Aerosol-type hair cosmetic

Abstract

To provide aerosol hair cosmetics that can significantly reduce frizz and waviness in hair effectively and quickly, without imposing an excessive burden on a user.SOLUTION: Aerosol hair cosmetics contain a stock solution (X) and a propellant (Y) containing carbon dioxide. The stock solution (X) contains the following components (a) to (c): (a) 1 mass% or more of an aromatic sulfonic acid or a salt thereof; (b) a polyol with a molecular weight of 70 or more and 150 or less; and (c) a nonionic surfactant with a C8-14 alkyl group or fatty acid residue. The aerosol hair cosmetics have a pH of 2.5 or more to 5 or less in a 5% water solution.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to aerosol hair cosmetics.

Background Art

[0002] Stimuli such as ultraviolet rays and the heat of a dryer to hair not only damage the hair but also cause hair kinks and waves. In addition, as the scalp ages and hair follicles change due to aging, distortion, shrinkage, or a decrease in moisture retention may occur in the hair, which can also cause hair kinks and waves. As hair cosmetics, it is strongly desired to alleviate such hair kinks and waves and achieve straight, glossy, and cohesive young-looking hair, and various developments have been made conventionally.

[0003] For example, Patent Document 1 discloses a composition containing an aromatic sulfonic acid compound such as sulfanilic acid having an amino group or the like or a salt thereof, and attempts to perform hair straightening or straightening on keratin fibers such as hair and impart handleability and smoothness to the keratin fibers. Further, Patent Document 2 discloses an aerosol hair cosmetic containing a hair cosmetic raw material containing a surfactant and various organic acids or salts thereof such as aromatic sulfonic acid or a salt thereof, and an aerosol containing carbon dioxide, and aims to efficiently penetrate the organic acid as an active ingredient for hair modification into the hair.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In hair cosmetics used on a daily basis, it is desirable that the effects on reducing frizz and waviness in the hair be quickly noticeable without placing an excessive burden on the user. However, even with the technologies described in any of the above patent documents, it still takes a certain amount of time to obtain sufficient effects, and in practice, it is necessary to leave the product on the hair for more than 10 minutes after application, so there is still room for improvement.

[0006] Therefore, the present invention relates to an aerosol-type hair cosmetic that can effectively and quickly alleviate frizz and waviness in hair without imposing an excessive burden on the user. [Means for solving the problem]

[0007] Therefore, after various studies, the inventors discovered an aerosol-type hair cosmetic that can effectively and quickly alleviate frizz and waviness in hair by combining a specific amount of aromatic sulfonic acid or its salt with a specific polyol and a nonionic surfactant, and by including a stock solution with a pH within a specific range, and a propellant containing carbon dioxide.

[0008] Therefore, the present invention relates to an aerosol-type hair cosmetic comprising a stock solution (X) and a propellant (Y) containing carbon dioxide, The undiluted solution (X) contains the following components (a) to (c): (a) Aromatic sulfonic acid or its salt: 1% by mass or more (b) Polyols with a molecular weight of 70 to 150 (c) Nonionic surfactant having an alkyl group or fatty acid residue with 8 to 14 carbon atoms The present invention provides an aerosol-type hair cosmetic containing and having a pH of 2.5 or higher and 5 or lower in a 5% aqueous solution. [Effects of the Invention]

[0009] The aerosol-type hair cosmetic of the present invention offers excellent ease of application to the hair, effectively and quickly reducing frizz and waviness. Therefore, it reduces the time required for each application, effectively reducing the burden on the user during daily use, while easily and quickly achieving straight, shiny, and manageable youthful hair. [Modes for carrying out the invention]

[0010] The present invention will be described in detail below. In this invention, "ease of spreading on hair" means that when the aerosol-type hair cosmetic of the present invention is applied to the hair, it can be spread evenly and smoothly onto each strand of hair without causing unnecessary stress such as fingers or other objects getting caught in the hair or the hair strands becoming tangled.

