Composition for washing hair

Abstract

To provide a hair washing composition which has good foamability and foam retention, can be washed without a squeaky feeling, suppresses a slimy feeling, can easily wash away stains such as oil, and can impart moderate smoothness to hair after hair washing.SOLUTION: Wherein a total amount of a content of the ingredient A and a content of the ingredient B (ingredient A+ ingredient B) is 10 to 20% by mass in 100% by mass of the composition, and a mass content ratio of the content of the ingredient A to the content of the ingredient B (ingredient A / ingredient B) satisfies a range of 0.5 to 2.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a hair washing composition. [Background technology]

[0002] The main function required of a hair-washing composition, or so-called shampoo, is to remove scalp dirt such as sebum and dirt adhering to the hair, etc. However, because the majority of conventional shampoos focus primarily on this dirt-removing function, they have been poor in cleansing properties and do not provide the shampoo's inherent "lathering" or "lather retention" when used on hair styled with a hair styling agent containing a large amount of oily agents such as wax, hydrocarbon oil, or silicone oil, leaving a slimy feeling and making it difficult to rinse the hair styling agent off the hair, resulting in various problems in terms of functionality and use.

[0003] In attempts to improve functionality, shampoo compositions that combine an ionic surfactant, a specific nonionic surfactant, and orange oil (see, for example, Patent Document 1), and hair wash compositions that combine a specific anionic surfactant, a specific amphoteric surfactant, and a specific nonionic surfactant (see, for example, Patent Document 2) have been proposed. However, these compositions tend to contain a high concentration of cleansing ingredients in order to fully demonstrate the shampoo's inherent cleansing properties, which can easily cause a rough feeling during and after washing, making the feel inferior, and they are not fully satisfactory in terms of texture, such as smoothness.

[0004] On the other hand, attempts to improve usability have also been actively made. Specifically, attempts have been made to improve texture by using cationic polymers. For example, a hair cleanser composition combining two specific cationic polymers, a sulfate surfactant, a carboxylate surfactant, and water (see, for example, Patent Document 3), and a hair cleanser composition combining an anionic surfactant, an amphoteric surfactant, a cationic polymer, and a pearlizing agent (see, for example, Patent Document 4) have been proposed.

[0005] However, these attempts were focused on the feel and texture of use, and even when applied to hair that had been styled with a hair styling agent containing a large amount of oil, the shampoo was unable to fully demonstrate its function. As such, no conventional shampoo was fully satisfactory in terms of both the functionality of cleansing ability and the texture of use. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-127329 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-222314 [Patent Document 3] Japanese Patent Application Publication No. 2017-203027 [Patent Document 4] Japanese Patent Application Publication No. 2022-164749 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made in view of the above-mentioned prior art, and aims to provide a hair wash composition that can lather well and maintain the lather, washing without a squeaky feeling, even when oils such as sebum or oils contained in hair styling products remain on the scalp and hair, and that can easily wash away oily and other dirt with a reduced stickiness, while still providing appropriate smoothness to the hair after washing. [Means for solving the problem]

[0008] The present invention provides a hair wash composition comprising the following components A, B, C, and D, wherein the total content of component A and component B (component A+component B) is 10 to 20 mass% in 100 mass% of the composition, and the mass content ratio of component A to component B (component A / component B) is in the range of 0.5 to 2. Component A: Amino acid type anionic surfactant Component B: Amphoteric surfactant Component C: Polyhydric alcohol condensation type nonionic surfactant Component D: Cationic polymer

[0009] In the hair wash composition of the present invention, the above-mentioned component A is preferably the following component A1 and component A2. Ingredient A1: Acyl glutamate Component A2: at least one selected from acylamino acid salts other than Component A1

[0010] The hair wash composition of the present invention preferably further contains the following component E. Component E: Ethylene oxide condensed nonionic surfactant

[0011] The hair wash composition of the present invention preferably further contains the following component F. Ingredient F: Charcoal [Effects of the Invention]

[0012] The hair wash composition of the present invention satisfies the above-mentioned constituent requirements for the "foaming," "foam retention," and "squeaky feeling" that significantly affect the preference for hair washing during the hair washing process, even when oils such as sebum or oils contained in hair styling products remain on the scalp and hair, thereby exhibiting excellent cleansing effects in that it forms highly foaming foam that lasts and can be washed with reduced squeaky feeling.

