Hair cleansing composition and hair cleansing method

Abstract

To provide a composition for washing hair which has an excellent touch feeling of the hair subjected to hair treatment after washing with the composition for washing hair (a touch feeling of the hair after being subjected to hair treatment) and to provide a method for washing hair using the composition for washing hair.SOLUTION: There are provided: a composition for washing hair obtained by blending the following (A), (B) and (C): (A) acylmethyltaurine or a salt thereof, (B) a polyoxyethylene alkyl ether carboxylic acid or a salt thereof and (C) one or more selected from a fatty acid amidopropyl betaine and an alkyl dimethylamino acetate betaine, wherein the mass ratio of the blending amount of an anionic surfactant to the blending amount of an amphoteric surfactant is 1.8 or less; and a method for washing hair using the composition for washing hair.SELECTED DRAWING: None

Description

[Technical Field]

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

[0002] Hair cleansing compositions, used to wash hair, contain surfactants such as anionic surfactants as cleansing agents. In addition to surfactants, various other components are used to impart various functions to the hair cleansing compositions.

[0003] For example, Patent Document 1 below proposes a shampoo composition containing tetradecene sulfonate, polyoxyethylene alkyl ether sulfate, amphoteric surfactant, and cationic polymer in specific amounts, with a pH of 4.0 to 5.5, which provides good usability, good lathering and foam texture during washing, sufficient cleansing effect, and a smooth feel without leaving hair feeling stiff during rinsing. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-182368 [Overview of the project] [Problems that the invention aims to solve]

[0005] As described in Patent Document 1 above, the hair cleansing composition contains various components such as surfactants and cationic polymers that enhance the conditioning properties of the hair. However, when washing with a hair cleansing composition, components of the composition, such as salts like sodium chloride and cationic polymers contained in the raw materials of anionic and amphoteric surfactants, may remain on the hair even after rinsing. This residue of components can result in a rough texture and a lack of smoothness when hair treatment is applied after washing.

[0006] Therefore, there is a demand for a hair cleansing composition that provides excellent texture to hair after it has been cleansed with a hair cleansing composition and then treated with a hair treatment (texture of hair after hair treatment).

[0007] In view of the above circumstances, the object of the present invention is to provide a hair washing composition that provides excellent hair texture after hair treatment. Another objective of the present invention is to provide a hair washing method using a hair washing composition that provides excellent hair texture after hair treatment. [Means for solving the problem]

[0008] As a result of diligent research, the present inventors have found that by providing a hair cleansing composition that contains acylmethyl taurine or a salt thereof, polyoxyethylene alkyl ether carboxylic acid or a salt thereof, and one or more selected from fatty acid amidopropyl betaine and alkyldimethylaminoacetic acid betaine, and by setting the mass ratio of the amount of anionic surfactant to the amount of amphoteric surfactant in the hair cleansing composition to 1.8 or less, it is possible to provide a hair cleansing composition that has excellent texture after hair treatment (texture of hair that has been washed with the hair cleansing composition and then treated with a hair treatment), and have completed the present invention.

[0009] That is, the hair cleansing composition of the present invention, (A), (B), and (C) below: (A) Acylmethyltaurine or a salt thereof, (B) Polyoxyethylene alkyl ether carboxylic acid or a salt thereof, (C) One or more selected from fatty acid amidopropyl betaine and alkyldimethylaminoacetic acid betaine. It is formulated with The mass ratio of the amount of anionic surfactant to the amount of amphoteric surfactant is 1.8 or less.

[0010] From the viewpoint of providing superior hair texture after hair treatment, the hair cleansing composition according to the present invention preferably has a mass ratio of 0.5 or more of the amount of anionic surfactant to the amount of amphoteric surfactant.

[0011] From the viewpoint of increasing the viscosity of the hair cleansing composition, the hair cleansing composition according to the present invention preferably contains (D) a nonionic surfactant.

[0012] From the viewpoint of providing excellent manageability after rinsing, the hair cleansing composition according to the present invention preferably contains a glycerin fatty acid monoester as the (D) nonionic surfactant.

[0013] From the viewpoint of excellent manageability after rinsing, the hair washing composition according to the present invention preferably does not contain alkyl ether sulfate or its salt, or the amount of alkyl ether sulfate or its salt contained is 1% by mass or less.

[0014] The hair washing method of the present invention is a hair washing method using the hair washing composition of the present invention described above or the hair washing composition according to the present invention. [Effects of the Invention]

[0015] The present invention provides a hair cleansing composition that leaves hair feeling excellent after hair treatment. Furthermore, the present invention provides a hair washing method using a hair washing composition that results in hair with an excellent texture after hair treatment. [Modes for carrying out the invention]

[0016] Based on the embodiments of the present invention (hereinafter referred to as "the present embodiments"), the present invention will be described below.

[0017] <Hair cleaning composition> The hair cleaning composition of the present embodiments contains the following (A), (B), and (C): (A) acylmethyltaurine or its salt, (B) polyoxyethylene alkyl ether carboxylic acid or its salt, (C) at least one selected from fatty acid amide propyl betaine and alkyldimethylaminoacetic acid betaine, and the mass ratio of the blending amount of the anionic surfactant to the blending amount of the amphoteric surfactant is 1.8 or less.

[0018] In the following description, "acylmethyltaurine or its salt" may be referred to as (A), "polyoxyethylene alkyl ether carboxylic acid or its salt" may be referred to as (B), and "fatty acid amide propyl betaine" and / or "alkyldimethylaminoacetic acid betaine" may be referred to as (C). Note that "and / or" means both or either one. Also, (A), (B), and (C) may be collectively referred to as (A)-(C).

[0019] ((A) acylmethyltaurine or its salt) The hair cleaning composition of the present embodiments contains one or more kinds of acylmethyltaurine or its salt ((A)). The hair cleaning composition of the present embodiments can realize a hair cleaning composition with excellent touch after hair treatment by combining the acylmethyltaurine or its salt with (B) and (C) described below. Note that (A) is an anionic surfactant.

[0020] As the acylmethyltaurine or its salt, for example, those represented by the following formula (I) can be used. R a-CO-N(CH3)-CH2CH2SO3X (I) (R a X represents a hydrocarbon group having 8 to 24 carbon atoms. This hydrocarbon group may be linear or branched, and may be saturated or unsaturated. X represents hydrogen, alkali metals, alkaline earth metals, ammonium, alkanolamines, amino acids, or taurine or its salts (e.g., sodium taurate).

[0021] The hair cleansing composition of this embodiment may contain either acylmethyltaurine or a salt thereof alone, or it may contain a combination of acylmethyltaurine and a salt thereof.

