Hair composition and hair treatment method

Abstract

To provide a hair composition that is excellent in preventing hair from separating when dry, and a hair treatment method using the hair composition. [Solution] The kinematic viscosity at 25°C is 10 mm 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 A compound comprising one or more hydrocarbon oils selected from those with a viscosity of less than 1 / s, a polymer having a cationic group, and hydroxyalkylcellulose, with a kinematic viscosity of 10 mm at 25°C. 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 A hair composition comprising a total amount of hydrocarbon oils with a viscosity of less than 1 / s of 1% by mass or more. A hair treatment method using the hair composition.

Description

[Technical Field]

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

[0002] Hair compositions containing various ingredients are provided to achieve the desired function.

[0003] As an example of a hair composition, Patent Document 1 discloses a hair treatment agent that is used in a leave-on manner, comprising (A) one or more selected from hyaluronic acid and its salts, (B) cationized cellulose, and (C) a hair styling polymer. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2017-109934 [Overview of the project] [Problems that the invention aims to solve]

[0005] In hair treatment using hair compositions, the hair composition is applied to wet hair, and then the hair is dried by a predetermined method (such as a hair dryer or natural drying) to finish the treatment. In such hair treatments, when the hair dries, the wet hairs can stick together and form clumps or tangles, making it difficult to separate the hair.

[0006] When drying hair, if the hair strands are difficult to separate, the drying process becomes more time-consuming and cumbersome, and the hair is more prone to damage from friction between strands. Also, when drying hair with heat such as a hairdryer, if the hair strands are difficult to separate during drying, it takes longer to dry, which increases the likelihood of heat damage to the hair.

[0007] Under such circumstances, there is a demand for a hair composition that is excellent in preventing hair from frizzing during drying.

[0008] In view of the above circumstances, an object of the present invention is to provide a hair composition that is excellent in preventing hair from frizzing during drying, and a hair treatment method using the hair composition.

Means for Solving the Problems

[0009] As a result of intensive studies by the present inventors, the hair composition contains at least one selected from silicone oils having a kinematic viscosity at 25°C of less than 10 mm 2 / s and hydrocarbon oils having a kinematic viscosity at 37.8°C of less than 20 mm 2 / s, a polymer having a cationic group, and hydroxyalkylcellulose. Furthermore, the total blending amount of the silicone oil having a kinematic viscosity at 25°C of less than 10 mm 2 / s and the hydrocarbon oil having a kinematic viscosity at 37.8°C of less than 20 mm 2 / s is 1% by mass or more, and based on the finding that it is excellent in preventing hair from frizzing during drying, the present invention has been completed.

[0010] The present invention includes the following inventions [1] to [7].

[0011] [1] The hair composition contains at least one selected from silicone oils having a kinematic viscosity at 25°C of less than 10 mm 2 / s and hydrocarbon oils having a kinematic viscosity at 37.8°C of less than 20 mm 2 / s, a polymer having a cationic group, and hydroxyalkylcellulose. The total blending amount of the silicone oil having a kinematic viscosity at 25°C of less than 10 mm 2 / s and the hydrocarbon oil having a kinematic viscosity at 37.8°C of less than 20 mm 2 / s is 1% by mass or more.

[0012] [2] The hair composition according to [1], wherein the silicone oil having a kinematic viscosity at 25°C of less than 10 mm 2 / s and the hydrocarbon oil having a kinematic viscosity at 37.8°C of less than 20 mm 2One or more hydrocarbon oils selected from those with a kinematic viscosity of less than 10 mm² at 25°C, wherein the kinematic viscosity at 25°C is at least 10 mm². 2 It contains silicone oil with a viscosity of less than / s.

[0013] The hair composition of [3] is the hair composition of [1] or [2], wherein the kinematic viscosity at 25°C is 10 mm 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 The total amount of hydrocarbon oils with a viscosity of less than / s is 5% by mass or more.

[0014] The hair composition [4] is one of the hair compositions selected from [1] to [3], wherein the polymer having the cationic group is a cationized polysaccharide.

[0015] The hair composition [5] is one of the hair compositions selected from [1] to [4], and contains a cationic surfactant and a higher alcohol, and is in the form of a cream.

[0016] The hair composition in [6] is one of the hair compositions selected from [1] to [5], and is used in a leave-on manner.

[0017] The hair treatment method in [7] is a hair treatment method using any of the hair compositions selected from [1] to [6]. [Effects of the Invention]

[0018] The hair composition according to the present invention provides a hair composition that is excellent in terms of how easily hair separates when dry. Furthermore, the hair treatment method according to the present invention provides a hair treatment method using a hair composition that is excellent in terms of how easily hair separates when dry. [Modes for carrying out the invention]

[0019] The present invention will be described below based on embodiments of the present invention.

[0020] <Hair composition> The hair composition of this embodiment has a kinematic viscosity of 10 mm at 25°C. 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 A compound containing one or more hydrocarbon oils with a viscosity of less than 1 / s, a polymer having a cationic group, and hydroxyalkylcellulose, with a kinematic viscosity of 10 mm at 25°C. 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 The total amount of hydrocarbon oils with a viscosity of less than / s is 1% by mass or more. The hair composition of this embodiment has superior ease of hair separation when dry compared to the above configuration.

[0021] Furthermore, in the following description, "kinematic viscosity at 25°C is 10 mm" 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 Hydrocarbon oils with a viscosity of less than / s are sometimes collectively referred to as (A), polymers containing cationic groups are sometimes referred to as (B), and hydroxyalkylcellulose is sometimes referred to as (C).

[0022] [(A): Kinematic viscosity at 25°C is 10 mm 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 [Hydrogen oils less than / s] The hair composition of this embodiment has a kinematic viscosity of 10 mm at 25°C. 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 It contains one or more hydrocarbon oils selected from those with a viscosity of less than / s, and has a kinematic viscosity of 10 mm at 25°C. 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 The total amount of hydrocarbon oils with a viscosity of less than / s is 1% by mass or more.

[0023] (Kinematic viscosity) The kinematic viscosity at 25°C is 10 mm 2For silicone oils with a viscosity of less than / s, "kinematic viscosity at 25°C" refers to the kinematic viscosity value at a measurement temperature of 25°C. The kinematic viscosity at 25°C can be measured in accordance with the 2021 Quasi-drug Raw Materials Standards, General Test Methods, Viscosity Measurement Method 1.

[0024] The kinematic viscosity at 37.8°C is 20 mm². 2 For hydrocarbon oils with a viscosity of less than 1 / s, "kinematic viscosity at 37.8°C" refers to the kinematic viscosity value at a measurement temperature of 37.8°C. The kinematic viscosity at 37.8°C can be measured using a viscometer such as a Cannon-Fenske viscometer or an Ubbelohde viscometer, according to the method described in JIS Z8803:2011.

[0025] The hair composition of this embodiment has a kinematic viscosity of 10 mm at 25°C as (A). 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 It may also contain any hydrocarbon oil with a kinematic viscosity of less than / s, and the kinematic viscosity at 25°C is 10 mm 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C 2 It may also be formulated in combination with hydrocarbon oils with a viscosity of less than / s.

[0026] The hair composition of this embodiment has a kinematic viscosity of 10 mm at 25°C as (A). 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 Of the hydrocarbon oils with a viscosity of less than / s, those that are liquid at 25°C can be used. The above "liquid at 25°C" means that it exhibits fluidity at 25°C.