[0013] The hair wash composition of the present invention also has the effect of being excellent in removing dirt such as oil during the rinsing step from the hair, and capable of rinsing foam off the hair in a short time while suppressing a slimy feeling (good foam rinse-off).In addition, the hair wash composition of the present invention also has the effect of leaving the hair moderately smooth after washing. DETAILED DESCRIPTION OF THE INVENTION

[0014] The hair wash composition of the present invention contains the following component A, component B, component C, and component D. Component A: Amino acid type anionic surfactant Component B: Amphoteric surfactant Component C: Polyhydric alcohol condensation type nonionic surfactant Component D: Cationic polymer

[0015] Furthermore, the hair wash composition of the present invention satisfies the above-mentioned constituent components, and the total content of the above-mentioned component A and the content of the above-mentioned component B (component A + component B) is 10 to 20 mass% in 100 mass% of the composition, and the mass content ratio of the content of the above-mentioned component A to the content of the above-mentioned component B (component A / component B) satisfies the range of 0.5 to 2.

[0016] Each component used in the hair wash composition of the present invention will be described in detail below.

[0017] [Component A] Component A is an amino acid-based anionic surfactant. In the present invention, by using component A, it is possible to form highly foaming foam and exert an excellent cleansing effect.

[0018] Examples of the component A include acylamino acid salts such as acyl glutamate, acyl sarcosine salt, acyl glycine salt, acyl methyl alanine salt, acyl methyl taurine salt, acyl aspartate, etc. One of these components A may be used alone, or two or more may be used in appropriate combination.

[0019] Specific examples of acyl glutamates include potassium coconut oil fatty acid acyl glutamate (potassium cocoyl glutamate), sodium coconut oil fatty acid acyl glutamate (sodium cocoyl glutamate), triethanolamine coconut oil fatty acid acyl glutamate (TEA-cocoyl glutamate), potassium lauroyl glutamate, sodium lauroyl glutamate, triethanolamine lauroyl glutamate, potassium myristoyl glutamate, sodium myristoyl glutamate, potassium stearoyl glutamate, sodium stearoyl glutamate, disodium stearoyl glutamate, hydrogenated sodium bovine fatty acid acyl glutamate, coconut oil fatty acid / hydrogenated sodium bovine fatty acid acyl glutamate, etc. These components may be used alone or in appropriate combinations of two or more.

[0020] Specific examples of acyl sarcosine salts include coconut oil fatty acid sarcosine sodium (cocoyl sarcosine Na), coconut oil fatty acid sarcosine triethanolamine (cocoyl sarcosine TEA), lauroyl sarcosine sodium, lauroyl sarcosine triethanolamine, myristoyl sarcosine sodium, etc. These components may be used alone or in appropriate combination of two or more.

[0021] Specific examples of acylglycine salts include coconut oil fatty acid acylglycine potassium (cocoylglycine K), coconut oil fatty acid acylglycine sodium (cocoylglycine Na), coconut oil fatty acid acylglycine triethanolamine (cocoylglycine TEA), etc. These components may be used alone or in appropriate combination of two or more.

[0022] Specific examples of acylmethylalanine salts include coconut oil fatty acid methylalanine sodium (cocoyl methylalanine Na), coconut oil fatty acid methylalanine triethanolamine (cocoyl methylalanine TEA), lauroyl methylalanine sodium, lauroyl methylalanine triethanolamine, myristoyl methylalanine sodium, etc. These components may be used alone or in appropriate combination of two or more.

[0023] Specific examples of acyl methyl taurine salts include potassium coconut oil fatty acid methyl taurate (cocoyl methyl taurate potassium), sodium coconut oil fatty acid methyl taurate (cocoyl methyl taurate sodium), sodium coconut oil fatty acid methyl taurate taurine (cocoyl methyl taurate sodium), sodium lauroyl methyl taurate, sodium myristoyl methyl taurate, sodium palmitoyl methyl taurate, sodium stearoyl methyl taurate, sodium oleoyl methyl taurate, etc. These components may be used alone or in appropriate combination of two or more.