[0022] Examples of the aforementioned acylmethyltaurine or its salts include caproylmethyltaurine or its salt, lauroylmethyltaurine or its salt, coconut oil fatty acid methyltaurine or its salt (for example, examples of cosmetic labeling names include cocoyl methyltaurine K, cocoyl methyltaurine Mg, cocoyl methyltaurine Na, cocoyl methyltaurine taurine Na, etc.), myristoyl methyltaurine or its salt, palmitoyl methyltaurine or its salt, stearoyl methyltaurine or its salt, oleoyl methyltaurine or its salt, and the like.

[0023] From the viewpoint of ensuring that the hair becomes soft to the touch after rinsing the hair cleansing composition of this embodiment, it is preferable that the hair cleansing composition of this embodiment contains coconut oil fatty acid methyl taurine or a salt thereof as acylmethyl taurine or a salt thereof.

[0024] The amount of (A) in the hair cleansing composition of this embodiment is not particularly limited and can be set as appropriate, as long as the mass ratio [AN / AM] described later is 1.8 or less. In the hair cleansing composition of this embodiment, the lower limit of the amount of (A) blended is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and even more preferably 1% by mass or more, from the viewpoint of excellent foaming ability. Furthermore, the upper limit of the amount of (A) in the hair washing composition of this embodiment is preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 3% by mass or less, from the viewpoint of reducing the risk that the viscosity of the hair washing composition will decrease and make it difficult to handle during hair washing.

[0025] ((B) Polyoxyethylene alkyl ether carboxylic acid or a salt thereof) The hair cleansing composition of this embodiment contains one or more polyoxyethylene alkyl ether carboxylic acids or their salts ((B)). The hair cleansing composition of this embodiment can achieve fine lathering due to the inclusion of the polyoxyethylene alkyl ether carboxylic acids or their salts. (B) is an anionic surfactant.

[0026] As the polyoxyethylene alkyl ether carboxylic acid or its salt, for example, one represented by the following formula (II) can be used. R b -O-(CH2CH2O)n-CH2-COOY (II) (R b (This represents a hydrocarbon group having 12 to 24 carbon atoms. The hydrocarbon group having 12 to 24 carbon atoms may be linear or branched, and may be saturated or unsaturated. Y represents hydrogen, alkali metals, alkaline earth metals, ammonium, alkanolamines, or basic amino acids. n indicates that the average number of moles added of ethylene oxide is 0.5 to 20.)

[0027] The hair cleansing composition of this embodiment may contain either polyoxyethylene alkyl ether carboxylic acid or a salt thereof, either alone or in combination with a salt of polyoxyethylene alkyl ether carboxylic acid.

[0028] Examples of the polyoxyethylene alkyl ether carboxylic acid or its salt include polyoxyethylene lauryl ether carboxylic acid or its salt with an average number of moles of ethylene oxide added of 2 to 20; polyoxyethylene tridecyl ether carboxylic acid or its salt with an average number of moles of ethylene oxide added of 2 to 20; polyoxyethylene myristyl ether carboxylic acid or its salt with an average number of moles of ethylene oxide added of 2 to 20; and polyoxyethylene cetyl ether carboxylic acid or its salt with an average number of moles of ethylene oxide added of 2 to 20.

[0029] Examples of the polyoxyethylene alkyl ether carboxylic acid or its salts include, as examples of cosmetic labeling names, laureth-3 carboxylic acid, laureth-3 carboxylic acid K, laureth-3 carboxylic acid Na, laureth-3 carboxylic acid TIPA, laureth-4 carboxylic acid, laureth-4 carboxylic acid K, laureth-4 carboxylic acid Na, laureth-4.5 acetate K, laureth-5 carboxylic acid, laureth-5 carboxylic acid K, laureth-5 carboxylic acid Na, laureth-6 carboxylic acid, laureth-6 carboxylic acid K, laureth-6 carboxylic acid Na, laureth-8 carboxylic acid, laureth-8 carboxylic acid Na, laureth-10 carboxylic acid, laureth-10 carboxylic acid K, laureth-11 carboxylic acid, laureth-11 carboxylic acid Na, laureth-12 carboxylic acid, laureth-12 carboxylic acid Na, laureth-13 carboxylic acid, laureth-13 carboxylic acid Na, laureth-14 carboxylic acid Examples include carboxylate, sodium laureth-14 carboxylate, sodium laureth-16 carboxylate, laureth-17 carboxylic acid, sodium laureth-17 carboxylate, trideceth-3 carboxylic acid, potassium trideceth-3 carboxylate, sodium trideceth-3 carboxylate, trideceth-4 carboxylic acid, potassium trideceth-4 carboxylate, sodium trideceth-4 carboxylate, sodium trideceth-6 carboxylate, trideceth-7 carboxylic acid, potassium trideceth-7 carboxylate, sodium trideceth-7 carboxylate, trideceth-8 carboxylic acid, sodium trideceth-8 carboxylate, sodium trideceth-12 carboxylate, trideceth-15 carboxylic acid, sodium trideceth-15 carboxylate, potassium trideceth-15 carboxylate, trideceth-19 carboxylic acid, potassium trideceth-19 carboxylate, sodium trideceth-19 carboxylate, myreth-3 carboxylic acid, myreth-5 carboxylic acid, and sodium ceteth-13 carboxylate.

[0030] From the viewpoint of superior smoothness during rinsing, the hair washing composition of this embodiment preferably contains a polyoxyethylene alkyl ether carboxylic acid or a salt thereof with an average number of moles of ethylene oxide added of 5 or more, and more preferably contains a polyoxyethylene alkyl ether carboxylic acid or a salt thereof with an average number of moles of ethylene oxide added of 7 or more.

[0031] The amount of (B) in the hair cleansing composition of this embodiment is not particularly limited and can be set as appropriate, as long as the mass ratio [AN / AM] described later is 1.8 or less. The lower limit of the amount of (B) in the hair cleansing composition of this embodiment is preferably 0.5% by mass or more, more preferably 1% by mass or more, and even more preferably 2% by mass or more, from the viewpoint of increasing the viscosity of the hair cleansing composition and improving ease of handling during hair cleansing. Furthermore, the upper limit of the amount of (B) in the hair cleansing composition of this embodiment is preferably 10% by mass or less, more preferably 8% by mass or less, and even more preferably 7% by mass or less, from the viewpoint of excellent manageability after rinsing.

[0032] ((C) Fatty acid amidopropyl betaine, alkyldimethylaminoacetic acid betaine) The hair cleansing composition of this embodiment contains one or more selected from fatty acid amidopropyl betaine and alkyldimethylaminoacetic acid betaine. The hair cleansing composition of this embodiment achieves excellent lathering through the inclusion of one or more selected from fatty acid amidopropyl betaine and alkyldimethylaminoacetic acid betaine. Both fatty acid amidopropyl betaine and alkyldimethylaminoacetic acid betaine are amphoteric surfactants.