[0011] The stock solution (X) contained in the aerosol-type hair cosmetic of the present invention contains 1% by mass or more of an aromatic sulfonic acid or a salt thereof as component (a). This component (a) promotes good spreadability on the hair when applied, and enables the effective and rapid exertion of a curl-reducing effect on the hair.

[0012] Component (a) specifically includes, for example, one or more selected from benzenesulfonic acid or its salts, naphthalenesulfonic acid or its salts, azulenesulfonic acid or its salts, and benzophenonesulfonic acid or its salts. Examples of salts of such component (a) include sodium salts, potassium salts, lithium salts, aluminum salts, and ammonium salts (NH₃). 4+ Examples include organic ammonium salts, etc.

[0013] More specifically, examples of benzenesulfonic acid or its salts include one or more selected from benzenesulfonic acid, o-toluenesulfonic acid, p-toluenesulfonic acid, xylenesulfonic acid, cumenesulfonic acid, ethylbenzenesulfonic acid, 2,4,6-trimethylbenzenesulfonic acid, and salts thereof.

[0014] More specifically, examples of naphthalene sulfonic acid or its salts include 1- or 2-naphthalene sulfonic acid (α- or β-naphthalene sulfonic acid), 2,7-naphthalenedisulfonic acid, 1,5-naphthalenedisulfonic acid, 2,6-naphthalenedisulfonic acid, 1-naphthol-2-sulfonic acid, 1-naphthol-4-sulfonic acid, 2-naphthol-6-sulfonic acid, 2-naphthol-7-sulfonic acid, 2,3-dihydroxynaphthalene-6-sulfonic acid, 1,7-dihydroxynaphthalene-3-sulfonic acid, J acid (2-amino-5-naphthol-7-sulfonic acid), 1-amino-2-naphthol-4-sulfonic acid, 1-naphthol Examples include thylamine-4-sulfonic acid, broenazic acid (2-naphthylamine-6-sulfonic acid), cravesic acid (1-naphthylamine-7-sulfonic acid), 2-naphthylamine-1-sulfonic acid, 1-naphthylamine-6-sulfonic acid, 1-naphthylamine-8-sulfonic acid, 2,7-diamino-1-naphthol-3-sulfonic acid, 7,8-diamino-1-naphthol-3-sulfonic acid, 6-methyl-2-naphthalenesulfonic acid, 4-ethyl-1-naphthalenesulfonic acid, 5-isopropyl-1-naphthalenesulfonic acid, 5-butyl-2-naphthalenesulfonic acid, and one or more selected from salts thereof.

[0015] More specifically, examples of azulene sulfonic acid or its salts include guaiazulene sulfonic acid, 1-azulene sulfonic acid, 3-acetyl-7-isopropyl-1-azulene sulfonic acid, 3-(2-hydroxyethyl)-7-isopropyl-1-azulene sulfonic acid, 3-methyl-7-isopropyl-1-azulene sulfonic acid, 7-isopropyl-1-azulene sulfonic acid, 1,4-dimethyl-7-isopropyl-2-azulene sulfonic acid, 1,3-azulenedisulfonic acid, 3-formyl-4,6,8-trimethyl-1-azulene sulfonic acid, and one or more selected from these salts.

[0016] More specifically, examples of benzophenonesulfonic acid or its salts include one or more selected from o-chlorobenzophenonesulfonic acid, p-chlorobenzophenonesulfonic acid, 2-hydroxybenzophenonesulfonic acid, 4-hydroxybenzophenonesulfonic acid, 2-aminobenzophenonesulfonic acid, 4-aminobenzophenonesulfonic acid, 2-methylbenzophenonesulfonic acid, 4-methoxybenzophenonesulfonic acid, 4,4'-dimethylbenzophenonesulfonic acid, and their salts.

[0017] Among these components (a), from the viewpoint of ensuring good spreadability to the hair during application while effectively and quickly exhibiting an effect of reducing frizz and waviness in the hair, one or more selected from benzenesulfonic acid, naphthalenesulfonic acid, and their salts are preferred, and one or more selected from o-toluenesulfonic acid, p-toluenesulfonic acid, 2-naphthalenesulfonic acid, and their salts are more preferred.