[0024] Specific examples of acylaspartates include sodium lauroyl aspartate, mixed fatty acid (C12, C14) acylaspartic acid triethanolamine (acyl (C12, C14) aspartic acid TEA), etc. These components may be used alone or in appropriate combination of two or more.

[0025] It should be noted that commercially available products can be used as the above-mentioned component A. The commercially available product of component A may be a single raw material or a mixed raw material with other components, and is not particularly limited as long as the desired effect is exhibited.

[0026] The content of component A in the hair wash composition of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of forming a high-quality foam with abundant foaming properties and exhibiting an excellent cleansing effect, it is usually preferably 4 to 12 mass % and more preferably 5 to 10 mass % relative to 100 mass % of the composition. Note that the content of component A is the amount converted into a pure content.

[0027] In this specification, the above-mentioned acyl glutamic acid salt may be referred to as "ingredient A1." Furthermore, an acyl amino acid salt other than the above-mentioned acyl glutamic acid salt may be referred to as "ingredient A2."

[0028] In the present invention, it is preferable to use the above-mentioned component A1 in combination with at least one selected from the above-mentioned component A2, from the viewpoint of forming a high-quality foam with excellent foaming properties and fully exhibiting an excellent cleansing effect, even when oils such as sebum or oils contained in hair styling products remain on the scalp and hair. In the present invention, it is more preferable to use at least one selected from acylglycine salts, acylmethylalanine salts, and acylmethyltaurine salts as the above-mentioned component A2. That is, in the present invention, from the viewpoint of maximizing the effect, it is preferable to use, as the above-mentioned component A, an acylglutamate (component A1) and at least one selected from acylglycine salts, acylmethylalanine salts, and acylmethyltaurine salts (component A2), and it is more preferable to use an acylglutamate (component A1) and at least two selected from acylglycine salts, acylmethylalanine salts, and acylmethyltaurine salts (component A2).

[0029] In the present invention, the mass ratio of the content of the component A2 to the content of the component A1 (component A2 / component A1) is preferably adjusted to be in the range of 0.3 to 1.5, and more preferably in the range of 0.5 to 1.2, thereby forming high-quality foam with excellent foaming properties and achieving even better cleansing effects.

[0030] The content of component A1 is not particularly limited as long as the desired effect is sufficiently exhibited, but is preferably 1 to 7 mass %, more preferably 1.5 to 6 mass %, based on 100 mass % of the composition. Note that the content of component A1 is the amount converted to a pure content.

[0031] On the other hand, the content of component A2 is not particularly limited as long as the desired effect is sufficiently exhibited, but it is preferably 1 to 7 mass % and more preferably 1.5 to 6 mass % relative to 100 mass % of the composition. Note that the content of component A2 is the amount converted to a pure content.

[0032] [Component B] Component B is an amphoteric surfactant. In the present invention, the use of component B not only produces high-quality foam and provides excellent cleansing effects, but also, when used in combination with component A, makes it possible to wash hair with reduced squeaky feeling during washing.

[0033] Examples of the component B include amino acid amphoteric surfactants such as glycine amphoteric surfactants and aminopropionic acid amphoteric surfactants, and betaine amphoteric surfactants such as amidopropyl betaine amphoteric surfactants, aminoacetic acid betaine amphoteric surfactants and sulfobetaine amphoteric surfactants. One of these components B may be used alone, or two or more may be used in appropriate combination.

[0034] Specific examples of glycine-type amphoteric surfactants include 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, undecylhydroxyethylimidazolinium betaine sodium, undecylcarboxymethoxyethylcarboxymethylimidazolinium betaine sodium, alkyldiamine ethylglycine hydrochloride, lauryldiaminoethylglycine sodium, etc. These components may be used alone or in appropriate combination of two or more.

[0035] Specific examples of aminopropionic acid type amphoteric surfactants include sodium laurylaminopropionate, sodium laurylaminodipropionate, triethanolamine laurylaminopropionate, etc. These components may be used alone or in appropriate combination of two or more.

[0036] Specific examples of amidopropyl betaine-type amphoteric surfactants include coconut oil fatty acid amidopropyl betaine (cocamidopropyl betaine), palm oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, etc. These components may be used alone or in appropriate combination of two or more.

