When other pigments are incorporated, the proportion of the color travel pigment to the total pigments is preferably 50% by mass or more, and more preferably 60% by mass or more. 【0025】 Inorganic pigments, also known as mineral pigments, are chemically inorganic pigments. They are made from natural minerals, or by processing or crushing natural minerals, or from compounds of zinc, titanium, lead, iron, copper, chromium, etc. They have good lightfastness and heat resistance and are insoluble in organic solvents. There are various types, but when classified by color, they include white pigments (titanium dioxide, etc.), red pigments (red iron oxide, etc.), yellow pigments (lead yellow, etc.), green pigments (emerald green, etc.), blue pigments (cobalt blue, etc.), purple pigments (manganese violet, etc.), black pigments (carbon black, etc.), and transparent white pigments (silica white, etc.). Inorganic pigments are not particularly limited, but examples include zinc oxide, titanium oxide, red iron oxide, chromium oxide, cobalt oxide, black iron oxide, yellow iron oxide, chromium hydroxide, aluminum hydroxide, Prussian blue, barium sulfate, hydrated silicates, anhydrous silicic acid, aluminum silicate, talc, kaolin, carmine, mica, magnesium carbonate, bentonite, ultramarine blue, manganese violet, carbon black, aluminum, copper, gold, and titanium mica. 【0026】 Organic pigments are pigments primarily composed of dyes made from organic compounds. Organic pigments are broadly classified into two types: organic dye pigments, which are insoluble in water, and lake pigments, which are made insoluble by some means, such as adding metal salts to water-soluble dyes. Organic pigments have the advantages of a rich and vivid range of hues, as well as high coloring power and transparency. There are no particular limitations on organic pigments, but examples include reds 202, 203, 204, 205, 206, 207, 208, 219, 220, 221, 228, and 405; oranges 203, 204, and 401; yellows 205 and 401; and blue 404. 【0027】 Daylight fluorescent pigments are a type of fluorescent pigment that is organic in nature. They are characterized by their vivid colors under normal light conditions. Their brightness increases with light stimulation, such as ultraviolet light. Natural pigments are not particularly limited, but examples include mineral pigments such as clay, natural dye lakes such as madder lake and cochineal lake, azo pigments, and phthalocyanine pigments. ru. Other pigments are preferably dark in color from the viewpoint of exhibiting a color travel effect, and specifically, carbon black, black iron oxide, and titanium dioxide are preferred. 【0028】 Examples of organic solvents include ethanol, isopropanol, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, 1,3-butylene glycol, ethyl cellosolve, butyl cellosolve, and methyl acetate. 【0029】 (Oily components) Examples of oily components include hydrocarbons, waxes, oils and fats, higher alcohols, higher fatty acids, alkyl glyceryl ethers, esters, and silicones. These can be blended individually or in combination of two or more types. Examples of hydrocarbons include α-olefin oligomers, light isoparaffins, light liquid isoparaffins, liquid isoparaffins, paraffins, liquid paraffins, squalane, polybutene, polyethylene powder, microcrystalline wax, and petrolatum. Examples of waxes include beeswax, lanolin, carnauba wax, and candelilla wax. Examples of oils and fats include various vegetable oils and animal oils such as 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, cocoa butter, corn oil, peanut oil, rapeseed oil, rice bran oil, rice germ oil, wheat germ oil, Job's tears oil, grape seed oil, avocado oil, carrot oil, castor oil, linseed oil, coconut oil, mink oil, and egg yolk oil. 【0030】 Examples of higher alcohols include lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, cetostearyl alcohol, arachidyl alcohol, behenyl alcohol, hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, and lanolin alcohol. 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 lanolinic acid. Examples of alkyl glyceryl ethers include batyl alcohol (monostearyl glyceryl ether), chymyl alcohol (monocetyl glyceryl ether), cerakyl alcohol (monooleyl glyceryl ether), and isostearyl glyceryl ether. 