[0027] The hair composition of this embodiment, from the viewpoint of excellent finished hair manageability, has (A) a kinematic viscosity at 25°C of at least 10 mm². 2 A silicone oil with a concentration of less than 1 / s is preferred. "Finished hair" refers to hair that has been treated with the hair composition of this embodiment and is in a dried state.

[0028] (Kinematic viscosity at 25°C is 10 mm 2 (Silicone oil less than / s) The hair composition of this embodiment has a kinematic viscosity of 10 mm at 25°C as (A). 2 This product contains one or more types of silicone oil with a viscosity of less than / s.

[0029] The kinematic viscosity at 25°C is 10 mm 2 For example, a silicone oil with a kinematic viscosity of less than 1 / s has a kinematic viscosity of 9 mm at 25°C. 2 A silicone oil with a viscosity of 6 mm² or less may be used, and from the viewpoint of improving the ease with which hair separates when dry, a kinematic viscosity of 6 mm² at 25°C is preferred. 2 A silicone oil with a kinematic viscosity of 5 mmHg or less at 25°C is preferred. 2 Silicone oils with a kinematic viscosity of 3 mmHg or less are more preferable, and a kinematic viscosity of 3 mmHg at 25°C is preferred. 2 Silicone oils with a kinematic viscosity of 2 mm² or less are even more preferred, and a kinematic viscosity of 2 mm² at 25°C is also preferred. 2 Silicone oils with a viscosity of / s or less are even more preferable.

[0030] The kinematic viscosity at 25°C is 10 mm 2 For example, a silicone oil with a kinematic viscosity of less than / s has a kinematic viscosity of 10 mm at 25°C. 2 Linear silicone oils with a kinematic viscosity of less than 10 mm² / s (e.g., octamethyltrisiloxane, ethyl methicone, caprylyl methicone), with a kinematic viscosity of 10 mm² at 25°C. 2 Branched silicone oil (such as methyl trimethicone) with a kinematic viscosity of less than 10 mmHg at 25°C. 2 Examples include cyclic silicone oils with a viscosity of less than / s (such as octamethylcyclotetrasiloxane).

[0031] The kinematic viscosity at 25°C is 10 mm 2 For linear silicone oils with a kinematic viscosity of less than / s, the kinematic viscosity at 25°C is 10 mm². 2 Linear dimethylpolysiloxane with a kinematic viscosity of less than 10 mm² / s. 2 Examples include linear alkyl-modified silicones with a viscosity of less than / s.

[0032] The kinematic viscosity is 10 mm 2For linear silicone oils with a kinematic viscosity of less than 10 mmHg, the ingredient names used in cosmetics include, for example, disiloxane, hexamethyldisiloxane, trisiloxane, and dimethicone (provided that the kinematic viscosity at 25°C is 10 mmHg). 2 Examples include those with a fission rating of less than / s, ethyl methicone, ethyl trisiloxane, and caprylyl methicone.

[0033] The kinematic viscosity at 25°C is 10 mm 2 For branched silicone oils with a viscosity of less than / s, an example of a cosmetic ingredient name is methyl trimethicone.

[0034] The kinematic viscosity at 25°C is 10 mm 2 Examples of cosmetic ingredient names for cyclic silicone oils with a viscosity of less than 1 / s include cyclotrisiloxane, cyclotetrasiloxane, cyclopentasiloxane, cyclohexasiloxane, and cyclomethicone.

[0035] (Kinematic viscosity at 37.8℃ is 20mm 2 (Hydroxide oils less than / s) The hair composition of this embodiment has a kinematic viscosity of 20 mm at 37.8°C as (A). 2 This product contains one or more hydrocarbon oils with a viscosity of less than / s.

[0036] The hair composition of this embodiment has a kinematic viscosity of 20 mm at 37.8°C. 2 For hydrocarbon oils with a kinematic viscosity of less than / s, for example, one with a kinematic viscosity of 18 mm at 37.8°C. 2 Hydrocarbon oils with a kinematic viscosity of 10 mm² or less may be used, and from the viewpoint of improving the ease with which hair separates during drying, a kinematic viscosity of 10 mm² at 37.8°C is preferred. 2 Hydrocarbon oils with a kinematic viscosity of 8 mm² or less are preferred, and the kinematic viscosity at 37.8°C is 8 mm². 2 Hydrocarbon oils with a kinematic viscosity of 5 mm² or less are more preferred, and a kinematic viscosity of 5 mm² at 37.8°C is preferred. 2 Hydrocarbon oils with a kinematic viscosity of 3 mm² or less are more preferable, and a kinematic viscosity of 3 mm² at 37.8°C is also preferred. 2 Hydrocarbon oils with a viscosity of / s or less are even more preferable.

[0037] The kinematic viscosity at 37.8°C is 20 mm 2 For example, a hydrocarbon oil with a kinematic viscosity of less than / s has a kinematic viscosity of 20 mm at 37.8°C. 2 Branched hydrocarbon oil with a kinematic viscosity of less than 1 / s and a kinematic viscosity of 20 mmHg at 37.8°C. 2 Examples include linear hydrocarbon oils with a seismic intensity of less than / s.

[0038] The kinematic viscosity at 37.8°C is 20 mm 2 For example, a branched hydrocarbon oil with a kinematic viscosity of less than / s has a kinematic viscosity of 20 mm at 37.8°C. 2 Isoparaffins with a viscosity of less than 20 mm² / s, light isoparaffins, and light liquid isoparaffins with a kinematic viscosity of 20 mm² at 37.8°C. 2 Liquid isoparaffin with a kinematic viscosity of less than 20 mmHg at 37.8°C. 2 Liquid polyisobutylene with a kinematic viscosity of less than 20 mmHg at 37.8°C. 2 Examples include isoalkanes with a fission ratio of less than / s.

[0039] The kinematic viscosity at 37.8°C is 20 mm². 2 For branched hydrocarbon oils with a kinematic viscosity of less than 20 mmHg, examples of ingredient names used in cosmetics include isododecane, isohexadecane, and hydrogenated polyisobutene (provided the kinematic viscosity at 37.8°C is 20 mmHg). 2 Examples include those with a fission ratio of less than / s, (C9-16) isoalkanes, (C11-13) isoalkanes, (C13,14) isoalkanes, and (C13-16) isoalkanes.

[0040] The kinematic viscosity at 37.8°C is 20 mm 2 For example, a linear hydrocarbon oil with a kinematic viscosity of less than 20 mm² at 37.8°C is a linear hydrocarbon oil. 2 Examples include straight-chain alkanes with a kinematic viscosity of less than 20 mm² / s (for example, straight-chain alkanes with 6 to 21 carbon atoms, or 6 to 17 carbon atoms). Also, a kinematic viscosity at 37.8°C of 20 mm² / s is included. 2Examples of ingredient names for linear hydrocarbon oils with a fraction of less than 1 / s in cosmetics include undecane, dodecane, undecane, dodecane, tridecane, tetradecane, hexadecane, (C9-12)alkane, C(C10-13)alkane, (C13,14)alkane, (C13-15)alkane, (C14-20)alkane, (C15-19)alkane, and (C18-21)alkane.