[0033] As the fatty acid amidopropyl betaine, for example, one represented by the following formula (III) can be used. R c -CONH-(CH2)3-N + (CH3)2-CH2-COO - (III) (R c This represents a hydrocarbon group having 8 to 24 carbon atoms. The hydrocarbon group having 8 to 24 carbon atoms may be linear or branched, and may be saturated or unsaturated.

[0034] Examples of the fatty acid amide propyl betaine include caprylic acid amide propyl betaine, capric acid amide propyl betaine, undecylenic acid amide propyl betaine, lauric acid amide propyl betaine, myristic acid amide propyl betaine, coconut oil fatty acid amide propyl betaine, oleic acid amide propyl betaine, isostearic acid amide propyl betaine, ricinoleic acid amide propyl betaine, palm kernel fatty acid amide propyl betaine, olive oil fatty acid amide propyl betaine (cosmetic designation: olive amide propyl betaine), shea butter fatty acid amide propyl betaine (cosmetic designation: shea amide propyl betaine), babassu oil fatty acid amide propyl betaine (cosmetic designation: babassu amide propyl betaine), soybean oil fatty acid amide propyl betaine (cosmetic designation: soyamide propyl betaine), meadowfoam oil fatty acid amide propyl betaine (cosmetic designation: meadowfoam amide propyl betaine), and the like.

[0035] From the viewpoint that the hair after rinsing the hair cleaning composition has a soft texture, it is preferable that the hair cleaning composition of the present embodiment contains coconut oil fatty acid amide propyl betaine as the fatty acid amide propyl betaine.

[0036] As the alkyldimethylaminoacetic acid betaine, for example, those represented by the following formula (IV) can be used. R d -N + (CH3)2-CH2-COO - (IV) (R d represents a hydrocarbon group having 12 to 24 carbon atoms. The hydrocarbon group having 8 to 24 carbon atoms may be linear or branched, and may be saturated or unsaturated.)

[0037] Examples of the alkyldimethylaminoacetic acid betaine include lauryldimethylaminoacetic acid betaine, myristyldimethylaminoacetic acid betaine, cetyldimethylaminoacetic acid betaine, stearyldimethylaminoacetic acid betaine, coconut oil alkyldimethylaminoacetic acid betaine (cosmetic name: cocobetaine), oleyldimethylaminoacetic acid betaine, oleyl betaine, and behenyldimethylaminoacetic acid betaine.

[0038] In this embodiment, the hair cleansing composition is preferably formulated with lauryldimethylaminoacetic acid betaine as the alkyldimethylaminoacetic acid betaine, in order to reduce the risk of the viscosity of the hair cleansing composition decreasing and making it difficult to handle during hair cleansing.

[0039] From the viewpoint of excellent foaming ability, the hair cleansing composition of this embodiment preferably contains at least one of the fatty acid amidopropyl betaine and alkyldimethylaminoacetic acid betaine, with at least alkyldimethylaminoacetic acid betaine being included. Furthermore, from the viewpoint of excellent lathering and smoothness after rinsing, the hair washing composition of this embodiment is more preferably one in which both alkyldimethylaminoacetic acid betaine and alkyldimethylaminoacetic acid betaine are included as one or more selected from fatty acid amidopropyl betaine and alkyldimethylaminoacetic acid betaine.

[0040] The amount of (C) in the hair cleansing composition of this embodiment (referring to the total amount of fatty acid amidopropyl betaine and alkyldimethylaminoacetic acid betaine; the same applies in the following description) is not particularly limited and can be set as appropriate, as long as the mass ratio [AN / AM] described later is 1.8 or less. The lower limit of the amount of (C) in the hair cleansing composition of this embodiment is preferably 1% by mass or more, more preferably 3% by mass or more, and even more preferably 4% by mass or more, from the viewpoint of increasing the viscosity of the hair cleansing composition and improving ease of handling during hair cleansing. Furthermore, the upper limit of the amount of (C) in the hair cleansing composition of this embodiment is preferably 15% by mass or less, more preferably 13% by mass or less, and even more preferably 10% by mass or less, from the viewpoint of excellent manageability after rinsing.

[0041] (Mass ratio of the amount of anionic surfactant to the amount of amphoteric surfactant) The hair cleansing composition of this embodiment has a mass ratio of 1.8 or less of anionic surfactant to amphoteric surfactant. This mass ratio is sometimes referred to as the mass ratio [AN / AM]. The hair cleansing composition of this embodiment has a mass ratio [AN / AM] of 1.8 or less, resulting in hair with an excellent texture after hair treatment.

[0042] The amount of anionic surfactant mentioned above refers to the total amount of (A), (B), and other anionic surfactants other than (A) and (B) described later, as blended in the hair cleansing composition of this embodiment. If the hair cleansing composition of this embodiment does not contain any anionic surfactants other than (A) and (B) described later, the amount of anionic surfactant mentioned above refers to the total amount of (A) and (B) blended in the hair cleansing composition of this embodiment. The amount of anionic surfactant mentioned above may be denoted as AN. The hair cleansing composition of this embodiment is not particularly limited in terms of the amount of anionic surfactant (AN) blended, as long as the mass ratio [AN / AM] described above is 1.8 or less, for example, 0.6% by mass or more and 25% by mass or less.

[0043] The amount of amphoteric surfactants mentioned above refers to the total amount of (C) and other amphoteric surfactants other than (C) that are included in the hair cleansing composition of this embodiment. If no other amphoteric surfactants other than (C), as described later, are included in the hair cleansing composition of this embodiment, the amount of amphoteric surfactants mentioned above refers to the amount of (C) included in the hair cleansing composition of this embodiment. The amount of amphoteric surfactants mentioned above may be denoted as AM. The hair cleansing composition of this embodiment is not particularly limited in terms of the amount of amphoteric surfactant (AM) blended, as long as the mass ratio [AN / AM] described above is 1.8 or less, but for example, it is 1% by mass or more and 20% by mass or less.

[0044] The hair cleansing composition of this embodiment preferably has a mass ratio [AN / AM] of 0.5 or higher, from the viewpoint of providing a superior feel for the hair after hair treatment.