【0031】 Esters include various glycerin-based vegetable oils such as soybean oil, olive oil, and hydrogenated castor oil, as well as polyhydric alcohol fatty acid esters such as pentaerythritol-based fatty acid esters, diisopropyl adipate, diisobutyl adipate, dioctyl adipate, 2-hexyldecyl adipate, diisostearyl adipate, isopropyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, stearyl stearate, hexyl laurate, myristyl myristate, decyl oleate, dimethyl o Examples include hexyldecyl ctanoate, isotridecyl myristate, isostearyl myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, fatty acids (C10-30) (cholesteryl / lanosteryl), lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, cetyl caprate, glyceryl tricaprylate, neopentyl glycol dicaprate, diisostearyl malate, and lanolin derivatives. 【0032】 Examples of silicones include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, polyether-modified silicones, highly polymerized silicones with an average degree of polymerization of 650 to 10000, betaine-modified silicones, alkyl-modified silicones, alkoxy-modified silicones, mercapto-modified silicones, carboxy-modified silicones, and fluorine-modified silicones. 【0033】 (Surfactants) Examples of surfactants include cationic surfactants, nonionic surfactants, anionic surfactants, and amphoteric surfactants. These can be formulated individually or in combination of two or more types. 【0034】 Cationic surfactants include lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride (steartrimonium chloride), distearyldimethylammonium chloride, behenyltrimethylammonium methylsulfate, tri(polyoxyethylene)stearylammonium chloride, quaternium-91 (INCI name), behenyltrimethylammonium chloride, distearyldimethylammonium chloride, lanolin fatty acid amidopropyl ethyldimethylammonium ethyl sulfate, cetyltrimethylammonium bromide, stearyltrimethylammonium bromide, stearyltrimethylammonium saccharin, cetyltrimethylammonium saccharin, and N,N-di(acyloxy),N-(hydroxyethyl),N-methylammonium methosulfate. 【0035】 Examples of nonionic surfactants include polyoxyethylene (hereinafter referred to as POE) alkyl ethers such as ceteth-7, ceteth-10, and ceteth-20, POE alkylphenyl ethers, POE-polyoxypropylene alkyl ethers, POE sorbitan fatty acid esters such as polysorbate, glycerin fatty acid esters such as glyceryl monostearate, POE propylene glycol fatty acid esters, and aliphatic alkanolamides. 【0036】 Examples of anionic surfactants include alkyl sulfates such as sodium lauryl sulfate, POE alkyl sulfates such as sodium laureth sulfate, alkyl sulfate esters such as triethanolamine lauryl sulfate, sodium stearoyl methyl taurate, triethanolamine dodecylbenzenesulfonate, sodium tetradecenesulfonate, POE lauryl ether phosphate and its salts, N-lauroyl glutamates such as sodium N-lauroyl-L-glutamate, and N-lauroyl methyl-β-alanine salts. 【0037】 Examples of amphoteric surfactants include 2-undecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine sodium, cocamidopropyl betaine, and lauryldimethylaminoacetic acid betaine. 【0038】 Furthermore, the aerosol-type hair cosmetic of the present invention may contain, as needed, moisturizers such as glycerin, diglycerin, polyglycerin, 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; bactericides; UV absorbers; animal extracts; plant extracts; and the like. 【0039】 The aerosol-type hair cosmetic of the present invention is sprayed onto the hair to temporarily color it. In order to spray the aerosol-type hair cosmetic of the present invention as small particles while preventing nozzle clogging, the ratio (D / d50) of the nozzle diameter (D (μm)) of the actuator attached to the aerosol container to the median diameter (d50 (μm)) of the color travel pigment is preferably 5 or more and 500 or less. The lower limit of this ratio (D / d50) is preferably 10 or more, and more preferably 14 or more. The upper limit of this ratio (D / d50) is preferably 100 or less, and more preferably 50 or less. In this specification, the nozzle diameter refers to the smallest diameter in the flow path through which the cosmetic passes, and is usually the diameter of the outlet or orifice. Furthermore, the nozzle diameter is preferably 200 μm or more and 600 μm or less. More preferably 250 μm or more, and even more preferably 300 μm or more. Furthermore, the nozzle diameter is more preferably 500 μm or less, and even more preferably 450 μm or less. 