[0041] (Kinematic viscosity at 25°C is 10 mm 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 (Total amount of hydrocarbon oils less than / s) The hair composition of this embodiment has a kinematic viscosity of 10 mm at 25°C. 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C. 2 The total amount of hydrocarbon oil with a kinematic viscosity of less than 1 / s (hereinafter sometimes referred to as "total amount of (A)") is 1% by mass or more. Here, the total amount of (A) is defined as (A) having a kinematic viscosity of 10 mm at 25°C. 2 If only silicone oil with a viscosity of less than / s is included, or if the kinematic viscosity at 37.8°C is 20 mmHg 2 When only hydrocarbon oils with a kinematic viscosity of less than / s are blended, the blending amount for each case is given, and the kinematic viscosity at 25°C is 10 mm 2 Silicone oil with a kinematic viscosity of less than / s and a kinematic viscosity of 20 mm at 37.8°C 2 If both hydrocarbon oils with a concentration of less than / s are included, the total amount of both is used. The hair composition of this embodiment has excellent ease of hair separation when dry, by ensuring that the total amount of (A) is 1% by mass or more.

[0042] The total amount of (A) in the hair composition of this embodiment is 1% by mass or more, but from the viewpoint of excellent smoothness of the finished hair, 2% by mass or more is preferred, 3% by mass or more is more preferred, 5% by mass or more is even more preferred, and 10% by mass or more is even more preferred.

[0043] The total amount of (A) in the hair composition of this embodiment is, for example, 95% by mass or less. If the hair composition of this embodiment is in the form of a cream, the total amount of (A) is, for example, 50% by mass or less, but from the viewpoint of further improving emulsification stability, 40% by mass or less is preferred, 30% by mass or less is more preferred, and 20% by mass or less is even more preferred.

[0044] The total amount of (A) in the hair composition of this embodiment is, for example, 1% by mass or more and 95% by mass or less, but from the viewpoint of excellent smoothness of the finished hair, 2% by mass or more and 95% by mass or less is preferred, 3% by mass or more and 95% by mass or less is more preferred, 5% by mass or more and 95% by mass or less is even more preferred, and 10% by mass or more and 95% by mass or less is even more preferred. If the hair composition of this embodiment is in the form of a cream, the total amount of (A) is, for example, 1% by mass or more and 50% by mass or less, but from the viewpoint of having excellent smoothness of the finished hair while further improving emulsification stability, 2% by mass or more and 40% by mass or less is preferred, 3% by mass or more and 30% by mass or less is more preferred, 5% by mass or more and 20% by mass or less is even more preferred, and 10% by mass or more and 20% by mass or less is even more preferred.

[0045] [(B): Polymers containing cationic groups] The hair composition of this embodiment is formulated with one or more types of polymers ((B)) having cationic groups. A polymer having cationic groups is a polymer having a cationic substituent, and such substituents include amino groups and ammonium groups.

[0046] Examples of (B) include cationic polymers and amphoteric polymers. Examples of cationic polymers include cationic polymers containing structural units derived from cationized polysaccharides or cationic monomers. Examples of amphoteric polymers include amphoteric polymers containing structural units derived from anionic monomers and structural units derived from cationic monomers.

[0047] Examples of cationic monomers in cationic polymers containing structural units derived from cationic monomers include dimethyldiallylammonium chloride, diethyldiallylammonium chloride, (meth)acrylamidopropyltrimethylammonium chloride, dimethylaminoethyl(meth)acrylate diethyl sulfate, 2-((meth)acryloyloxy)ethyltrimethylammonium chloride, (meth)acrylamidopropyltrimethylammonium chloride, ethyltrimethylammonium chloride, and (meth)acrylamidopropyllauryldimonium chloride. Here, (meth)acrylamide means either acrylamide, methacrylamide, or a mixture of acrylamide and methacrylamide. (Meth)acrylic acid means either acrylic acid, methacrylic acid, or a mixture of acrylic acid and methacrylic acid. (Meth)acryloyl means either containing an acryloyl group, containing a methacryloyl group, or containing both a methacryloyl group and a methacryloyl group.

[0048] Examples of structural units derived from anionic monomers included in amphoteric polymers include structural units derived from acrylic acid.

[0049] In this embodiment, from the viewpoint of providing excellent smoothness to the finished hair, it is preferable that the hair composition contains a cationized polysaccharide as (B).

[0050] (Cationized polysaccharides) Examples of cationized polysaccharides include cationized guar gum (guar hydroxypropyltrimonium chloride, hydroxypropyl guar hydroxypropyltrimonium chloride, etc.), cationized cellulose (hydroxyethylcellulose dimethyldiallylammonium chloride, O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose chloride, etc.), cationized locust bean gum, cationized cassia, cationized xanthan gum, cationized tamarind gum, cationized fenugreek gum, cationized tara gum, and cationized starch. Of the cationized polysaccharides, cationized guar gum is preferred from the viewpoint of providing excellent manageability of the finished hair.

[0051] Examples of cosmetic ingredient names for the aforementioned cationized polysaccharides include hydroxypropyl guar hydroxypropyltrimonium chloride, guar hydroxypropyltrimonium chloride, polyquaternium-4, polyquaternium-10, polyquaternium-24, hydroxypropyl cellulose hydroxypropyltrimonium chloride, PG-hydroxyethyl cellulose stearyldimonium chloride, PG-hydroxyethyl cellulose cocodimonium chloride locust bean hydroxypropyltrimonium chloride, tamarind hydroxypropyltrimonium chloride, xanthan hydroxypropyltrimonium chloride, cassia hydroxypropyltrimonium chloride, cationized starch-2, hydroxypropyltrimonium chloride starch, and caesalpinia spinosa hydroxypropyltrimonium chloride.

[0052] (Cationic polymers containing structural units derived from cationic monomers) Examples of cationic polymers containing structural units derived from cationic monomers include polydimethylmethylenepiperidinium chloride, dimethyldiallylammonium chloride / acrylamide copolymer, vinylpyrrolidone / methylvinylimidazolium copolymer, ethyl[(methacryloyloxy)ethyl]dimethylammonium ethyl sulfate / N,N-dimethylacrylamide / polyethylene glycol dimethacrylate copolymer, N,N-dimethylaminoethyl methacrylate diethyl sulfate / N,N-dimethylacrylamide / polyethylene glycol dimethacrylate copolymer, vinylpyrrolidone / N,N-dimethylaminoethyl methacrylate copolymer, vinylpyrrolidone / methacrylamidopropyl trimethylammonium chloride copolymer, vinylpyrrolidone / quaternized dimethylaminoethyl methacrylate copolymer, vinylpyrrolidone / alkylaminoacrylate / vinylcaprolactam copolymer, vinylpyrrolidone / alkylaminoacrylate copolymer, alkylacrylamide / acrylate / alkylaminoalkylacrylamide / polyethylene glycol methacrylate copolymer, and vinylimidazolium trichloride / vinylpyrrolidone copolymer.

[0053] Examples of cationic polymers containing cationic monomer-derived structural units that can be used as cosmetic ingredient names include polyquaternium-1, polyquaternium-2, polyquaternium-6, polyquaternium-7, polyquaternium-11, polyquaternium-16, polyquaternium-28, polyquaternium-32, polyquaternium-33, polyquaternium-37, polyquaternium-44, polyquaternium-46, polyquaternium-52, polyquaternium-55, polyquaternium-59, polyquaternium-67, polyquaternium-68, polyquaternium-69, polyquaternium-71, polyquaternium-88, (adipate / dimethylaminohydroxypropyldiethylenetriamine) copolymer, and polyacrylamidepropyltrimonium chloride.