[0037] Specific examples of aminoacetic acid betaine type amphoteric surfactants include coconut oil alkyl betaine, lauryl dimethyl aminoacetic acid betaine, stearyl dimethyl aminoacetic acid betaine, lauric acid amidopropyl acetic acid betaine, stearyl dihydroxyethyl betaine, etc. These components may be used alone or in appropriate combination of two or more.

[0038] Specific examples of sulfobetaine-type amphoteric surfactants include lauryl hydroxysulfobetaine (lauryl hydroxysultaine), lauramidopropyl hydroxysultaine, cocamidopropyl hydroxysultaine, etc. These components may be used alone or in appropriate combination of two or more.

[0039] In the present invention, among the above-mentioned component B, from the viewpoint that when used in combination with the above-mentioned component A, hair can be washed with reduced squeaky feeling during washing, it is preferable to use a betaine-type amphoteric surfactant, it is more preferable to use an amidopropyl betaine-type amphoteric surfactant, and it is most preferable to use coconut oil fatty acid amidopropyl betaine (cocamidopropyl betaine) or lauric acid amidopropyl betaine.

[0040] It should be noted that commercially available products can be used as the above-mentioned component B. The commercially available product of component B may be a single raw material or a mixed raw material with other components, and is not particularly limited as long as the desired effect is exhibited.

[0041] The content of component B in the hair wash composition of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of forming good quality foam and exhibiting excellent cleansing effect, and from the viewpoint of being able to wash hair with reduced squeaky feeling when used in combination with component A, it is usually 4 to 12 mass % and more preferably 5 to 10 mass % relative to 100 mass % of the composition. Note that the content of component B is the amount converted into a pure content.

[0042] The hair wash composition of the present invention is characterized in that the total content of the above-mentioned component A and the content of the above-mentioned component B (component A + component B) is 10 to 20% by mass, relative to 100% by mass of the composition, and the mass content ratio of the content of the above-mentioned component A to the content of the above-mentioned component B (component A / component B) falls within the range of 0.5 to 2. By satisfying the above-mentioned content range and mass content ratio range, even if oils such as sebum or oils contained in hair styling products remain on the scalp and hair, the composition forms high-quality foam with excellent foaming properties, exhibits excellent cleansing effects, and enables hair to be washed with reduced squeaky feeling during washing.

[0043] In the present invention, from the viewpoint of maximizing the effects of the present invention described above, the total content of the above-mentioned component A and the content of the above-mentioned component B (component A + component B) is more preferably 12 to 18 mass% in 100 mass% of the composition, and the mass content ratio of the content of the above-mentioned component A to the content of the above-mentioned component B (component A / component B) is more preferably in the range of 0.6 to 1.5.

[0044] [Component C] Component C is a polyhydric alcohol condensation type nonionic surfactant. In the present invention, by using component C, the high-quality foam formed during hair washing can be maintained, i.e., foam retention can be improved, and dirt such as oil can be easily washed away during hair washing. Furthermore, it is possible to achieve a good feeling when used, even when the foam is washed off from the hair in a short time, i.e., when the foam is easily removed.

[0045] Examples of the component C include fatty acid alkanolamides, which are nonionic surfactants obtained by condensing alkanolamines with fatty acids and classified as polyhydric alcohol condensed alkanolamides; and alkyl glucosides, which are nonionic surfactants obtained by condensing higher alcohols with glucose polymers and classified as polyhydric alcohol condensed alkyl glucosides. One of these components C may be used alone, or two or more may be used in appropriate combination. Among the fatty acid alkanolamides, alkanolamines are components that can be classified as amino alcohols, but because they are structurally similar to polyhydric alcohols, fatty acid alkanolamides are referred to herein as polyhydric alcohol condensed nonionic surfactants.

[0046] Specific examples of fatty acid alkanolamides include coconut oil fatty acid monoethanolamide (cocamide MEA), coconut oil fatty acid diethanolamide (cocamide DEA), lauric acid diethanolamide (lauramide DEA), myristic acid diethanolamide (myristamide DEA), stearic acid monoethanolamide (stearamide MEA), stearic acid diethanolamide (stearamide DEA), oleic acid diethanolamide (oleamide DEA), and the diethanolamide of mixed fatty acids (lauramide / myristamide) DEA. These components may be used alone or in appropriate combination of two or more.