【0040】 The aerosol-type hair cosmetic of the present invention preferably has a gas pressure of 0.1 MPa to 3 MPa. A gas pressure within this range facilitates uniform spraying, resulting in excellent color travel and reduced stiffness. A gas pressure of 0.2 MPa or higher is more preferable, and 0.3 MPa or higher is even more preferable. Furthermore, a gas pressure of 2 MPa or lower is even more preferable, and 1 MPa or lower is even more preferable. The aerosol-type hair cosmetic of the present invention preferably has a spray volume of 1 g / 10 seconds or more and 10 g / 10 seconds or less. A spray volume within this range makes it easy to apply uniformly to the hair, shortens the drying time, resulting in excellent color transfer effect, reduced stiffness, and prevention of dripping. A spray volume of 2 g / 10 seconds or more is more preferable, and 2.5 g / 10 seconds or more is even more preferable. Furthermore, a spray volume of 8 g / 10 seconds or less is even more preferable, and 6 g / 10 seconds or less is even more preferable. [Examples] 【0041】 The aerosol-type hair cosmetic composition of the present invention will be described in detail below with reference to examples, but the present invention is not limited in any way to these examples. • Median diameter measurement The pigment was added to ethanol to a concentration of 10% by mass, and dispersed by irradiating with ultrasound for 60 seconds to obtain a 10% by mass ethanol dispersion. The 10% by mass ethanol dispersion was used as a sample and measured twice using a laser diffraction scattering particle size distribution analyzer (Microtrac MT3000 EXII, Microtrac-Bell) under the following conditions: transmittance: transmitted, particle shape: non-spherical, particle refractive index: 1.81, and measurement time: 30 seconds. The average value was defined as the median diameter. A cosmetic base was prepared by blending each material in the mass ratios shown in Tables 1 and 2 below. This cosmetic base and (B) propellant were then filled into aerosol containers in the different blending ratios shown in each table to produce aerosol-type hair cosmetic. These were evaluated according to the following evaluation criteria for color travel effect, feel, water resistance, abrasion resistance, and washability. The results are shown in the respective tables. 【0042】 Evaluation method • The effect of color travel For each 1g hair bundle (Beaulux Co., Ltd., product number: BS-B3N, 100% black hair), an aerosol-type hair cosmetic was applied using an actuator with a nozzle diameter of 350μm (Mitani Valve Co., Ltd., button: D94 type, nozzle: ND-13 type) so that 0.1g of dry weight was attached. After allowing it to dry completely, five expert panelists conducted a visual sensory test according to the evaluation criteria below. The aerosol-type hair cosmetic of Example 2 was also evaluated similarly on a bundle of white hair (Beaulux Co., Ltd., product number: BM-WA, 100% white hair). Evaluation Criteria 5: Compared to Example 1, the color travel effect (color change) is considerably more noticeable. 4. Compared to Example 1, a color travel effect (change in color tone) can be observed. 3: A color travel effect (color change) equivalent to that of Example 1 can be observed. 2: Compared to Example 1, the color travel effect (color change) is less noticeable. 1: Compared to Example 1, the color travel effect (color change) is hardly noticeable. The results are shown as integers, rounded to the nearest whole number, based on the average score of the five expert panelists. 