[0054] (Amphoteric polymer) Examples of amphoteric polymers include dimethyldiallylammonium chloride-acrylic acid copolymers and acrylamide-acrylic acid-dimethyldiallylammonium chloride copolymers.

[0055] Examples of amphoteric polymers used as ingredient names in cosmetics include polyquaternium-22, polyquaternium-39, polyquaternium-47, and polyquaternium-53.

[0056] For (B), for example, a polymer having a cationic group can be used if its viscosity in a 1% by mass aqueous solution is between 10 mPa·s and 10,000 mPa·s. The viscosity mentioned above refers to the value measured at 25°C for 60 seconds using a B-type viscometer with a rotor selected according to the viscosity. The rotor rotation speed during measurement can be set as appropriate, for example, 6 rpm, 12 rpm, or 30 rpm.

[0057] The amount of (B) in the hair composition of this embodiment can be set as appropriate.

[0058] The amount of (B) in the hair composition of this embodiment is, for example, 0.01% by mass or more, but from the viewpoint of excellent smoothness of the finished hair, 0.02% by mass or more is preferred, 0.05% by mass or more is more preferred, 0.08% by mass or more is even more preferred, and 0.1% by mass or more is even more preferred.

[0059] The amount of (B) in the hair composition of this embodiment is, for example, 3% by mass or less, but from the viewpoint of improving the ease with which the hair separates when dry, 1% by mass or less is preferred, and 0.5% by mass or less is more preferred.

[0060] The amount of (B) in the hair composition of this embodiment is, for example, 0.01% by mass or more and 3% by mass or less, but from the above viewpoint, 0.02% by mass or more and 1% by mass or less is preferred, 0.05% by mass or more and 0.5% by mass or less is more preferred, 0.08% by mass or more and 0.5% by mass or less is even more preferred, and 0.1% by mass or more and 0.5% by mass or less is even more preferred.

[0061] [(C): Hydroxyalkylcellulose] The hair composition of this embodiment contains one or more types of hydroxyalkylcellulose ((C)).

[0062] (C) may be, for example, water-soluble hydroxyalkylcellulose. The water-soluble hydroxyalkylcellulose refers to hydroxyalkylcellulose that dissolves in 100g of water at 25°C in an amount of 0.1g or more. The above dissolution can be confirmed by adding hydroxyalkylcellulose to water, dissolving it, and then checking the amount dissolved at 25°C. Alternatively, hydroxyalkylcellulose may be added to heated water, dissolved, and then the amount dissolved at 25°C may be checked.

[0063] Examples of (C) include hydroxyalkyl ethers of cellulose and alkylcellulose alkylene glycol ethers. Examples of hydroxyalkyl ethers in the above hydroxyalkyl ethers of cellulose include hydroxymethyl ether, hydroxyethyl ether, and hydroxypropyl ether. Examples of alkylcellulose in the above alkylcellulose alkylene glycol ethers include methylcellulose and ethylcellulose, and examples of alkylene glycol ethers include ethylene glycol ether and propylene glycol ether.

[0064] Examples of ingredient names for cosmetics in (C) include hydroxyethylcellulose, hydroxypropylcellulose, hydroxyethylethylcellulose, and hydroxypropylmethylcellulose.

[0065] For (C), for example, a hydroxyalkylcellulose aqueous solution with a viscosity of 50 mPa·s or more and 8000 mPa·s or less can be used. The above viscosity refers to the value measured at 25°C for 60 seconds using a B-type viscometer with a rotor selected according to the viscosity. The rotor rotation speed during measurement can be set as appropriate, for example, 6 rpm, 12 rpm, or 30 rpm.

[0066] The amount of (C) in the hair composition of this embodiment can be set as appropriate.

[0067] In the hair composition of this embodiment, if (C) is included, the amount included is not particularly limited and may be set as appropriate.

[0068] The amount of (C) in the hair composition of this embodiment is, for example, 0.01% by mass or more, but from the viewpoint of excellent smoothness of the finished hair, 0.02% by mass or more is preferred, 0.05% by mass or more is more preferred, 0.08% by mass or more is even more preferred, and 0.1% by mass or more is even more preferred.

[0069] The amount of (C) in the hair composition of this embodiment is, for example, 3% by mass or less, but from the viewpoint of ease of application, 1% by mass or less is preferred, and 0.5% by mass or less is more preferred.

[0070] The amount of (C) in the hair composition of this embodiment is, for example, 0.01% by mass or more and 3% by mass or less, but from the above viewpoint, 0.02% by mass or more and 1% by mass or less is preferred, 0.05% by mass or more and 0.5% by mass or less is more preferred, 0.08% by mass or more and 0.5% by mass or less is even more preferred, and 0.1% by mass or more and 0.5% by mass or less is even more preferred.

[0071] (The mass ratio of the total amount of (A) to the amount of (B)) The mass ratio of the total amount of (A) to the amount of (B) in the hair composition of this embodiment ([(Total amount of (A)) / (Amount of (B)] ratio) can be set as appropriate, for example, 1 to 1000. In addition, from the viewpoint of improving the ease with which hair separates when dry, the above mass ratio in the hair composition of this embodiment is preferably 3 to 500, more preferably 15 to 300, and even more preferably 50 to 200.

[0072] (The mass ratio of the total amount of (A) to the amount of (C)) The mass ratio of the total amount of (A) to the amount of (C) in the hair composition of this embodiment ([(Total amount of (A)) / (Amount of (C)] ratio) can be set as appropriate, for example, 1 to 1000. In addition, from the viewpoint of achieving better hair separation when dry, the above mass ratio in the hair composition of this embodiment is preferably 3 to 500, more preferably 15 to 300, and even more preferably 50 to 200.

[0073] (The mass ratio of the amount of (B) to the amount of (C)) The mass ratio of the amount of (B) to the amount of (C) in the hair composition of this embodiment ([((B) amount) / ((C) amount)] ratio) can be set as appropriate, for example, 0.1 or more and 100 or less.

[0074] [Optional ingredients] The hair composition of this embodiment may optionally contain components other than (A), (B), and (C) (hereinafter referred to as "optional components"). The optional components can be known components used in hair compositions, and examples include cationic surfactants (hereinafter sometimes referred to as (D)), amphoteric surfactants, anionic surfactants, nonionic surfactants, higher alcohols (hereinafter sometimes referred to as (E)), lower alcohols, polyhydric alcohols, sugars, ester oils, fats and oils, fatty acids, hydrocarbons, waxes, silicones, polymer compounds, amino acids, proteins, plant and animal extracts, microbial-derived products, inorganic compounds, fragrances, preservatives, metal ion chelating agents, ultraviolet absorbers, and water (hereinafter sometimes referred to as (F)).

[0075] ((D): Cationic surfactant) The hair composition of this embodiment is preferably formulated with one or more cationic surfactants ((D)) from the viewpoint of making the hair feel softer. The (D) incorporated into the hair composition of this embodiment may be a cationic surfactant having a hydrocarbon group with 8 to 28 carbon atoms.

[0076] Examples of (D) incorporated into the hair composition of this embodiment include mono-long-chain alkyltrimethylammonium salts, di-long-chain alkyldimethylammonium salts, tri-long-chain alkylmonomethylammonium salts, benzalkonium-type quaternary ammonium salts, mono-alkylether-type quaternary ammonium salts, mono-alkylamide-type quaternary ammonium salts, fatty acid ester amine salts, fatty acid amide amine salts, and urea-condensed amine salt-type tertiary amine salts (Arcobel-type tertiary amine salts). Note that the above "long-chain alkyl" may be an alkyl group having 12 to 28 carbon atoms.