[0045] In this embodiment, the hair washing composition preferably has a mass ratio [AN / AM] of 0.7 or more and 1.8 or less, from the viewpoint of providing superior manageability after rinsing and texture after hair treatment. In this embodiment, the hair washing composition is more preferably in which the mass ratio [AN / AM] is 0.7 or more and 1.5 or less, from the viewpoint of being superior in terms of how easily the hair can be combed after rinsing. From the viewpoint of providing a superior feel after hair treatment, the hair cleansing composition of this embodiment is more preferably in which the mass ratio [AN / AM] is 0.7 or more and 1.2 or less. In this embodiment, the hair cleansing composition is particularly preferable to have a mass ratio [AN / AM] of 0.7 or more and less than 1.1, from the viewpoint of providing a superior feel after hair treatment.

[0046] (optional ingredient) The hair cleansing composition of this embodiment may contain any other components (optional components) besides (A) to (C). Optional components include known components that can be incorporated into hair cleansing compositions, such as anionic surfactants other than (A) and (B), amphoteric surfactants other than (C), nonionic surfactants ((D)), cationic surfactants, polymer compounds such as cationic polymers, water, oils, lower alcohols, polyhydric alcohols, sugars, amino acids, plant and animal extracts, inorganic compounds, acids, alkalis, fragrances, preservatives, metal ion chelating agents, and UV absorbers. These optional components may be used individually or in combination of two or more.

[0047] (Anionic surfactants other than (A) and (B)) The hair cleansing composition of this embodiment may contain one or more anionic surfactants other than (A) and (B). Known anionic surfactants that can be incorporated into hair cleansing compositions can be used as the anionic surfactants other than (A) and (B). The anionic surfactants other than (A) and (B) may have hydrocarbon groups with 8 to 24 carbon atoms. These hydrocarbon groups may be linear or branched, and may be saturated or unsaturated. Furthermore, the hair cleansing composition of this embodiment may not contain any anionic surfactants other than (A) and (B).

[0048] Other anionic surfactants besides (A) and (B) above include, for example, carboxylic acid-based anionic surfactants (e.g., N-acyl amino acids other than (A) or their salts, fatty acid amide ether carboxylic acids or their salts, acyl lactic acid or its salts, higher fatty acid salts, etc.), sulfonic acid-based anionic surfactants (e.g., α-olefin sulfonic acid or its salts, alkane sulfonic acid or its salts, α-sulfo fatty acid methyl ester or its salts, acyl isethionic acid or its salts, alkyl glycidyl ether sulfonic acid or its salts, alkyl sulfosuccinic acid or its salts, alkyl sulfosuccinic acid or its salts, alkyl sulfosuccinic acid Examples of such surfactants include acetic acid or its salts, alkylbenzene sulfonic acid or its salts, alkylnaphthalene sulfonic acid or its salts, etc., sulfate-based anionic surfactants (e.g., alkyl sulfate or its salts, alkyl ether sulfate or its salts, alkylaryl ether sulfate or its salts, fatty acid alkanolamide sulfate or its salts, fatty acid monoglyceride sulfate or its salts, etc.), and phosphate-based anionic surfactants (alkyl phosphoric acid or its salts, alkyl ether phosphoric acid or its salts, alkylaryl ether phosphoric acid or its salts, fatty acid amide ether phosphoric acid or its salts, etc.). Examples of the salts include sodium salts, potassium salts, triethanolamine salts, and magnesium salts.

[0049] When an anionic surfactant other than (A) and (B) is incorporated into the hair cleansing composition of this embodiment, the amount of the surfactant is not particularly limited, as long as the mass ratio [AN / AM] described above is 1.8 or less. For example, the amount of the anionic surfactant other than (A) and (B) is 0.5% by mass or more and 5% by mass or less. Furthermore, the hair cleansing composition of this embodiment may also contain anionic surfactants other than (A) and (B), and the amount of such surfactants may be 0.1% by mass or less.

[0050] From the viewpoint of excellent manageability after rinsing, the hair washing composition of this embodiment preferably does not contain alkyl ether sulfate or its salt, or the amount of alkyl ether sulfate or its salt contained is 1% by mass or less. Furthermore, in the hair cleansing composition of this embodiment, when alkyl ether sulfate or a salt thereof is included, from the viewpoint of excellent manageability after rinsing, the upper limit of the amount included is more preferably 0.5% by mass or less, even more preferably 0.1% by mass or less, and particularly preferably 0.01% by mass or less. Also, in the hair cleansing composition of this embodiment, when alkyl ether sulfate or a salt thereof is included, the lower limit of the amount included is, for example, 0.001% by mass or more.

[0051] In this embodiment, the hair washing composition is most preferably one that does not contain alkyl ether sulfate or its salt, from the viewpoint of having excellent manageability after rinsing.

[0052] Examples of the alkyl ether sulfate or salt thereof include polyoxyethylene lauryl ether sulfate or salt thereof of polyoxyethylene with an average number of added moles of ethylene oxide exceeding 0 and 10 or less; polyoxyethylene alkyl(12,13) ​​ether sulfate or salt thereof with an average number of added moles of ethylene oxide exceeding 0 and 10 or less; polyoxyethylene alkyl(11-15) ether sulfate or salt thereof with an average number of added moles of ethylene oxide exceeding 0 and 10 or less; and polyoxyethylene alkyl(12-15) ether sulfate or salt thereof with an average number of added moles of ethylene oxide exceeding 0 and 10 or less. Examples of the salt include sodium salt, potassium salt, triethanolamine salt, and magnesium salt.

[0053] (Amphoteric surfactants other than (C)) The hair cleansing composition of this embodiment may contain one or more amphoteric surfactants other than (C). Known amphoteric surfactants that can be incorporated into hair cleansing compositions can be used as the amphoteric surfactants other than (C). The amphoteric surfactants other than (C) may have hydrocarbon groups with 8 to 24 carbon atoms. These hydrocarbon groups may be linear or branched, and may be saturated or unsaturated. Furthermore, the hair cleansing composition of this embodiment may not contain any amphoteric surfactants other than (C).

[0054] Examples of amphoteric surfactants other than those in (C) above include imidazoline-type amphoteric surfactants (e.g., N-coconut oil fatty acid acyl-N'-carboxyethyl-N'-hydroxyethylethylenediamine sodium, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, undecyl-N-hydroxyethyl-N-carboxymethylimidazolinium betaine, etc.), sulfobetaine-type amphoteric surfactants (e.g., N-alkyl-N,N-dimethylammonium-N-propylsulfonate sodium, N-alkyl-N,N-dimethylammonium-N-(2-hydroxypropyl)sulfonate sodium, N-fatty acid amidopropyl-N,N-dimethylammonium-N-(2-hydroxypropyl)sulfonate sodium, etc.), and amidoamine oxide-type amphoteric surfactants (e.g., lauric acid amidopropyl dimethylamine oxide, etc.).