[0047] Specific examples of alkyl glucosides include (C12-20) alkyl glucoside, arachyl glucoside, (caprylyl / capryl) glucoside, decyl glucoside, lauryl glucoside, cetearyl glucoside, coconut oil alkyl glucoside, etc. These components may be used alone or in appropriate combination of two or more.

[0048] In this specification, the above-mentioned fatty acid alkanolamide may be referred to as "component C1," and the above-mentioned alkyl glucoside may be referred to as "component C2."

[0049] In the present invention, from the viewpoint of not only improving foam durability but also improving wash-off and foam rinsing, it is preferable to use the above-mentioned component C1 in combination with the above-mentioned component C2, and it is more preferable to use at least one selected from coconut oil fatty acid monoethanolamide (cocamide MEA) and coconut oil fatty acid diethanolamide (cocamide DEA) in component C1 in combination with at least one selected from (caprylyl / capryl) glucoside and decyl glucoside in component C2 in combination, and it is most preferable to use coconut oil fatty acid diethanolamide (cocamide DEA) in combination with decyl glucoside.

[0050] It should be noted that a commercially available product can be used as the above-mentioned component C. The commercially available product of component C may be a single raw material or a mixed raw material with other components, and is not particularly limited as long as the desired effect is exhibited.

[0051] The content of component C in the hair wash composition of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of improving the durability of the formed high-quality foam, it is usually preferably 1 to 8 mass % and more preferably 2 to 6 mass % relative to 100 mass % of the composition. Note that the content of component C is the amount converted to a pure content.

[0052] [Component D] Component D is a cationic polymer. In the present invention, by using component D, it is possible to wash hair with reduced stiffness during washing. Furthermore, by using component D in combination with components A to C, it is possible to reduce the slimy feeling during washing and leave the hair with a moderate smoothness after washing.

[0053] Component D is a compound having a cationic nitrogen-containing group, and examples thereof include quaternary nitrogen-containing cellulose ether derivatives, quaternary nitrogen-containing guar gum derivatives, polymers containing structural units derived from monomers having a cationic nitrogen-containing group, polyglycol polyamine condensates and derivatives thereof, cationic starch, cationized dextran, etc. Component D may be used singly or in appropriate combination of two or more.

[0054] Specific examples of quaternary nitrogen-containing cellulose ether derivatives include O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride (a compound known as Polyquaternium-10, an INCI name).

[0055] Specific examples of quaternary nitrogen-containing guar gum derivatives include O-[2-hydroxy-3-(trimethylammonio)propyl]guar gum chloride (a compound known as Guar Hydroxypropyltrimonium Chloride, INCI name).

[0056] Examples of polymers containing structural units derived from monomers having nitrogen-containing groups exhibiting specific cationic properties include quaternary ammonium salt polymers such as polydimethylmethylenepiperidinium chloride (INCI name: Polyquaternium-6); diallyl quaternary ammonium salt / acrylamide copolymers such as dimethyldiallylammonium chloride-acrylamide copolymer (INCI name: Polyquaternium-7); diallyl quaternary ammonium salt / acrylic acid copolymers such as dimethyldiallylammonium chloride-acrylic acid copolymer (INCI name: Polyquaternium-22); diallyl quaternary ammonium salt / acrylamide / acrylic acid copolymers such as acrylamide-acrylic acid-dimethyldiallylammonium chloride copolymer (INCI name: Polyquaternium-39); and quaternized polyvinylpyrrolidone derivatives such as vinylpyrrolidone-N,N-dimethylaminoethyl methacrylate copolymer diethyl sulfate (INCI name: Polyquaternium-11). These components may be used alone or in appropriate combination of two or more.

[0057] In the present invention, among the above-mentioned component D, from the viewpoint of being able to wash hair with reduced squeaky feeling during washing, and from the viewpoint of reducing slimy feeling during washing and imparting appropriate smoothness to hair after washing, it is preferable to use at least one selected from quaternary nitrogen-containing cellulose ether derivatives, quaternary nitrogen-containing guar gum derivatives, and polymers containing a structural unit derived from a monomer having a nitrogen atom-containing group exhibiting cationic properties, it is more preferable to use at least one selected from O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose chloride, O-[2-hydroxy-3-(trimethylammonio)propyl]guar gum chloride, and dimethyldiallylammonium chloride-acrylamide copolymer, and it is most preferable to use at least two selected from O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose chloride, O-[2-hydroxy-3-(trimethylammonio)propyl]guar gum chloride, and dimethyldiallylammonium chloride-acrylamide copolymer.