[0077] As (D) to be incorporated into the hair composition of this embodiment, monolong-chain alkyltrimethylammonium salts are preferred from the viewpoint of providing excellent smoothness to the finished hair.

[0078] Examples of the mono-long-chain alkyltrimethylammonium salts include lauryltrimethylammonium salt, cetyltrimethylammonium salt, stearyltrimethylammonium salt, and behenyltrimethylammonium salt.

[0079] Examples of cosmetic ingredient names for the aforementioned mono-long-chain alkyltrimethylammonium salts include lauryltrimonium chloride, lauryltrimonium bromide, myrtrimonium bromide, cocotrimonium chloride, cocotrimonium methosulfate, cetrimonium chloride, cetrimonium bromide, cetrimonium methosulfate, cetrimonium saccharin, steartrimonium chloride, steartrimonium bromide, steartrimonium methosulfate, stearyltrimonium saccharin, ceteartrimonium chloride, behentrimonium chloride, behentrimonium methosulfate, alkyl(C16,18)trimonium chloride, alkyl(C28)trimonium chloride, octacosatrimonium chloride, and soytrimonium chloride.

[0080] When a di-long-chain alkyldimethylammonium salt is incorporated as (D), examples of such ammonium salts include dicetyldimethylammonium chloride, distearyldimethylammonium chloride, and dialkyl(C12-18)dimethylammonium chloride.

[0081] (D) When a fatty acid amidoamine is included, examples of such fatty acid amidoamines include dimethylaminopropyl palmitate, dimethylaminopropyl stearate (cosmetic ingredient name: stearamidopropyldimethylamine), and dimethylaminopropyl behenate (cosmetic ingredient name: behenamidopropyldimethylamine).

[0082] In the hair composition of this embodiment, if (D) is included, the amount included is not particularly limited and may be set as appropriate.

[0083] The amount of (D) in the hair composition of this embodiment is, for example, 0.1% by mass or more, but from the viewpoint of excellent manageability of the finished hair, 0.3% by mass or more is preferred, 0.4% by mass or more is more preferred, 0.5% by mass or more is even more preferred, and 0.7% by mass or more is even more preferred.

[0084] The amount of (D) in the hair composition of this embodiment is, for example, 10% by mass or less, but from the viewpoint of further reducing skin irritation, 5% by mass or less is preferred, 4% by mass or less is more preferred, and 3% by mass or less is even more preferred.

[0085] The range of the amount of (D) in the hair composition of this embodiment is, for example, 0.1% by mass or more and 10% by mass or less, but from the above viewpoint, 0.3% by mass or more and 5% by mass or less is preferred, 0.4% by mass or more and 4% by mass or less is more preferred, 0.5% by mass or more and 3% by mass or less is even more preferred, and 0.7% by mass or more and 3% by mass or less is even more preferred.

[0086] ((E): Higher alcohols) In this embodiment, the hair composition is preferably formulated with one or more higher alcohols ((E)) from the viewpoint of ease of application.

[0087] As (E) incorporated into the hair composition of this embodiment, for example, a monohydric alcohol having 12 to 22 carbon atoms can be used, such as linear higher alcohols (e.g., myristyl alcohol, cetanol, oleyl alcohol, stearyl alcohol, behenyl alcohol, etc.) and branched higher alcohols (e.g., hexyldecanol, isocetyl alcohol, isostearyl alcohol, octyldodecanol, decyltetradecanol, etc.).

[0088] In the hair composition of this embodiment, if (E) is included, the amount included is not particularly limited and may be set as appropriate.

[0089] The amount of (E) in the hair composition of this embodiment is, for example, 0.5% by mass or more. If the hair composition of this embodiment is in a cream form, from the viewpoint of further improving emulsification stability, 1% by mass or more is preferable, 2% by mass or more is more preferable, 3% by mass or more is even more preferable, and 4% by mass or more is even more preferable.

[0090] The amount of (E) in the hair composition of this embodiment is, for example, 15% by mass or less, but from the viewpoint of improving the ease with which the hair separates when dry, 12% by mass or less is preferred, and 10% by mass or less is more preferred.

[0091] The amount of (E) in the hair composition of this embodiment is, for example, 0.5% by mass or more and 15% by mass or less, but from the viewpoint of improving the ease with which hair separates when dry, 0.5% by mass or more and 12% by mass or less is preferred, 0.5% by mass or more and 10% by mass or less is more preferred, 0.5% by mass or more and 10% by mass or less is even more preferred, and 0.5% by mass or more and 10% by mass or less is even more preferred. If the hair composition of this embodiment is in the form of a cream, the amount of (E) is preferably 1% by mass or more and 12% by mass or less, more preferably 2% by mass or more and 10% by mass or less, more preferably 3% by mass or more and 10% by mass or less, and even more preferably 4% by mass or more and 10% by mass or less, from the viewpoint of improving the ease with which hair separates when dry while further improving emulsion stability.

[0092] ((F):Wed) The hair composition of this embodiment is preferably one that contains water ((F)) from the viewpoint of facilitating the blending of (A), (B), and (C). The amount of water is not particularly limited and can be set as appropriate.

[0093] The amount of (F) in the hair composition of this embodiment is, for example, 30% by mass or more. If the hair composition of this embodiment is in the form of a cream, the amount of (F) is preferably 40% by mass or more, more preferably 50% by mass or more, and even more preferably 60% by mass or more, from the viewpoint of further improving emulsification stability.

[0094] The amount of (F) in the hair composition of this embodiment is, for example, 99% by mass or less. If the hair composition of this embodiment is in a cream form, the amount of (F) is preferably 95% by mass or less, and more preferably 90% by mass or less, from the viewpoint of further improving emulsification stability.

[0095] The range of the amount of (F) in the hair composition of this embodiment is, for example, 30% by mass or more, 15% by mass or less, and 99% by mass or less. If the hair composition of this embodiment is in the form of a cream, the range of the amount of (F) is preferably 40% by mass or more and 95% by mass or less, more preferably 50% by mass or more and 90% by mass or less, and even more preferably 60% by mass or more and 90% by mass or less, from the viewpoint of further improving emulsification stability.

[0096] The hair composition of this embodiment is preferably formulated in a cream form, containing a cationic surfactant and a higher alcohol, from the viewpoint of being easy to apply and making the hair feel softer.

[0097] [Issue] The pH of the hair composition of this embodiment at 25°C can be set as appropriate, for example, between 3 and 9. The above pH value is obtained by measuring the hair composition of this embodiment at 25°C using a known pH meter. If the above measurement is difficult depending on the dosage form and amount of water used in the hair composition of this embodiment, the hair composition of this embodiment may be appropriately diluted with purified water (for example, 20-fold dilution), and the diluted solution at 25°C may be measured using a known pH meter.

[0098] 〔viscosity〕 The viscosity of the hair composition in this embodiment is not particularly limited and may be set as appropriate. For example, the viscosity of the hair composition in this embodiment is 1000 mPa·s or more and 30000 mPa·s or less. Here, the viscosity of the hair composition in this embodiment is adopted as the value after 60 seconds measured at 25°C using a B-type viscometer with a rotor selected according to the viscosity. The rotor rotation speed during measurement may be, for example, 6 rpm, 12 rpm, or 30 rpm.