[0018] From the perspective of effectively and rapidly exerting the effect of relaxing hair curls and waves, the content of component (a) in the stock solution (X) is preferably 1% by mass or more, more preferably 1.5% by mass or more, still more preferably 2% by mass or more, preferably 10% by mass or less, more preferably 8% by mass or less, and still more preferably 5% by mass or less. And the content of component (a1) in the stock solution (X) is preferably 1 to 10% by mass, more preferably 1.5 to 8% by mass, and still more preferably 2 to 5% by mass.

[0019] The stock solution (X) contained in the aerosol-type hair cosmetic of the present invention contains a polyol having a molecular weight of 70 or more and 150 or less as component (b). By containing such component (b), in combination with component (c) described later, when applying the aerosol-type hair cosmetic, it effectively enhances the ease of spreading on the hair and enables the effective and rapid exertion of the effect of relaxing hair curls and waves.

[0020] Specific examples of such component (b) include, for example, one or more selected from glycerin (molecular weight 92), diethylene glycol (molecular weight 106), propylene glycol (molecular weight 76), dipropylene glycol (molecular weight 134), pentylene glycol (molecular weight 104), 1,3-propanediol (molecular weight 76), and butylene glycol (molecular weight 90). Among them, from the perspective of effectively enhancing the ease of spreading on the hair, one or more selected from glycerin, propylene glycol, dipropylene glycol, and butylene glycol are preferred, one or more selected from glycerin, propylene glycol, and dipropylene glycol are more preferred, and one or two selected from glycerin and propylene glycol are still more preferred.

[0021] From the viewpoint of effectively enhancing the ease of spreading on hair and effectively and rapidly exerting the effect of relaxing kinks and waves in hair, the content of component (b) in the stock solution (X) is preferably 2% by mass or more, more preferably 3% by mass or more, still more preferably 5% by mass or more, preferably 30% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less. And the content of component (b) is preferably 2 to 30% by mass, more preferably 3 to 20% by mass, and still more preferably 5 to 15% by mass in the stock solution (X).

[0022] From the viewpoint of effectively enhancing the ease of spreading on hair and enabling the effective and rapid exertion of the effect of relaxing kinks and waves in hair, the mass ratio ((b) / (a)) of the content of component (b) to the content of component (a) in the stock solution (X) is preferably 0.5 or more, more preferably 1.5 or more, still more preferably 3 or more, preferably 12 or less, more preferably 8 or less, and still more preferably 5 or less. And the mass ratio ((b) / (a)) of the content of component (b) to the content of component (a) in the stock solution (X) is preferably 0.5 to 12, more preferably 1.5 to 8, and still more preferably 3 to 5.

[0023] The stock solution (X) contained in the aerosol-type hair cosmetic of the present invention contains, as component (c), a nonionic surfactant in which the alkyl group or fatty acid residue has 8 to 14 carbon atoms. By containing such component (c), in combination with the above-mentioned component (b), the ease of spreading on hair at the time of application can be effectively enhanced.

[0024] Specifically, such component (c) includes one or more selected from polyoxyethylene alkyl ethers having 8 to 14 carbon atoms in the alkyl group, fatty acid polyoxyethylene sorbitan esters having 8 to 14 carbon atoms in the fatty acid residue, fatty acid polyglyceryls having 8 to 14 carbon atoms in the fatty acid residue, polyethylene glycol fatty acid esters having 8 to 14 carbon atoms in the fatty acid residue, and alkyl glycosides having 8 to 14 carbon atoms in the alkyl group. Furthermore, the number of moles of ethylene oxide added to polyoxyethylene alkyl ether, fatty acid polyoxyethylene sorbitan ester, and polyethylene glycol fatty acid ester is preferably 3 to 30, and the number of moles of glycerin added to fatty acid polyglyceryl is preferably 3 to 30. Furthermore, the alkyl group in the polyoxyethylene alkyl ether and alkyl glycoside may be a linear alkyl group or a branched alkyl group.