[0055] When an amphoteric surfactant other than (C) is incorporated into the hair cleansing composition of this embodiment, the amount incorporated is not particularly limited, as long as the mass ratio [AN / AM] described above is 1.8 or less. For example, the amount of the amphoteric surfactant other than (C) is 0.5% by mass or more and 5% by mass or less. Furthermore, the hair cleansing composition of this embodiment may also contain amphoteric surfactants other than (C), and the amount of these surfactants may be 0.1% by mass or less.

[0056] (Total amount of anionic surfactant and amphoteric surfactant) In this embodiment of the hair cleansing composition, the total amount of anionic surfactant (AN) and amphoteric surfactant (AM) is not particularly limited and can be set as appropriate. The total amount of anionic surfactant and amphoteric surfactant is sometimes referred to as [AN+AM].

[0057] In this embodiment, from the viewpoint of reducing the risk of skin irritation, the upper limit of [AN+AM] is preferably 25% by mass or less, more preferably 22% by mass or less, and even more preferably 20% by mass or less. The hair washing composition of this embodiment has a lower limit of [AN+AM] of, for example, 5% by mass or more.

[0058] ((D) Nonionic surfactant) The hair cleansing composition of this embodiment may contain one or more nonionic surfactants. The viscosity of the hair cleansing composition of this embodiment can be increased by the inclusion of the nonionic surfactants. Furthermore, increasing the viscosity of the hair cleansing composition improves its ease of handling during hair cleansing. As the nonionic surfactant, known nonionic surfactants that can be incorporated into hair cleansing compositions can be used. The nonionic surfactant may have hydrocarbon groups having 8 to 24 carbon atoms. The hydrocarbon groups having 8 to 24 carbon atoms may be linear or branched, and may be saturated or unsaturated.

[0059] Examples of the nonionic surfactants include esters of polyhydric alcohols and fatty acids (e.g., monoesters of polyhydric alcohols and fatty acids such as propylene glycol fatty acid esters, glycerin fatty acid esters, and butylene glycol fatty acid esters; sorbitan fatty acid esters; polyglycerin fatty acid esters; etc.), alkyl alkanolamides (e.g., coconut oil fatty acid N-methylethanolamide), polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitol tetra fatty acid esters, polyoxyethylene glycerin fatty acid esters, alkyl glucosides, sucrose fatty acid esters, and polyoxyethylene hydrogenated castor oil. As the nonionic surfactant, for example, one or more selected from glycerin fatty acid monoesters and alkyl alkanolamides may be used.

[0060] As the nonionic surfactant, glycerin fatty acid monoester is preferred from the viewpoint of excellent smoothness after rinsing. As the glycerin fatty acid monoester, for example, a monoester of glycerin and a fatty acid having 6 to 22 carbon atoms can be used. The fatty acid having 6 to 22 carbon atoms is a fatty acid having a linear or branched saturated or unsaturated hydrocarbon group. Examples of the glycerin fatty acid monoester include glyceryl caprate, glyceryl caprylate, glyceryl laurate, glyceryl oleate, and glyceryl isostearate. From the viewpoint of superior manageability after rinsing, the hair washing composition of this embodiment is preferably one that contains glyceryl caprate as the glycerin fatty acid monoester.

[0061] The amount of nonionic surfactant in the hair cleansing composition of this embodiment is not particularly limited and can be set as appropriate. For example, the amount of nonionic surfactant is 0.5% by mass or more and 10% by mass or less.

[0062] (Cationic polymer) The hair cleansing composition of this embodiment may contain one or more cationic polymers. The hair cleansing composition of this embodiment can improve the smoothness of the hair when rinsing by incorporating the cationic polymers. As the cationic polymer, known cationic polymers that can be incorporated into hair cleansing compositions can be used. The cationic polymer refers to a polymer having a cationic group or a functional group that can be ionized into a cationic group.

[0063] Examples of the cationic polymer include cationized cellulose (e.g., O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose chloride, hydroxyethylcellulose dimethyldiallylammonium chloride, etc.), cationized guar gum (e.g., O-[2-hydroxy-3-(trimethylammonio)propyl]guar gum chloride, hydroxypropylguar hydroxypropyltrimonium chloride, etc.), vinylpyrrolidone-N,N-dimethylaminoethyl methacrylate copolymer diethyl sulfate, polydimethylmethylenepyrrolidinium chloride, dimethyldiallylammonium chloride-acrylamide copolymer, acrylamide-acrylic acid-dimethyldiallylammonium chloride copolymer, N,N-dimethylaminoethyl methacrylate diethyl sulfate-N,N-dimethylacrylamide-polyethylene glycol dimethacrylate copolymer, and the like.

[0064] The amount of cationic polymer in the hair cleansing composition of this embodiment is not particularly limited and can be set as appropriate. For example, the amount of cationic polymer is 0.1% by mass or more and 5% by mass or less.

[0065] The hair cleansing composition of this embodiment is preferably one that contains water, from the viewpoint of facilitating the blending of (A) to (C). The amount of water is not particularly limited and can be set as appropriate, but for example, it is 60% by mass or more and 85% by mass or less.

[0066] (acid) The hair cleansing composition of this embodiment may contain one or more acids. The pH of the hair cleansing composition of this embodiment can be adjusted by the addition of the acids. As the acids, organic acids (e.g., citric acid, lactic acid, glycolic acid, malic acid, etc.) and inorganic acids (e.g., phosphoric acid, etc.) can be used. The amount of the acids added to the hair cleansing composition of this embodiment is, for example, 0.01% by mass or more and 2% by mass or less.

[0067] (alkali) The hair cleansing composition of this embodiment may contain one or more alkalis. The pH of the hair cleansing composition of this embodiment can be adjusted by the addition of the alkalis. As the alkalis, inorganic alkalis (e.g., potassium hydroxide, sodium hydroxide, ammonia, etc.) and organic alkalis (e.g., aminoethylpropanol, arginine, triethanolamine, etc.) can be used. The amount of alkali added to the hair cleansing composition of this embodiment is, for example, 0.01% by mass or more and 2% by mass or less.