[0099] [Dosage form] The dosage form of the hair composition of this embodiment is not particularly limited and can be liquid, cream, gel, solid, paste, foam, or mist. From the viewpoint of ease of application, a cream dosage form is preferred for the hair composition of this embodiment.

[0100] The hair composition of this embodiment may also be an emulsion composition. Examples of emulsion compositions include oil-in-water emulsions, water-in-oil emulsions, and water-in-oil emulsions.

[0101] [Manufacturing method] The method for producing the hair composition of this embodiment can be any known method for producing a hair composition, depending on the dosage form used. For example, one method involves mixing (A), (B), and (C) in predetermined proportions such that the total amount of (A) is 1% by mass or more, using a conventional method. In this method, a solvent (such as water) may be used as needed.

[0102] [How to use] The hair composition of this embodiment may be used in the same way as known hair compositions. For example, the hair may be treated with the hair composition of this embodiment after wetting the hair with water, and then dried either without rinsing or after rinsing.

[0103] The hair composition of this embodiment is preferably used in a leave-in application manner, from the viewpoint of providing superior manageability of the finished hair.

[0104] (Application) The hair composition of this embodiment is used on hair, but it may also be used on wet hair, for example.

[0105] The hair composition of this embodiment can be used for, for example, hair care purposes (e.g., shampoo, hair treatment, styling hair treatment, a component of a multi-component hair treatment), hair styling purposes, hair coloring purposes, hair bleaching purposes, perming purposes, and hair growth purposes. The hair treatment may be a leave-in hair treatment or a rinse-off hair treatment.

[0106] The hair composition of this embodiment is preferable to be used as a leave-in hair treatment, as it provides superior manageability after application. Examples of leave-in hair treatment product forms include hair cream, hair milk, hair oil, and leave-in treatment.

[0107] <Hair Treatment Methods> The hair treatment method of this embodiment is a method of treating hair using the hair composition of this embodiment described above.

[0108] As for the hair treatment method of this embodiment, in addition to using the hair composition of this embodiment, any known hair treatment method may be employed. Therefore, the method of using the hair composition of this embodiment described above may also be used. [Examples]

[0109] 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.

[0110] (Manufacturing of hair compositions for Examples 1-15 and Comparative Examples 1-10) Using the following ingredients, each ingredient was mixed by a conventional method so as to have the compositions shown in Tables 1 to 7, and hair compositions of Examples 1 to 15 and Comparative Examples 1 to 10 were produced respectively. The hair compositions of Examples 1 to 15 and Comparative Examples 1 to 10 were cream oil-in-water emulsion compositions. In addition, the numerical values in the ingredient columns of Tables 1 to 7 are in mass%, and the notation of "-" indicates that the ingredient was not blended. Further, the value of the kinematic viscosity at 25°C is indicated at the end of the linear dimethylpolysiloxane used, and the value of the kinematic viscosity at 37.8°C is indicated at the end of isododecane and hydrogenated polyisobutene respectively.

[0111] (Ingredients) Linear dimethylpolysiloxane (kinematic viscosity at 25°C 1.5 mm 2 / s), linear dimethylpolysiloxane (kinematic viscosity at 25°C 2 mm 2 / s), linear dimethylpolysiloxane (kinematic viscosity at 25°C 5 mm 2 / s), isododecane (kinematic viscosity at 37.8°C 1.35 mm 2 / s), hydrogenated polyisobutene (kinematic viscosity at 37.8°C 3.1 mm 2 / s), linear dimethylpolysiloxane (kinematic viscosity at 25°C 10 mm 2 / s), linear dimethylpolysiloxane (kinematic viscosity at 25°C 50 mm 2 / s), hydrogenated polyisobutene (kinematic viscosity at 37.8°C 20.1 mm 2 / s), O-[2-hydroxy-3-(trimethylammonio)propyl] guar gum chloride, O-[2-hydroxy-3-(trimethylammonio)propyl] hydroxyethyl cellulose chloride, polychlorodimethyldimethylenepyrrolidinium, vinylpyrrolidone·N,N-dimethylaminoethyl methacrylate copolymer diethyl sulfate, dimethyldiallylammonium chloride·acrylic acid copolymer, hydroxyethyl cellulose, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, behenyltrimethylammonium methyl sulfate, distearyldimethylammonium chloride, cetanol, stearyl alcohol, alkyl benzoate (C12-15), isopropanol, phenoxyethanol, fragrance, purified water

[0112] (Sensory evaluation) The hair compositions of Examples 1-15 and Comparative Examples 1-10, prepared as described above, were used for the following hair treatments and sensory evaluations.

[0113] Multiple hair bundles (each bundle consisting of human hair approximately 20 cm long, weighing approximately 5 g) were created using black hair collected from the same Japanese woman. The created hair bundles were rinsed with water, washed with shampoo (Milbon's "Grand Linkage Willow Luxe Shampoo"), rinsed with water, and towel-dried. Next, 0.4 g of the hair composition of Examples 1-15 and Comparative Examples 1-10 was taken by hand and applied to each hair bundle. The "ease of application" was evaluated during this application process. Then, the hair bundles to which each example and comparative example had been applied were dried using a hairdryer without rinsing. The "ease of hair separation during drying" was evaluated when the hair was run through during drying. Furthermore, the "smoothness of the finished hair," "non-stickiness of the finished hair," and "manageability of the finished hair" were sensory evaluated when the hair bundles were touched after drying. The sensory evaluation was conducted by five evaluators who routinely evaluate hair compositions.

[0114] For each of the evaluation items listed above—"ease of application," "ease of hair separation when dry," "smoothness of finished hair," "non-stickiness of finished hair," and "manageability of finished hair"—each evaluator assigned scores based on the following criteria, using the evaluation of the hair bundle when using the hair composition of Comparative Example 5 as the baseline (3 points). Then, the average score of all evaluators was calculated for each evaluation item.

[0115] (Evaluation criterion: Ease of application) 5 points: Much easier to apply to wet hair than the standard (compared to the standard, the hair composition spreads very easily when applied to wet hair, making it very easy to apply to the entire hair). 4 points: Slightly better than the standard in terms of ease of application to wet hair (compared to the standard, the hair composition spreads slightly more easily when applied to wet hair, making it slightly easier to apply to the entire hair). 3 points: Ease of application to wet hair is comparable to the standard (when applied to wet hair, the hair composition spreads as easily as the standard). Points 2: Slightly inferior to the standard in terms of ease of application to wet hair (compared to the standard, the hair composition is slightly less spreadable and slightly more difficult to apply to the entire hair when applied to wet hair). 1 point: It is far inferior to the standard in terms of ease of application to wet hair (compared to the standard, when applied to wet hair, the hair composition is very difficult to spread and very difficult to apply to the entire hair).