[0025] More specifically, the polyoxyethylene alkyl ethers mentioned above include one or more selected from polyoxyethylene lauryl ether, polyoxyethylene myristyl ether, mixtures thereof, and polyoxyethylene alkyl (C12-C14) ethers having a linear or branched alkyl group having 12-14 carbon atoms. Examples of the above-mentioned fatty acid polyoxyethylene sorbitan ester include polyoxyethylene sorbitan monolaurate. Examples of the above-mentioned fatty acid polyglycerides include one or more selected from polyglyceryl monocaprylate, polyglyceryl monocaprate, and polyglyceryl monolaurate. Polyethylene glycol monolaurate is an example of the polyethylene glycol fatty acid ester mentioned above. Examples of the alkyl glycosides mentioned above include one or more selected from decyl glucoside, lauryl glucoside, and myristyl glucoside.

[0026] Among these components (c), nonionic surfactants having 10 to 14 carbon atoms in the alkyl group or fatty acid residue are preferred, and nonionic surfactants having 12 to 14 carbon atoms in the alkyl group or fatty acid residue are more preferred, from the viewpoint of effectively improving ease of spreading on hair. Specifically, one or more selected from polyoxyethylene lauryl ether, polyoxyethylene myristyl ether, polyoxyethylene alkyl (C12-C14) ether, polyoxyethylene sorbitan monolaurate, and decyl glucoside are preferred, one or more selected from polyoxyethylene alkyl (C12-C14) ether and polyoxyethylene (20) sorbitan monolaurate are more preferred, polyoxyethylene alkyl (C12-C14) ether is even more preferred, and polyoxyethylene alkyl (sec-C12-C14) ether is even more preferred.

[0027] The content of component (c) is preferably 0.5% by mass or more, more preferably 0.8% by mass or more, even more preferably 1% by mass or more, preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 4% by mass or less, in the undiluted solution (X), from the viewpoint of effectively increasing the ease of spreading on the hair and effectively and quickly exhibiting the effect of reducing frizz and waves in the hair.

[0028] The mass ratio ((c) / (a)) of the content of component (c) to the content of component (a) in the stock solution (X) is preferably 0.1 or more, more preferably 0.3 or more, even more preferably 0.5 or more, preferably 2.5 or less, more preferably 2 or less, and even more preferably 1.5 or less, from the viewpoint of effectively increasing the ease of spreading on the hair and enabling the effective and rapid exertion of the effect of reducing frizz and waves in the hair. Furthermore, the mass ratio ((c) / (a)) of the content of component (c) to the content of component (a) in the stock solution (X) is preferably 0.1 to 2.5, more preferably 0.3 to 2, and even more preferably 0.5 to 1.5.

[0029] The stock solution (X) preferably further contains water. This allows for good dispersion or dissolution of each component of the stock solution (X), improving the ease with which the aerosol-type hair cosmetic of the present invention can be spread on the hair, while also promoting good penetration into the hair. Examples of water include deionized water and distilled water. The water content in the stock solution (X) is preferably 10% by mass or more, more preferably 30% by mass or more, even more preferably 50% by mass or more, and preferably 95% by mass or less. Furthermore, the water content in the stock solution (X) is preferably 10 to 95% by mass, more preferably 30 to 95% by mass, and even more preferably 50 to 95% by mass.

[0030] The stock solution (X) may contain, to the extent that it does not inhibit the effects of the present invention, anionic surfactants other than the above-mentioned components, such as alkylbenzene sulfonates, alkyl ether sulfates, alkenyl ether sulfates, alkyl sulfates, alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl ether carboxylates, alkenyl ether carboxylates, α-sulfo fatty acid salts, N-acyl amino acid salts, phosphate mono or diesters, sulfosuccinates, etc.; Cationic surfactants such as monoalkyltrimethylammonium chloride, dialkyldimethylammonium chloride, monoalkyltrimethylammonium bromide, stearoxypropyldimethylamine, and stearoxypropyltrimonium chloride; It may contain amphoteric surfactants such as imidazoline, carbobetine, amidebetaine, sulfobetaine, hydroxysulfobetaine, and amidesulfobetaine. Furthermore, in the stock solution (X), the content of the anionic surfactant is preferably 0.01 to 50% by mass, the content of the cationic surfactant is preferably 0.01 to 10% by mass, and the content of the amphoteric surfactant is preferably 0.01 to 30% by mass.