[0068] (Preservative) The hair cleansing composition of this embodiment may contain one or more preservatives. The hair cleansing composition of this embodiment can have its storage stability improved by the inclusion of the preservatives. Examples of the preservatives include benzoic acid or its salts, undecylenic acid, salicylic acid, sorbic acid or its salts, dehydroacetic acid or its salts, parahydroxybenzoic acid esters (e.g., methyl parahydroxybenzoate or its salts, propyl parahydroxybenzoate, isopropyl parahydroxybenzoate, butyl parahydroxybenzoate, isobutyl parahydroxybenzoate, benzyl parahydroxybenzoate, etc.), methylchloroisothiazolinone (5-chloro-2-methyl-4-isothiazolinone-3-one), methylisothiazolinone (2-methyl-4-isothiazolinone-3-one), isopropylmethylphenol, and chlorhexidine gluconate. Examples of preservatives include chlorphenesin, chloroxylenol, dichlorooxylenol, thymol, chlorthymol, trichlorocarbanilide, trichlorohydroxyphenyl ether, chlorocarban, phenethyl alcohol, phenoxyethanol, hexachlorophene, photosensitizer 101, photosensitizer 201, photosensitizer 401, paradimethylaminostyrylheptylmethylthiazolium iodide, hinokitiol, (silver / copper) zeolite, chloramine T, chlorhexidine, dibromopropamidine isethionate, zinc pyrithione, piroctone olamine, sodium pyrithione, and polyaminopropyl biguanide. The amount of the preservative in the hair cleansing composition of this embodiment is, for example, 0.01% by mass or more and 1% by mass or less.

[0069] (exterior) The appearance of the hair cleansing composition of this embodiment is not particularly limited, but can be transparent, opaque, or pearlescent, for example. Transparent means, for example, a state in which the appearance can be seen through a colorless, transparent glass bottle when the hair cleansing composition of this embodiment is left standing in the glass bottle at 25°C.

[0070] (viscosity) The viscosity of the hair cleansing composition of this embodiment is not particularly limited and can be set as appropriate. The viscoelasticity value, which is an indicator of viscosity in the hair cleansing composition of this embodiment, was measured using a rheometer (for example, a stress-controlled rheometer "Rheo Stress 6000" (product name) manufactured by HAAKE) under the following conditions: measurement temperature: 25°C, cone plate sensor diameter: 35 mm, cone plate sensor tilt angle: 2°, steady-state flow curve mode, waiting time of 1 minute, with a shear rate of 36 s². -1 The viscoelasticity values ​​measured are between 100 mPa·s and 30,000 mPa·s.

[0071] (Dosage form) The dosage form of the hair cleansing composition of this embodiment is not particularly limited and can be liquid, paste, or the like. When the dosage form of the hair cleansing composition of this embodiment is adjusted to be liquid, for example, the viscoelasticity value measured with a rheometer under the measurement conditions described above is 30,000 mPa·s or less.

[0072] (pH) The pH of the hair cleansing composition of this embodiment at 25°C is not particularly limited, but for example, it is between 4.0 and 7.0.

[0073] (Product form) The product form of the hair cleansing composition of this embodiment is not particularly limited, but an example is a hair shampoo.

[0074] (Manufacturing method) The hair cleansing composition of this embodiment can be manufactured by employing a known manufacturing method for hair cleansing compositions, depending on the dosage form.

[0075] (Application) The hair cleansing composition of this embodiment is used for hair cleansing, but may also be used for both hair cleansing and scalp cleansing.

[0076] The hair cleansing composition of this embodiment is used, for example, before processing a hair treatment composition containing a cationic surfactant.

[0077] (cationic surfactant) As the cationic surfactant in the hair treatment composition containing the cationic surfactant, any known cationic surfactant that can be incorporated into a hair treatment composition (for example, a cationic surfactant having a hydrocarbon group with 12 to 24 carbon atoms (the hydrocarbon group may be linear or branched, and may be saturated or unsaturated)) may be used. Examples of the cationic surfactants include alkyl quaternary ammonium salts (e.g., long-chain alkyltrimethyl quaternary ammonium salts, di-long-chain alkyldimethyl quaternary ammonium salts, tri-long-chain alkylmonomethyl quaternary ammonium salts, benzalkonium-type quaternary ammonium salts, monoalkyl ether-type quaternary ammonium salts, etc.) and amine salts (e.g., alkylamine salts, fatty acid amidoamine salts, ester-containing tertiary amine salts, Arcover-type tertiary amine salts, etc.). The amount of cationic surfactant in the hair treatment composition is, for example, 0.5% by mass or more and 5% by mass or less.

[0078] The hair treatment composition containing the cationic surfactant may also contain other known components that can be incorporated into hair treatment compositions. Other components besides the cationic surfactant include, for example, anionic surfactants, amphoteric surfactants, nonionic surfactants, higher alcohols, lower alcohols, polyhydric alcohols, sugars, oils and fats, ester oils, fatty acids, hydrocarbons, waxes, silicones, synthetic polymer compounds, semi-synthetic polymer compounds, natural polymer compounds, proteins, amino acids, plant and animal extracts, microbial-derived substances, inorganic compounds, fragrances, preservatives, metal ion sequestering agents, ultraviolet absorbers, dyes, reducing agents, oxidizing agents, dyes, pigments, and water.

[0079] Furthermore, the hair treatment composition containing the cationic surfactant may also contain, in addition to the cationic surfactant, at least a higher alcohol (for example, a higher alcohol having a hydrocarbon group with 12 to 24 carbon atoms (the hydrocarbon group may be linear or branched, and may be saturated or unsaturated)) and water. For example, the amount of the higher alcohol is 0.5% by mass or more and 15% by mass or less, and the amount of water is 60% by mass or more and 90% by mass or less.

[0080] The hair treatment composition containing the cationic surfactant is, for example, a treatment that is rinsed off after use.

[0081] The hair treatment composition containing the aforementioned cationic surfactant can take the form of a rinse, conditioner, or hair treatment.

[0082] (How to use) The hair cleansing composition of this embodiment may be used in accordance with known methods for using hair cleansing compositions. For example, one method of use may involve washing hair that has been wet with water using the hair cleansing composition of this embodiment, rinsing with water, then applying a suitable hair treatment composition containing a cationic surfactant to the wet hair after washing, rinsing, and drying the hair.

[0083] <Hair washing method> The hair washing method of this embodiment is a hair washing method using the hair washing composition of this embodiment described above. As for the hair washing method of this embodiment, in addition to using the hair washing composition of this embodiment, any known hair washing method may be used. Therefore, the method of using the hair washing composition of this embodiment described above may also be used. [Examples]

[0084] The present invention will be described in detail below based on examples, but the present invention should not be interpreted as being limited based on the description of these examples.

[0085] (Examples 1-8, Comparative Examples 1-6) The evaluation results of the hair cleansing compositions of Examples 1-8 and Comparative Examples 1-6 are shown below.

[0086] (Preparation of Examples 1-8 and Comparative Examples 1-6) Each of the hair cleansing compositions in Examples 1-8 and Comparative Examples 1-6 was prepared by mixing the components using a known method for producing hair cleansing compositions, so that the compositions shown in Tables 1-4 below were obtained. The pH adjusters listed in Tables 1-4 were citric acid or potassium hydroxide.