[0116] (Evaluation criterion: How easily hair separates when dry) 5 points: It is far superior to the standard in terms of how easily hair separates when dry (compared to the standard, when drying wet hair with a hairdryer while running your fingers through it, the wet hairs do not stick together or form clumps as easily, so the hair separates very easily). 4 points: Slightly better than the standard in terms of how easily hair separates when dry (compared to the standard, when drying wet hair with a hairdryer while running your fingers through it, the wet hairs are slightly less likely to stick together and form bundles, so the hair is slightly more prone to separating). 3 points: The ease with which hair separates when dry is about the same as the standard (when drying wet hair with a hairdryer while running fingers through it, the ease with which wet hairs stick together or form bundles is about the same as the standard, and the ease with which hair separates is about the same as the standard). Points 2: Slightly inferior to the standard in terms of how easily the hair separates when dry (compared to the standard, when drying wet hair with a hairdryer while running your fingers through it, the wet hairs tend to stick together more easily and form clumps, making the hair slightly less likely to separate). 1 point: It is significantly inferior to the standard in terms of how easily the hair separates when dry (compared to the standard, when drying wet hair with a hairdryer while running your fingers through it, the wet hairs tend to stick together and form clumps, making it very difficult for the hair to separate).

[0117] (Evaluation criterion: Smoothness of the finished hair) 5 points: The finished hair is much smoother than the standard (compared to the standard, when you run your fingers through the finished hair from the roots to the ends, it is much smoother). 4 points: Slightly better than the standard in terms of the smoothness of the finished hair (when running your fingers through the finished hair from the roots to the ends, it is slightly smoother). 3 points: The finished hair has a smoothness comparable to the standard (when you run your fingers through the finished hair from the roots to the ends, it has a smoothness comparable to the standard). Points 2: The finished hair is slightly less smooth than the standard (compared to the standard, it is slightly less smooth when running your fingers through the hair from the roots to the ends). 1 point: The finished hair is significantly less smooth than the standard (compared to the standard, it is much harder to run your fingers through the hair from the roots to the ends).

[0118] (Evaluation criterion: Non-greasy feeling of the hair after the treatment) 5 points: The degree of stickiness of the finished hair is much less than the standard (compared to the standard, the finished hair feels almost completely free of stickiness when touched). 4 points: The degree of stickiness of the finished hair is slightly less than the standard (compared to the standard, the finished hair doesn't feel as sticky to the touch). 3 points: The stickiness of the finished product is about the same as the standard (the sticky feeling when touching the finished hair with your hand is about the same as the standard). 2 points: The degree of stickiness of the finished hair is slightly greater than the standard (compared to the standard, the finished hair feels slightly stickier to the touch). 1 point: The finished hair is much greasier than the standard (compared to the standard, the finished hair feels very sticky to the touch).

[0119] (Evaluation criteria: How well the hair stays together after styling) 5 points: The finished hair is much more manageable than the standard (compared to the standard, the entire hair bundle is much more cohesive). 4 points: Slightly better than the standard in terms of hair manageability (the overall hair strands are slightly more manageable compared to the standard). 3 points: The finished hair manageability is at the same level as the standard (the overall manageability of the finished hair strands is at the same level as the standard). 2 points: The finished hair is slightly less manageable than the standard (compared to the standard, the overall hair strands are slightly more spread out). 1 point: The finished hair is significantly inferior to the standard in terms of manageability (compared to the standard, the entire hair bundle is much more spread out).

[0120] (Evaluation results) The evaluation results for Examples 1-15 and Comparative Examples 1-10 are shown in Tables 1-7 below.

[0121] (Evaluation results: Example 1, Comparative Examples 1-5) Table 1 shows the evaluation results of the hair compositions of Example 1 and Comparative Examples 1-5.

[0122] [Table 1]

[0123] As shown in Table 1, the hair composition of Example 1, which contained predetermined amounts of (A), (B), and (C), exhibited superior ease of hair separation during drying compared to the hair compositions of Comparative Examples 1 to 5, which did not contain one or more of (A), (B), or (C). Furthermore, the hair composition of Example 1 also showed superior results compared to the hair compositions of Comparative Examples 1 to 5 in terms of ease of application, smoothness of finished hair, and manageability of finished hair. Therefore, it can be seen that combining predetermined amounts of (A), (B), and (C) in a hair composition results in superior ease of hair separation during drying.

[0124] (Evaluation results: Examples 1-5, Comparative Examples 5-8) Tables 2 and 3 show the evaluation results of the hair compositions for Examples 1-5 and Comparative Examples 5-8.

[0125] [Table 2]

[0126] [Table 3]

[0127] As shown in Tables 2 and 3, the hair compositions of Examples 1 to 5, which contained predetermined amounts of (A), (B), and (C), were superior in terms of hair separation during drying compared to the hair compositions of Comparative Examples 6 to 7 (without (A)) and the hair compositions of Comparative Examples 8 and 5 (without (A), (B), and (C)). Furthermore, the hair compositions of Examples 1 to 5 were superior to the hair compositions of Comparative Examples 5 to 8 in terms of the smoothness of the finished hair, the non-stickiness of the finished hair, and the manageability of the finished hair. Therefore, it can be seen that the combination of predetermined amounts of (A), (B), and (C) in the hair compositions results in superior hair separation during drying.

[0128] Furthermore, from the results shown in Tables 2 and 3, the hair composition (A) of Examples 1 to 3 had a kinematic viscosity of 10 mm at 25°C. 2 (containing silicone oil with a kinematic viscosity of less than / s) and hair compositions of Comparative Examples 6-7 (as a comparative component of (A), the kinematic viscosity at 25°C is 10 mm 2 From a comparison with silicone oils containing 10 mm² or more of kinematic viscosity at 25°C, it can be seen that (A) the inclusion of a silicone oil with a kinematic viscosity at 25°C within a specific range results in superior ease of hair separation during drying. Furthermore, in the hair compositions of Examples 1 to 3, the evaluation of ease of hair separation during drying was superior in the order of Example 1, Example 2, and Example 3. From these results, (A) the kinematic viscosity at 25°C is 10 mm². 2 Among silicone oils with a viscosity of less than / s, those with a lower kinematic viscosity at 25°C are preferable because they provide a better evaluation of how easily hair separates during drying.

[0129] Also, from the results shown in Table 2, the hair compositions of Examples 1 to 3 (formulated with a silicone oil having a kinematic viscosity at 25°C of less than 10 mm 2 / s) were superior to the hair compositions of Examples 4 to 5 (formulated with a hydrocarbon oil having a kinematic viscosity at 37.8°C of less than 20 mm 2 / s) in terms of ease of application and the coherence of the finished hair. From these results, it can be seen that when a silicone oil having a kinematic viscosity at 25°C of less than 10 mm 2 / s is formulated as (A) in the hair composition, it is excellent in terms of ease of application and evaluation of the coherence of the finished hair, which is preferable.

[0130] (Evaluation results: Example 6, Comparative Example 9, Comparative Example 5) Table 4 shows the evaluation results of the hair compositions of Example 6, Comparative Example 9, and Comparative Example 5.

[0131]

Table 4

[0132] From the results shown in Table 4, the hair composition of Example 6, in which a predetermined amount of (A), (B), and (C) were formulated, was superior to the hair composition of Comparative Example 9 (without (A)) and the hair composition of Comparative Example 5 (without (A), (B), and (C)) in terms of the tendency of the hair to frizz during drying. Also, the hair composition of Example 6 was superior in terms of ease of application, slipperiness of the finished hair, lack of stickiness of the finished hair, and coherence of the finished hair in each evaluation item compared to the hair compositions of Comparative Examples 5 and 9.

[0133] Also, from the results shown in Table 4, the hair composition of Example 6 contains a hydrocarbon oil having a kinematic viscosity at 37.8°C of less than 20 mm 2 / s as (A), while the hair compositions of Comparative Examples 6 to 7 contain a hydrocarbon oil having a kinematic viscosity at 37.8°C of 20 mm 2 / s or more as the comparative component of (A). From these results, it can be seen that when a hydrocarbon oil having a kinematic viscosity at 37.8°C of less than 20 mm 2It has been found that incorporating hydrocarbon oils with a viscosity of less than / s results in superior hair separation when dry.