[0058] It should be noted that commercially available products can be used as the above-mentioned component D. The commercially available product of component D may be a single raw material or a mixed raw material with other components, and is not particularly limited as long as the desired effect is exhibited.

[0059] The content of component D in the hair wash composition of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoints of reducing the squeaky feeling during hair washing, reducing the slimy feeling during hair washing, and imparting appropriate smoothness to the hair after washing, it is usually preferably 0.1 to 1 mass %, more preferably 0.3 to 0.8 mass %, based on 100 mass % of the composition. The content of component D is the amount converted to a pure content.

[0060] [Component E] The hair wash composition of the present invention preferably further contains an ethylene oxide condensed nonionic surfactant as component E. Use of component E can enhance the storage stability of the formulation. Furthermore, even if powder components that adversely affect foam quality, such as foaming and foam retention, are blended into the composition, the composition exhibits the effect of suppressing settling and aggregation of the powder components, dispersing them uniformly, and maintaining the dispersed state.

[0061] Examples of the component E include polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil, etc. One of these components E may be used alone, or two or more may be used in appropriate combination.

[0062] In the present invention, among the above-mentioned component E, it is preferable to use at least one selected from polyoxyethylene fatty acid esters and polyoxyethylene hydrogenated castor oil, from the viewpoint of further enhancing the storage stability of the formulation and maintaining the dispersed state of the powder components.

[0063] Specific examples of polyoxyethylene fatty acid esters include polyethylene glycol monolaurate, polyethylene glycol dilaurate, polyethylene glycol monomyristate, polyethylene glycol monopalmitate, polyethylene glycol dipalmitate, polyethylene glycol monostearate, polyethylene glycol isostearate, polyethylene glycol distearate, polyethylene glycol monooleate, polyethylene glycol dioleate, polyethylene glycol diricinoleate, etc. These components may be used alone or in appropriate combination of two or more.

[0064] The average number of moles of ethylene oxide (ethylene oxide) added in the polyoxyethylene fatty acid ester is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of imparting significantly superior storage stability to the preparation, it is usually preferably in the range of 40 to 200, more preferably in the range of 100 to 200. Furthermore, by using this component, even if a powder component that adversely affects foam quality such as foaming and foam retention is blended into the composition, the effect of suppressing sedimentation and aggregation of the powder component, dispersing it uniformly, and maintaining that dispersed state is exhibited.

[0065] The average number of moles of ethylene oxide (ethylene oxide) added in the polyoxyethylene hydrogenated castor oil is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of imparting significantly superior storage stability to the preparation, it is usually preferably in the range of 20 to 100, more preferably in the range of 40 to 80. One of these polyoxyethylene hydrogenated castor oils may be used alone, or two or more types having different average numbers of moles of ethylene oxide added may be used in appropriate combination.

[0066] It should be noted that commercially available products can be used as the above-mentioned component E. The commercially available product of component E is not particularly limited, and may be a single raw material or a mixed raw material with other components, as long as the desired effect is exhibited.

[0067] The content of component E in the hair wash composition of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of further improving the storage stability of the preparation and maintaining the dispersion state of the powder components, it is usually preferably 0.1 to 4 mass %, more preferably 0.5 to 2 mass %, based on 100 mass % of the composition. Note that the content of component E is the amount converted to a pure content.

[0068] [Component F] As described above, even if powder components that adversely affect foam quality, such as foaming and foam retention, are blended into the hair wash composition of the present invention, the composition can suppress the settling, floating, or aggregation of the powder components, disperse the powder components uniformly, and maintain that dispersed state, so it is preferable that the hair wash composition of the present invention further contains charcoal as component F. By using component F, it is possible not only to adsorb and remove dirt (oil) from the scalp and hair, but also to remove scalp odor derived from scalp sebum.

[0069] The charcoal that can be used in the hair wash composition of the present invention is not particularly limited as long as it is charcoal that can be used in cosmetics, but examples include medicinal charcoal, bamboo charcoal, binchotan charcoal, cypress charcoal, etc., and in the present invention, it is preferable to use powders of these charcoals. Among the above-mentioned component F, in the present invention, it is more preferable to use medicinal charcoal from the viewpoint of its excellent effect of removing dirt (oil) and odor, and its particle size is also preferably 1 to 500 μm.