[0087] In Tables 1 to 4 below, the values ​​in the columns for each component, the amount of anionic surfactant (AN), the amount of amphoteric surfactant (AM), and the total amount of anionic and amphoteric surfactants ([AN+AM]) are in mass percent, and the "-" notation in the component column indicates that it is not included. Note that in Tables 1 to 4, when the pH adjuster is indicated as "appropriate amount," it means that the amount of pH adjuster (citric acid or potassium hydroxide) is such that the pH of each hair cleansing composition at 25°C becomes 5.4. Also, in Tables 1 to 4 below, when the water is indicated as "amount to total 100," it means that the amount of water is such that the total amount of water and other components combined is 100% by mass. In addition, the notations "4.5EO" and "10E.O." in Tables 1 to 4 below for polyoxyethylene lauryl ether sodium acetate (4.5EO) and polyoxyethylene lauryl ether sodium acetate (10E.O.) indicate that the average number of moles of ethylene oxide added is 4.5 and 10, respectively.

[0088] The hair cleansing compositions of Examples 1-8, Comparative Examples 1-4, and Comparative Example 6 were all transparent in appearance and in liquid form. The hair cleansing composition of Comparative Example 5 did not contain (C) and contained 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine as an amphoteric surfactant; however, precipitation occurred after preparation, and therefore evaluation was not performed.

[0089] (Evaluation of hair texture after hair treatment) The hair cleansing compositions prepared in Examples 1-8, Comparative Examples 1-4, and Comparative Example 6 described above were used to evaluate the "texture of the hair after hair treatment" using the evaluation method shown below.

[0090] (Evaluation method) Multiple hair bundles weighing 5g and approximately 30cm in length were prepared using hair from the same Japanese woman that had undergone hair coloring. After rinsing the prepared hair bundles with water, the bundles were washed with 0.5g of each hair cleansing composition from Examples 1-8, Comparative Examples 1-4, and Comparative Example 6, and then rinsed with water. Subsequently, 0.5g of a hair treatment containing a cationic surfactant (Milbon's "Deesse's Neu Due Willow Luxe Hair Treatment") was applied to the wet hair bundles, and after rinsing with running water, the bundles were dried with a hairdryer. The "texture of the hair after hair treatment" of the dried hair bundles was sensory evaluated by a panel of six people who routinely evaluate hair compositions, according to the evaluation criteria below.

[0091] (Evaluation criteria: Hair texture after hair treatment) ○: Compared to hair treated with a standard hair cleansing composition, it has a superior feel after hair treatment (compared to hair strands treated with a standard hair cleansing composition, when you run your hand through the hair strands from the roots to the tips, you can easily feel a coating on the surface of the hair, resulting in a superior moist and smooth feel). Equivalent: The texture after hair treatment is equivalent to that of hair treated with a standard hair cleansing composition (the texture of the hair bundle is similar to that of a hair bundle treated with a standard hair cleansing composition when running your hand through the hair bundle from root to tip). ×: Compared to the standard hair cleansing composition, the texture after hair treatment is inferior (compared to a hair bundle treated with the standard hair cleansing composition, when running your hand through the hair bundle from the root to the tip, you don't feel a film on the hair surface, and the hair has an inferior moist texture).

[0092] (Evaluation of "lathering ability" and "smoothness of hair after rinsing") When evaluating the "texture of hair after hair treatment" as described above, we also evaluated the "lathering" and "smoothness of the hair after rinsing" for each hair cleansing composition in Examples 1-8, Comparative Examples 1-4, and Comparative Example 6. The "lathering" was evaluated by a panel of six panelists who routinely evaluate hair compositions, based on the following evaluation criteria, after washing hair strands with each of the hair cleansing compositions in Examples 1-8, Comparative Examples 1-4, and Comparative Example 6. The "smoothness after rinsing" was also evaluated by a panel of six panelists who routinely evaluate hair compositions, based on the following evaluation criteria, after washing hair strands with each of the hair cleansing compositions in Examples 1-8, Comparative Examples 1-4, and Comparative Example 6 and rinsing with water.

[0093] (Evaluation criterion: foaming) ○: Compared to the standard hair cleansing composition, it produces superior lather during hair cleansing (more foam than the standard hair cleansing composition). Equivalent: Compared to a standard hair cleansing composition, the foaming during hair cleansing is equivalent (the amount of foam is about the same as a standard hair cleansing composition). ×: Compared to the standard hair cleansing composition, it produces less foam during hair cleansing (less foam than the standard hair cleansing composition).

[0094] (Evaluation criteria: how smooth your fingers feel after rinsing) ○: Compared to the standard hair cleansing composition, it provides superior smoothness after rinsing (compared to the standard hair cleansing composition, there is less squeaky feeling when running fingers through wet hair after rinsing with water). Equivalent: Compared to a standard hair cleansing composition, the smoothness of the hair after rinsing is equivalent (compared to a standard hair cleansing composition, the smoothness of the hair when fingers are run through wet hair after rinsing with water is about the same). ×: Compared to the standard hair cleansing composition, the hair feels less smooth after rinsing (compared to the standard hair cleansing composition, the hair feels more squeaky when fingers are run through wet hair after rinsing with water).

[0095] (Evaluation results) Tables 1-4 below show the evaluation results for each hair cleansing composition in Examples 1-8, Comparative Examples 1-4, and Comparative Example 6.

[0096] (Evaluation results for Example 1 and Comparative Examples 1-4) Table 1 below shows the composition of each ingredient, along with the evaluation results of the hair cleansing compositions of Example 1 and Comparative Examples 1-4. The hair cleansing composition of Comparative Example 2 was used as the standard for each evaluation. Furthermore, the hair cleansing composition of Comparative Example 4 was used as a criterion for evaluating the texture of the hair after hair treatment, in addition to the hair cleansing composition of Comparative Example 2. Also, the hair cleansing composition of Comparative Example 4 was used as a criterion for evaluating the ease of combing after rinsing, in addition to the hair cleansing composition of Comparative Example 2.

[0097] [Table 1]

[0098] The results shown in Table 1 indicate that the hair cleansing composition of Example 1, which contains (A), is superior to the hair cleansing compositions of Comparative Examples 1 to 4, which do not contain (A), in terms of the feel of the hair after treatment. Furthermore, the hair cleansing composition of Example 1, which contains (A), is also superior to the hair cleansing compositions of Comparative Examples 1 to 3, which do not contain (A), in terms of lathering and ease of combing after rinsing.