[0134] (Evaluation results: Example 1, Examples 7-8, Comparative Example 1, Comparative Example 10, Comparative Example 5) Table 5 shows the evaluation results for the hair compositions of Example 1, Examples 7-8, Comparative Example 1, Comparative Example 10, and Comparative Example 5.

[0135] [Table 5]

[0136] As shown in Table 5, the hair compositions of Examples 7-8 and Example 1, which contained (A), (B), and (C) and had a total amount of (A) of 1% by mass or more, exhibited superior ease of hair separation during drying compared to the hair compositions of Comparative Examples 1 and 10 (without (A) or containing 0.5% by mass), and the hair composition of Comparative Example 5 (without (A), (B), and (C)). Therefore, it can be seen that the inclusion of (A), (B), and (C) in the hair composition, with a total amount of (A) of 1% by mass or more, results in superior ease of hair separation during drying.

[0137] Furthermore, comparing the evaluation results of the hair compositions of Examples 7, 1, and 8 (with total amounts of (A) of 1% by mass, 5% by mass, and 15% by mass, respectively) as shown in Table 5, it was found that as the total amount of (A) increased, the ease of hair separation during drying improved, and the results were also better in the evaluation items of ease of application, smoothness of finished hair, non-stickiness of finished hair, and manageability of finished hair. Therefore, from the viewpoint of excelling in each of the above evaluation items, it is preferable that the total amount of (A) in the hair composition increases.

[0138] (Evaluation results: Example 1, Examples 9-12, Comparative Example 5) Table 6 shows the evaluation results of the hair compositions for Example 1, Examples 9-12, and Comparative Example 5.

[0139] [Table 6]

[0140] As shown in Table 6, the hair compositions of Examples 1 and 9-12, which contained predetermined amounts of (A), (B), and (C), exhibited superior ease of hair separation during drying compared to the hair composition of Comparative Example 5 (which did not contain (A), (B), and (C)). From these results, it can be seen that even when polymers having various cationic groups are used as (B) in hair compositions containing predetermined amounts of (A), (B), and (C), the ease of hair separation during drying is also superior.

[0141] Furthermore, as shown in Table 6, the hair compositions of Examples 1 and 9 (containing cationized polysaccharides as (B)) were superior to the hair compositions of Examples 10 to 12 (containing polymers with cationic groups other than cationized polysaccharides as (B)) in terms of ease of application, smoothness of the finished hair, and lack of stickiness of the finished hair. From these results, it can be seen that cationized polysaccharides are preferred as (B) to be incorporated into the hair composition from the viewpoint of superior ease of application, smoothness of the finished hair, and lack of stickiness of the finished hair.

[0142] (Evaluation results: Example 1, Examples 13-15, Comparative Example 5) Table 7 shows the evaluation results of the hair compositions for Example 1, Examples 13-15, and Comparative Example 5.

[0143] [Table 7]

[0144] As shown in Table 7, the hair compositions of Examples 1 and 13-15, which contained predetermined amounts of (A), (B), and (C), exhibited superior ease of hair separation during drying compared to the hair composition of Comparative Example 5 (which did not contain (A), (B), and (C)). Furthermore, the hair compositions of Examples 1 and 13-14 (containing mono-long-chain alkyltrimethylammonium salt as (D)) exhibited even greater ease of hair separation during drying compared to the hair composition of Example 15 (containing di-long-chain alkyldimethylammonium salt as (D)), and also showed superior ease of application, smoothness of the finished hair, and lack of stickiness of the finished hair. Therefore, it is preferable to use mono-long-chain alkyltrimethylammonium salt as (D) in hair compositions containing predetermined amounts of (A), (B), and (C).

[0145] (MIU measurement) MIU measurements were performed using hair bundles treated with the hair compositions of Example 1 and Examples 13-15, according to the measurement method described below. The hair treatment was carried out in the same manner as the hair treatment in the sensory evaluation described above.

[0146] (Measurement method) Eleven hairs were taken from each hair bundle treated with the hair compositions of Example 1 and Examples 13-15, arranged on a glass slide at 1 mm intervals, and secured at both ends with cellophane tape to prepare the measurement samples. Hairs of roughly the same thickness were selected for sampling. The MIU (Minimum Indication of Slipperiness) of these measurement samples was measured in a constant temperature and humidity chamber (25°C, 50% relative humidity) using a slip tester (Kato Tech Co., Ltd. "KES-SE(STP)"). A silicone rubber friction element was used, a 25 g load was applied, and the friction tester was moved from the root to the tip of the hair at a speed of 1 mm / sec to measure the MIU. A smaller MIU value indicates better hair slipperiness.

[0147] (Evaluation results: Example 1, Examples 13-15) Table 8 shows the evaluation results of MIU of hair treated with the hair compositions of Example 1 and Examples 13-15.

[0148] [Table 8]

[0149] As shown in Table 7, the hair compositions of Examples 1 and 13-14 (containing mono-long-chain alkyltrimethylammonium salt as (D)) had lower MIU values ​​compared to the hair composition of Example 15 (containing di-long-chain alkyldimethylammonium salt as (D)). A lower MIU value indicates superior hair smoothness, and this correlated with the results of the sensory evaluation of the hair smoothness of the hair compositions of Examples 1 and 13-14. Therefore, it is preferable to use mono-long-chain alkyltrimethylammonium salt as (D) in a hair composition containing a predetermined amount of (A), (B), and (C).

Claims

1. The kinematic viscosity at 25°C is 10 mm². ２ Silicone oil with a kinematic viscosity of less than 0.25 / s and a kinematic viscosity of 20 mm at 37.8°C. ２ One or more hydrocarbon oils with a viscosity of less than / s, Polymers having cationic groups, and Hydroxyalkylcellulose, It is formulated with The kinematic viscosity at 25°C is 10 mm². ２ Silicone oil with a kinematic viscosity of less than 0.25 / s and a kinematic viscosity of 20 mm at 37.8°C. ２ The total amount of hydrocarbon oils with a concentration of less than / s is 1% by mass or more. Composition for hair.

2. The kinematic viscosity at 25°C is 10 mm ２ Silicone oil with a kinematic viscosity of less than 0.25 / s and a kinematic viscosity of 20 mm at 37.8°C. ２ One or more hydrocarbon oils selected from those with a viscosity of less than / s, with a kinematic viscosity at 25°C of at least 10 mm². ２ The hair composition according to claim 1, comprising a silicone oil of less than / s.

3. A silicone oil having a kinematic viscosity at 25 °C of less than 10 mm ２ / s, and a total blending amount of a hydrocarbon oil having a kinematic viscosity at 37.8 °C of less than 20 mm ２ / s is 5% by mass or more. The hair composition according to claim 1 or claim 2.

4. The hair composition according to claim 1 or claim 2, wherein the polymer having the cationic group is a cationized polysaccharide.

5. A hair composition according to claim 1 or claim 2, comprising a cationic surfactant and a higher alcohol, and having a cream-like formulation.

6. A hair composition according to claim 1 or claim 2, which is used in a way that does not require rinsing.

7. A hair treatment method using the hair composition described in claim 1 or claim 2.

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