[0070] It should be noted that commercially available products can be used as the above-mentioned component F. The commercially available product of component F may be a single raw material or a mixed raw material with other components, and is not particularly limited as long as the desired effect is exhibited.

[0071] The content of component F in the hair wash composition of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, but from the viewpoint of further enhancing the effect of removing dirt (oil) and odor, it is usually preferably 0.001 to 2 mass%, more preferably 0.005 to 1 mass%, based on 100 mass% of the composition. Note that the content of component F is the amount converted to a pure content.

[0072] [Other ingredients] In addition to the above-mentioned components, the hair wash composition of the present invention may contain, as appropriate depending on the purpose and application, surfactants other than the above-mentioned components A, B, C, and E; polyhydric alcohols, higher alcohols, lower alcohols, cooling agents, fragrances, colorants, antioxidants, preservatives, UV absorbers, inorganic pigments, pearlizing agents, vitamins, animal and plant extracts, sequestering agents, purified water, etc., within the range that does not impair the effects of the present invention. The above-mentioned other components may be used alone or in appropriate combination of two or more.

[0073] The method for producing the hair wash composition of the present invention is not particularly limited, and the composition can be produced by, for example, a known method. Specifically, for example, the above-mentioned components are mixed and stirred using, for example, a paddle mixer, a disper mixer, a homomixer, etc., but the present invention is not limited to these production methods.

[0074] The state of the hair wash composition of the present invention is not particularly limited as long as the desired effect is sufficiently exhibited, and it may be in any form such as a liquid, viscous liquid, gel, emulsion, or cream. The container into which the hair wash composition of the present invention is filled is also not particularly limited as long as the composition can be directly discharged, and examples thereof include tube containers, bottle containers, and pump-type containers. The hair wash composition of the present invention may be any of cosmetics, quasi-drugs, and pharmaceuticals. [Example]

[0075] The present invention will be described in more detail below based on examples, but the present invention is not limited to these examples. Unless otherwise specified, the blending amounts are expressed in "% by mass," and the blending amounts of all components in the tables are values ​​converted to pure contents. Furthermore, all evaluations were carried out at a constant temperature (25±2°C).

[0076] (Sample preparation) Hair wash compositions of Examples 1 to 10 and Comparative Examples 1 to 10 were prepared in accordance with standard methods according to the formulations shown in Tables 1 and 2, and subjected to the following evaluation tests. The results are also shown in Tables 1 and 2, respectively.

[0077] (Evaluation test) Two grams of a hair styling product (commercially available hair wax) containing a large amount of oils was applied to the hair, and the following evaluations were carried out one hour later. In order to conduct evaluation tests under various conditions, there were no restrictions on hair volume, length, hair type, hair thickness, or whether the hair was curly or not.

[0078] (Test Example 1: Evaluation during the washing process (when washing hair)) Using 3 g of each sample obtained in the Examples and Comparative Examples, participants were asked to wash their hair in the same manner as they would normally shampoo their hair, and a sensory evaluation was conducted on the "foaming," "foam retention," and "squeakiness" during the washing process (when washing hair), and scores were assigned according to the following evaluation points of 1 to 5. The evaluation was carried out by five expert evaluators, and the average score of each evaluator was used to determine the rating according to the following criteria.

[0079] The evaluation criteria for "foaming" were the faster the foam started to form and the volume of the foam was obtained, the higher the score. The evaluation criteria for "foam retention" were the better the persistence of the foam formed, the higher the score. The evaluation criteria for "squeakiness" were the higher the score was, the less squeakiness was felt when washing hair.

[0080] <Evaluation criteria> 5 points: very good 4 points: Good 3 points: normal 2 points: Defective 1 point: Very poor

[0081] <Judgment criteria> ◎:Average 4.0 or more ○: Average 3.0 or more and less than 4.0 △: Average 2.0 or more and less than 3.0 ×: Average less than 2.0

[0082] (Test Example 2: Evaluation during rinsing from hair) After the evaluation of Test Example 1, the subject was asked to rinse off the agent (foam) with warm water at 42°C, and a sensory evaluation was conducted on the "slippery feeling," "dirt removal," and "foam rinsing" during the rinsing process, and similarly, scores were assigned on a scale of 1 to 5. The evaluation was carried out by the same expert evaluators as in Test Example 1, and the average score of each evaluator was used to determine the judging criteria below.