【0043】 ·water resistance For each 1g hair bundle (Beaulux Co., Ltd., product number: BS-BA, 100% black hair), an aerosol-type hair cosmetic was applied using an actuator with a nozzle diameter of 350μm (Mitani Valve Co., Ltd., button: D94 type, spray nozzle: ND-13 type) so that 0.1g of dry mass was attached. After allowing it to dry completely, the hair bundle was moistened by spraying it with room temperature water using a spray bottle. The wet hair bundle was then sandwiched between black cloths, and a 5kg load was applied for 15 minutes. The color transfer to the cloth was then observed visually by five expert panelists and evaluated according to the following evaluation criteria. Evaluation Criteria 5: There is absolutely no color transfer. 4: There is a very slight color transfer. 3: There is some color transfer. 2: There is a lot of color transfer. 1: There is severe color transfer. The results are shown as integers, rounded to the nearest whole number, based on the average score of the five expert panelists. 【0044】 ·Abrasion resistance For each 1g strand of hair (Beaulux Co., Ltd., product number: BS-BA, 100% black hair), an aerosol-type hair cosmetic was applied using an actuator with a nozzle diameter of 350μm (Mitani Valve Co., Ltd., button: D94 type, spray nozzle: ND-13 type) so that 0.1g of dry mass was attached. After allowing it to dry completely, the color transfer when the hair strand was rubbed with a black cloth was observed visually by five expert panelists and evaluated according to the following evaluation criteria. Evaluation Criteria 5: There is absolutely no color transfer. 4: There is a very slight color transfer. 3: There is some color transfer. 2: There is a lot of color transfer. 1: There is severe color transfer. The results are shown as integers, rounded to the nearest whole number, based on the average score of the five expert panelists. 【0045】 • Washable For each 1g strand of hair (Beaulux Co., Ltd., product number: BS-BA, 100% black hair), an aerosol-type hair cosmetic was applied using an actuator with a nozzle diameter of 350μm (Mitani Valve Co., Ltd., button: D94 type, spray nozzle: ND-13 type) so that 0.1g of dry weight was attached. After allowing it to dry completely, the hair strands were washed twice with shampoo (Hoyu Co., Ltd., Bigen Treatment Shampoo). The remaining color on the hair strands was then visually observed by five expert panelists and evaluated according to the following evaluation criteria. Evaluation Criteria 5: There is absolutely no color remaining. 4: There is a very slight trace of color remaining. 3: Some color remains. 2: There is quite a bit of color remaining. 1: There is strong color retention. The results are shown as integers, rounded to the nearest whole number, based on the average score of the five expert panelists. 【0046】 • Touch For each 1g hair bundle (Beaulux Co., Ltd., product number: BS-B3N, 100% black hair), an aerosol-type hair cosmetic was applied using an actuator with a nozzle diameter of 350μm (Mitani Valve Co., Ltd., button: D94 type, spray nozzle: ND-13 type) so that 0.1g of dry mass was attached. After allowing it to dry completely, a sensory test was conducted by 10 expert panelists using their hands, according to the evaluation criteria below, to assess the lack of stiffness. Evaluation Criteria 5: I don't feel any stiffness in my hair. 4: The hair is almost completely free of stiffness. 3: Less hair stiffness. 2: The hair feels slightly coarse. 1: The hair is very coarse. The results are shown as integer values, rounded to the nearest whole number, based on the average scores of the 10 expert panelists. 【0047】 [Table 1] 【0048】 [Table 2] 【0049】 The aerosol-type hair cosmetic compositions of Examples 1 to 19, which are part of the present invention, all received evaluation results of 3 or higher, confirming that they are suitable for use as temporary hair colorants. From the results of Examples 1-3 and Comparative Example 1, it was confirmed that the higher the concentration of propellant (B), the smaller the sprayed particles become, the cleaner they adhere to the hair, resulting in a vivid color transfer effect and improved texture. In particular, the aerosol-type hair cosmetic products of Examples 2 and 3, which had a concentration of propellant (B) of 70% by mass and 80% by mass, respectively, showed a very vivid color transfer effect. In contrast, the aerosol-type hair cosmetic product of Comparative Example 1 had large sprayed particles, and these particles merged on the hair to form even larger particles, resulting in clumpy solids at the ends of the hair, making it look dirty. Furthermore, the color was whitish, there was almost no color transfer effect, and the hair felt hard. 