[0031] Furthermore, to the extent that it does not impair the effects of the present invention, in addition to the above-mentioned components, the present invention may also contain antioxidants, oils, anti-dandruff agents, vitamins, bactericides, anti-inflammatory agents, preservatives, chelating agents, moisturizers, pearlescent agents, ceramides, fragrances, UV absorbers, pH adjusters, and the like, as these are commonly used ingredients in hair cosmetics.

[0032] The aerosol-type hair cosmetic of the present invention contains a propellant (Y) containing carbon dioxide together with the above-mentioned stock solution (X). That is, the aerosol-type hair cosmetic of the present invention is a cosmetic that takes the form of an aerosol spray or aerosol foam, with the above-mentioned stock solution (X) and propellant (Y) sealed in an aerosol container. As a result, the hair cosmetic can be easily dispensed from the container simply by spraying when applied, and its spreadability on the hair is effectively enhanced, allowing the hair cosmetic to easily reach from the roots to the tips of the hair, and enabling the hair to effectively and quickly exhibit an effect of reducing frizz and waves.

[0033] Examples of aerosol containers that can be used include known pressure-resistant containers made of metal or plastic, or double-walled containers in which an inner bag is housed inside a pressure-resistant container. In the case of a double-walled container, the stock solution (X) is filled into the inner bag, and the propellant (Y) is filled between the pressure-resistant container and the inner bag. Furthermore, the method of preparing the aerosol formulation is not particularly limited. For example, it can be prepared by filling the pressure-resistant container that constitutes the aerosol container with the stock solution (X), attaching a valve, and then filling the propellant (Y) through the valve.

[0034] The propellant (Y) contains carbon dioxide and may also contain other liquefied gases such as nitrogen, propane, n-butane, isobutane and mixtures thereof, liquefied petroleum gas (LPG), dimethyl ether, isopentane, etc. The carbon dioxide content in the propellant (Y) is preferably 50% by mass or more, more preferably 70% by mass or more, even more preferably 80% by mass or more, even more preferably 90% by mass or more, and even more preferably 100% by mass, from the viewpoint of exhibiting good ejection properties and enhancing the effect of reducing frizz and waves in hair. In other words, it is preferable that the propellant (Y) contains only carbon dioxide.

[0035] The internal pressure of the aerosol container at 25°C after filling with propellant (Y) is preferably 0.1 to 1.3 MPa, and more preferably 0.3 to 1.0 MPa, from the viewpoint of obtaining an appropriate spray velocity.

[0036] In the aerosol-type hair cosmetic composition of the present invention, in order to maintain good dispensing properties, effectively enhance ease of spreading on the hair during application, and effectively and quickly alleviate frizz and waves in the hair, the mass ratio ((X):(Y)) of the stock solution (X) to the propellant (Y) is preferably 95:5 to 99:1, and more preferably 97:3 to 98.5:1.5.

[0037] The aerosol-type hair cosmetic of the present invention can be used as a hair cleanser, rinse, conditioner, or treatment, and can be used as both a rinse-off and leave-in type. In particular, it is preferable to use it as a rinse-off type from the viewpoint of imparting a light finish and smooth feel to the hair, and it is more preferable to use it as a rinse, conditioner, or treatment from the viewpoint of experiencing the effect of effectively and quickly alleviating frizz and waves in the hair.

[0038] From the viewpoint of fully enjoying the effects of the present invention, the method of using the aerosol-type hair cosmetic of the present invention is to apply it to the hair, leave it for 1 second to 10 minutes, or preferably 1 to 5 minutes, and then rinse. When applying the aerosol-type hair cosmetic of the present invention to the hair, pre-treatment, post-treatment, or drying treatment may be performed on the hair as appropriate. Specifically, for example, when using the aerosol-type hair cosmetic of the present invention as a hair cleansing agent, the product is applied to the hair, the hair and scalp are cleansed together, and then rinsed. Also, when using the aerosol-type hair cosmetic of the present invention as a rinse, conditioning agent, or treatment agent, the product is applied to the hair, left for 1 to 5 minutes to allow the hair cosmetic to penetrate the hair, and then rinsed. [Examples]

[0039] The present invention will be described in detail below based on examples. Unless otherwise specified in the table, the content of each component is expressed in mass percent.