[0083] The evaluation criteria for "stickiness" were given a higher score when there was no stickiness due to remaining hair styling agent during the rinsing process. The evaluation criteria for "dirt removal" were given a higher score when there was a strong feeling that oily dirt was being removed from the scalp and hair during the rinsing process. The evaluation criteria for "foam rinse-off" were given a higher score when foam could be washed off from the hair in a short time.

[0084] (Test Example 3: Evaluation after washing hair) After the evaluation of Test Example 2, the hair was dried with a towel and a hair dryer, and a sensory evaluation of the "smoothness" of the dried hair was conducted, and similarly to the above, a score was assigned on a scale of 1 to 5. The evaluation was carried out by the same expert evaluators as in Test Example 2, and the average score of each evaluator was used to determine the evaluation result according to the following criteria.

[0085] The evaluation criteria for "smoothness" were such that the less the hair caught when combed after drying (the easier it was to comb), the higher the score.

[0086] (Test Example 4: Evaluation of dispersion stability (formulation stability)) Each sample obtained in the Examples and Comparative Examples was sealed in a transparent glass container (a 100 mL mayonnaise bottle) and then stored in a thermostatic chamber at 40°C for one week. After the storage period, each sample was removed from the thermostatic chamber and allowed to stand at room temperature for one hour, after which the appearance was visually observed and evaluated according to the following evaluation criteria. Note that "room temperature" in the present invention means 1 to 30°C.

[0087] <Evaluation criteria for dispersion stability (formulation stability)> ○ (Good): No settling, floating, or aggregation of powder components is observed. △ (Insufficient): Slight settling, floating, or aggregation of powder components is observed × (bad): Settling, floating, or aggregation of powder components is clearly observed

[0088] [Table 1]

[0089] [Table 2]

[0090] The results shown in Tables 1 and 2 show that the hair wash compositions of the present invention obtained in each Example, compared to those obtained in each Comparative Example, form highly foamable foam during hair washing, even when oils such as sebum or oils contained in hair styling products remain on the scalp and hair, and the foam formed lasts, while washing hair with reduced squeaky feeling. It is also clear that the compositions are excellent in removing dirt such as oil, can be washed off from hair in a short time while reducing stickiness, and leave hair with a moderate smoothness after washing and drying.

[0091] In addition, it has been found that even when powder components that adversely affect foam quality, such as foaming and foam retention, are blended into the hair wash composition of the present invention, the powder components are prevented from settling, floating, or agglomerating, and are dispersed uniformly and maintained in that dispersed state.

[0092] In contrast, in Comparative Examples 1 to 10, which do not satisfy the essential components and requirements of the present invention, the effects of the present invention were not fully exhibited, and satisfactory results were not obtained in both the functional aspect of cleansing ability and the usability aspect of texture, etc. As is clear from these results, it can be said that in the present invention, only by satisfying the essential components and requirements has a composition been found that can exhibit significantly superior effects that are fully satisfactory in both the functional aspect and usability aspects, which are the main functions required of a hair wash composition.

Claims

1. Contains the following component A, the following component B, the following component C, and the following component D, the total content of the component A and the component B (component A+component B) is 10 to 20% by mass in 100% by mass of the composition, A hair wash composition, characterized in that the mass content ratio of the content of component A to the content of component B (component A / component B) falls within the range of 0.5 to 2. Component A: Amino acid type anionic surfactant Component B: Amphoteric surfactant Component C: Polyhydric alcohol condensation type nonionic surfactant Component D: Cationic polymer

2. 2. The hair wash composition according to claim 1, wherein the component A is the following component A1 and component A2: Component A1: Acyl glutamate Component A2: At least one acylamino acid salt other than Component A1

3. 3. The hair wash composition according to claim 1, further comprising the following component E: Component E: Ethylene oxide condensed nonionic surfactant

4. 4. The hair washing composition according to claim 3, further comprising the following component F: Component F: Charcoal

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