【0050】 The results from Example 2, Comparative Example 2, and Examples 10, 16, and 18-19 confirmed that when the median diameter of the color travel pigment is within the range of the present invention, vivid color changes are expressed and an excellent color travel effect can be achieved. The results from Examples 9, 10-12 confirmed that, from the viewpoint of water resistance and abrasion resistance, anionic polymers or amphoteric polymers are preferred as the (C) film-forming agent, and amphoteric polymers are more preferred. 【0051】 For the aerosol-type hair cosmetic products of Example 2 and Comparative Example 2, new aerosol-type hair cosmetic products were manufactured in the same manner as described above. This was sprayed for 30 seconds, and the spray pattern, as well as the nozzle and its interior after spraying, were visually inspected to evaluate whether or not clogging occurred. In Example 2, where the ratio of the actuator nozzle diameter (D) to the median diameter (d50) of the color travel pigment (D / d50) was 14.6 (=350 / 24), stable spraying was possible for 30 seconds, and no pigment adhesion was observed in or inside the nozzle after spraying, indicating no clogging occurred. In contrast, in Comparative Example 2, where the ratio of the actuator nozzle diameter (D) to the median diameter (d50) of the color travel pigment (D / d50) was 4.7 (=350 / 75), spraying was successful in the first half, but in the second half, the amount of liquid sprayed decreased and the proportion of the gaseous propellant (B) increased. Furthermore, although no pigment was observed adhering to the nozzle after spraying, pigment was observed adhering to the inside of the nozzle, indicating clogging. It is presumed that the clogging of the flow path by pigment made it difficult for the liquid to pass through, leading to an increase in the amount of gas sprayed.

Claims

[Claim 1] It contains the following (A) to (C), The proportion of (B) propellant in relation to the total contents filled in the aerosol container is 65% by mass or more and 90% by mass or less. The blending ratio of (A) color travel pigment to the cosmetic concentrate is 5% by mass or more and 15% by mass or less. The proportion of (C) film-forming agent in the undiluted cosmetic solution is 2% by mass or more and 10% by mass or less. An aerosol-type hair cosmetic characterized in that the mass ratio (A / C) of (A) color travel pigment to (C) film-forming agent is 0.5 or greater. (A) Color travel pigments with a median diameter of 1 μm or more and 50 μm or less (B) Propellant (C) Film-forming agent [Claim 2] The aerosol-type hair cosmetic according to Claim 1, characterized in that the mass ratio (A / C) of (A) color travel pigment to (C) film-forming agent is 0.5 or more and 5.0 or less. [Claim 3] (A) The aerosol-type hair cosmetic composition according to claim 1 or 2, characterized in that the median diameter of the color travel pigment is 10 μm or more and 35 μm or less. [Claim 4] The aerosol-type hair cosmetic according to any one of claims 1 to 3, characterized in that the nozzle diameter (D (μm)) of the actuator attached to the aerosol-type container is 250 μm or more and 450 μm or less. [Claim 5] (C) The aerosol-type hair cosmetic according to any one of 1 to 4, characterized in that the film-forming agent includes either an amphoteric polymer, an anionic polymer, or both. [Claim 6] The aerosol-type hair cosmetic according to any one of claims 1 to 5, characterized in that the proportion of (B) propellant to the total amount of filling material packed into the aerosol-type container is 65% by mass or more and 85% by mass or less. [Claim 7] The aerosol-type hair cosmetic composition according to any one of claims 1 to 6, characterized in that the ratio (D / d50) of the nozzle diameter (D (μm)) of the actuator attached to the aerosol-type container to the median diameter (d50 (μm)) of the color travel pigment (A) is 5 or more and 500 or less.