[0040] [Examples 1-8, Comparative Examples 1-9] Each component was formulated according to the formulation shown in Table 1, and then mixed until homogeneous to prepare stock solution (X). Next, the obtained stock solution (X) was filled into an aerosol container (manufactured by Toyo Seikan Co., Ltd., container type: BL35A115-H, inner coating: epoxyphenol type, outer surface: plain silver (or plain white)), and then the propellant (Y) was sealed in at the ratio shown in Table 1. The internal pressure inside the container at 25°C was set to 0.7 MPa to produce each cosmetic product. For Comparative Example 8, stock solution (X) was used directly as a cosmetic product without being filled into an aerosol container. The obtained cosmetic product was used to perform the following measurements and evaluations. The results are shown in Table 1.

[0041] pH measurement The prepared stock solution (X) was prepared by adding water to create a 5% by mass aqueous solution, which was then thoroughly stirred and measured at 25°C using a pH meter (HM-42X, manufactured by Toa DKK Co., Ltd.).

[0042] 《Temperament Reduction Rate》 The following steps 1) to 5) were performed to determine the curl reduction rate as an indicator for evaluating the effect of reducing frizz and waviness in hair. 1) Curled Caucasian hair (manufactured by Kerling International Haarfabrik, European-natural hair remis curly, 30-35 cm) was placed on a flat board and cut at the point of inflection when viewed from above (hereinafter referred to as C-curl hair). This was then immersed in deionized water for 20 minutes and left to stand at 20°C and 50% RH for more than 24 hours. 2) A C-curl hair was placed on 1 mm graph paper and photographed from above. Using the resulting image, the diameter D0 of the circle inscribed in the arc of the C-curl hair was measured.

[0043] 3) Next, each cosmetic obtained in the examples and comparative examples was sprayed from the container, and the C-curl hair was immersed in it for 5 minutes at 40°C, then immersed in deionized water for 1 minute, and this operation was repeated 5 times. Then, the resulting C-curl hair was immersed in deionized water at 25°C for 20 minutes, and then left to stand at 20°C and 50% RH for 24 hours or more. 4) For the C-curl hair after standing, the diameter D of the circle inscribed in the arc was measured when the C-curl hair was considered as an arc, and the value of diameter D / diameter D0 was calculated. 5) The operations described in 1) to 4) above were performed on five C-curl hairs that were cut separately, and the average value was calculated as the curl reduction rate. Furthermore, if the obtained curl reduction rate is 1.10 or higher, it means that the product has an excellent effect in reducing curl in hair.

[0044] Coming Force The following steps 1) to 3) were performed to measure the coaming force. 1) Preparation of plain shampoo Each of the following ingredients was placed in a beaker, heated to 80°C, mixed, and after confirming that it was uniformly dissolved, it was cooled to obtain plain shampoo. (Composition of plain shampoo) (component) (mass%) Sodium polyoxyethylene lauryl ether sulfate 15.5 (Assuming Emal 227-pH11 (manufactured by Kao Corporation, effective content 27% by mass), this is 57.4%) Lauramido diethanolamide 2.28 (Aminone L-02 (manufactured by Kao Corporation)) Sodium chloride 0.80 (Roasted Salt S (Nippon Shokuhin Seizo Co., Ltd.)) Sodium benzoate 0.18 (Sodium benzoate solution (35%) (manufactured by Fushimi Pharmaceutical Co., Ltd., active ingredient 35% by mass)) Disodium edetate 0.15 (Clewatt N (manufactured by Nagase & Co., Ltd.)) Phosphate 0.07 (Phosphate, reagent grade (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., effective content 85% by mass)) Purified water balance Total 100.0