[0099] (Evaluation results for Examples 1-3) Table 2 below shows the evaluation results of the hair cleansing compositions of Examples 1 to 3, along with the composition of each ingredient. The evaluation criteria for each composition were based on the hair cleansing composition of Example 1. Comparative Example 5 is included in Table 2 for reference only. The hair cleansing composition of Comparative Example 5 is indicated with a slash because it was not evaluated.

[0100] [Table 2]

[0101] As shown in Table 2, the hair cleansing composition of Example 2, which contains (C) lauryldimethylaminoacetic acid betaine, and the hair cleansing composition of Example 3, which contains (C) coconut oil fatty acid amidopropyl betaine and lauryldimethylaminoacetic acid betaine, are superior to the hair cleansing composition of Example 1, which contains (C) coconut oil fatty acid amidopropyl betaine, in terms of the feel of the hair after treatment. Furthermore, the hair cleansing composition of Example 3, which contains coconut oil fatty acid amidopropyl betaine and lauryldimethylaminoacetic acid betaine of (C), is found to be superior in lathering and smoothness of the hair after rinsing compared to the hair cleansing compositions of Examples 1 and 2, which contain either coconut oil fatty acid amidopropyl betaine or lauryldimethylaminoacetic acid betaine of (C). Therefore, it can be seen that using (C) coconut oil fatty acid amidopropyl betaine and lauryl dimethylaminoacetic acid betaine in combination results in superior evaluation of hair texture after treatment, lathering, and manageability after rinsing.

[0102] (Evaluation results for Examples 3-7 and Comparative Example 6) Table 3 below shows the evaluation results for the hair cleansing compositions of Examples 3-7 and Comparative Example 6. The hair cleansing composition of Comparative Example 6 was used as the standard for each evaluation. Furthermore, the criteria for evaluating the feel of the hair after hair treatment included the hair cleansing composition of Comparative Example 6, as well as the hair cleansing compositions of Examples 3, 4, and 7. Additionally, the criteria for evaluating the ease of combing the hair after rinsing included the hair cleansing composition of Comparative Example 6, as well as the hair cleansing composition of Example 4.

[0103] [Table 3]

[0104] As shown in Table 3, the hair cleansing compositions of Examples 3 to 7, which have a mass ratio [AN / AM] (mass ratio of the amount of anionic surfactant to the amount of amphoteric surfactant) of 0.5 to 1.7, are superior to the hair cleansing composition of Comparative Example 6, which has a mass ratio [AN / AM] of 2.0, in terms of the evaluation of the texture of the hair after treatment. Therefore, it can be understood that setting the mass ratio [AN / AM] of the hair cleansing composition to 1.8 or less tends to result in superior evaluation of the texture of the hair after treatment.

[0105] Furthermore, Table 3 reveals the following [1] to [4].

[0106] [1] The hair cleansing compositions of Examples 3 and 5-7, which have a mass ratio [AN / AM] of 0.8 or more and 1.7 or less, are superior to the hair cleansing composition of Example 4, which has a mass ratio [AN / AM] of 0.5, in terms of the feel of the hair after treatment and the ease of combing after rinsing. Therefore, it can be understood that setting the mass ratio [AN / AM] of the hair cleansing composition in the range of 0.7 to 1.8 tends to result in superior evaluation of the feel of the hair after treatment and the ease of combing after rinsing.

[0107] [2] The hair washing compositions of Examples 3, 5, and 6, which have a mass ratio [AN / AM] of 0.8 or more and 1.4 or less, are superior to the hair washing compositions of Examples 4 and 7, which have a mass ratio [AN / AM] of 0.5 or 1.7 in terms of the feel of the hair after rinsing. Therefore, it can be understood that setting the mass ratio [AN / AM] of the hair cleansing composition in the range of 0.7 to 1.5 tends to result in a better evaluation of how easily the hair can be combed after rinsing.

[0108] [3] The hair cleansing compositions of Example 5 and Example 3, with mass ratios [AN / AM] of 0.8 and 1.1, respectively, are superior to the hair cleansing composition of Example 7, with a mass ratio [AN / AM] of 1.7, in terms of the feel of the hair after treatment. Therefore, it can be understood that setting the mass ratio [AN / AM] of the hair cleansing composition in the range of 0.7 to 1.2 tends to result in a superior evaluation of the texture of the hair after treatment.

[0109] [4] The hair cleansing composition of Example 5, having a mass ratio [AN / AM] of 0.8, is superior to the hair cleansing composition of Example 3, having a mass ratio [AN / AM] of 1.1, in terms of the feel of the hair after treatment. Therefore, it can be understood that setting the mass ratio [AN / AM] of the hair cleansing composition in the range of 0.7 or more and less than 1.1 tends to result in a superior evaluation of the texture of the hair after treatment.

[0110] (Evaluation results for Examples 3 and 8) Table 4 below shows the composition of each ingredient, along with the evaluation results of the hair cleansing compositions of Examples 1 and 6. The hair cleansing composition of Example 8 was used as the standard for each evaluation.

[0111] [Table 4]

[0112] As shown in Table 4, the hair cleansing composition of Example 3, which contains glyceryl monocaprate, a glycerin fatty acid monoester, is superior to the hair cleansing composition of Example 8, which contains coconut oil fatty acid N-methyl monoethanolamide, in terms of feel after hair treatment, lathering, and manageability after rinsing.

[0113] The following are examples of formulations for hair treatment compositions (rinse-off hair treatments) that can be used in the hair cleansing composition of this embodiment.

[0114] Hair treatment composition (rinse-off hair treatment) Stearyltrimethylammonium chloride 3% by mass Cetanol 3% by mass Stearyl alcohol 5% by mass Methylpolysiloxane 0.5% by mass Phenoxyethanol 0.5% by mass Purified water 88% by mass

Claims

1. (A), (B), and (C) below: (A) Acylmethyltaurine or its salt, (B) Polyoxyethylene alkyl ether carboxylic acid or a salt thereof, (C) Fatty acid amidopropyl betaine and / or alkyldimethylaminoacetic acid betaine, It is formulated with The mass ratio of the amount of anionic surfactant to the amount of amphoteric surfactant is 1.8 or less. Hair cleansing composition.

2. The hair cleansing composition according to claim 1, wherein the mass ratio of the amount of anionic surfactant to the amount of amphoteric surfactant is 0.5 or more.

3. (D) A hair cleansing composition according to claim 1 or 2, comprising a nonionic surfactant.

4. The (D) nonionic surfactant is a glycerin fatty acid monoester, The hair washing composition according to claim 3.

5. A hair cleansing composition according to any one of claims 1 to 4, wherein alkyl ether sulfate or a salt thereof is not included, or the amount of alkyl ether sulfate or a salt thereof included is 1% by mass or less.

6. A method for washing hair using the hair washing composition described in any one of claims 1 to 5.

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