[0045] 2) Next, Japanese hair was bleached four times to create evaluation hair bundles. 30g of these evaluation hair bundles were washed with the plain shampoo prepared in 1) above, and then excess water was removed. 3) Each cosmetic obtained in the examples and comparative examples was sprayed from its container (the cosmetic in Comparative Example 8 was sprayed directly as is), and 1 g of it was spread onto a hair bundle for evaluation. This hair bundle was then placed in a combing force measuring device (KOT-0303, manufactured by Utsunomiya Seiki Co., Ltd.). Next, the hair bundle was held between two brushes from both sides, and the brushes were moved down from the root to the tip of the hair bundle. The maximum load (gf) applied to the brush as it passed from the root to the tip was measured three times, and the average value was taken as the combing force (gf) value. Based on the obtained values, a 5-point rating was performed according to the following criteria. Furthermore, a rating of "C" or higher on a 5-point scale indicates that the cosmetic product spreads easily onto the hair without causing unnecessary discomfort.

[0046] A: Less than 950gf B: 950gf or more and less than 1050gf C: 1050gf or more and less than 1150gf D: 1150gf or more and less than 1250gf E:1250gf or more

[0047] [Table 1]

[0048] *1: PTS70% solution (manufactured by Konan Kako Co., Ltd.) *2: Sodium β-naphthalene sulfonate (B-NAPH.SASS) (manufactured by Sugai Chemical Co., Ltd.) *3: Cosmetic-grade concentrated glycerin (manufactured by Kao Corporation) *4: DPG-RF (manufactured by ADEKA) *5: ADEKA Car Pole DL-30 (made by ADEKA Corporation) *6: Sorbitol #650 (manufactured by Mitsubishi Corporation Life Sciences Co., Ltd.) *7: 95% synthetic alcohol (manufactured by Nippon Synthetic Alcohol Co., Ltd.) *8: Softanol 90 (manufactured by Nippon Shokubai Co., Ltd.) *9: Leodor Super TW-L120 (manufactured by Kao Corporation) *10: My Doll 10 (manufactured by Kao Corporation) *11: Leodor TW-P120 (manufactured by Kao Corporation) *12: Leodor TW-O120V (manufactured by Kao Corporation) *13: Emanon CH-60 (manufactured by Kao Corporation) *14: Citric acid (50%) (manufactured by Showa Chemical Co., Ltd.) *15: Liquid potassium hydroxide (48%) (manufactured by AGC Inc.) *16: Food additive carbon dioxide (manufactured by Taiyo Nippon Sanso Corporation)

Claims

1. An aerosol-type hair cosmetic comprising a stock solution (X) and a propellant (Y) containing carbon dioxide, The undiluted solution (X) contains the following components (a) to (c): (a) Aromatic sulfonic acid or its salt: 1% by mass or more (b) Polyols with a molecular weight of 70 to 150 (c) Nonionic surfactant having an alkyl group or fatty acid residue with 8 to 14 carbon atoms An aerosol-type hair cosmetic containing and having a pH of 2.5 or higher and 5 or lower for a 5% by mass aqueous solution of the stock solution (X).

2. The aerosol-type hair cosmetic composition according to claim 1, wherein the mass ratio ((b) / (a)) of the amount of component (b) to the amount of component (a) in the undiluted solution (X) is 0.5 or more and 12 or less.

3. The aerosol-type hair cosmetic according to claim 1 or 2, wherein the mass ratio ((c) / (a)) of the amount of component (c) to the amount of component (a) in the undiluted solution (X) is 0.1 or more and 2.5 or less. Fee.

4. The aerosol-type hair cosmetic composition according to claim 1 or 2, wherein component (b) is one or more selected from glycerin, diethylene glycol, propylene glycol, dipropylene glycol, pentylene glycol, 1,3-propanediol, and butylene glycol.

5. The aerosol-type hair cosmetic composition according to claim 1 or 2, wherein the content of component (c) in the undiluted solution (X) is 0.5% by mass or more and 10% by mass or less.

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