Hair cosmetics

Abstract

This invention relates to a hair cosmetic that contains a sufficient amount of polyol and provides excellent performance not only when applied to wet hair, but also when rinsing the hair after application and after drying. [Solution] The following components (A) to (E): (A) Polyols having 3 or more hydroxyl groups in a single molecule: 10% by mass or more (B) Alkyl glyceryl ether having a branched alkyl group (C) Cationic surfactant (D) Faliphatic alcohols (E)Water Hair cosmetic containing [ingredient].

Description

[Technical Field]

[0001] This invention relates to hair cosmetic products. [Background technology]

[0002] A mixture of cationic surfactants, aliphatic alcohols, and water is known to form α-gels. α-gels have a layered structure consisting of a bilayer structure, or so-called lamellar layers, and possess the property of encapsulating a large amount of water between the lamellar layers. Such α-gels are considered suitable for imparting desired performance in hair cosmetics such as hair conditioners, which are applied to wet hair after washing and rinsed with water. Various developments have been undertaken to achieve this.

[0003] For example, Patent Document 1 discloses a hair conditioning composition containing a cationic surfactant, a high-melting-point aliphatic compound, a monoalkyl ether, and an aqueous carrier such as water, and attempts have been made to provide styling and volume-enhancing effects. Patent Document 2 also discloses a hair cosmetic composition containing organic acids, amino acids, cationic surfactants, and silicones, which is produced by adding and mixing polyols and water to form a liquid crystal, and aims to improve the feel when applied to the hair and the finished feel. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Special Publication No. 2019-501187 [Patent Document 2] Japanese Patent Publication No. 2006-225307 [Overview of the project] [Problems that the invention aims to solve]

[0005] Cationic surfactants and aliphatic alcohols, which, along with water, are responsible for forming α-gels, are ingredients that can provide a smooth feel and moisturizing effect to the hair, not only during application but also from rinsing through to drying, resulting in a good overall care experience. Furthermore, polyols are ingredients that can provide a good overall care experience from application through to drying. On the other hand, as the content of these ingredients increases, there is a higher risk of excessive viscosity, which can prevent the hair cosmetic from being adequately distributed throughout the hair, potentially impairing the feel of use and the care experience on the applied hair, as well as potentially reducing frizz and waviness in the finished hair. However, the aforementioned Patent Documents 1 and 2 do not adequately consider these circumstances, and even if silicones are used as described in Patent Document 2, there is a concern that it may actually cause an unpleasant sticky feeling in the hair.

[0006] Therefore, the present invention relates to a hair cosmetic that contains a sufficient amount of polyol and provides excellent performance not only when applied to wet hair, but also when rinsing the hair after application and after drying the hair. [Means for solving the problem]

[0007] The present invention comprises the following components (A) to (E): (A) Polyols having 3 or more hydroxyl groups in a single molecule: 10% by mass or more (B) Alkyl glyceryl ether having a branched alkyl group (C) Cationic surfactant (D) Faliphatic alcohols (E)Water This invention provides a hair cosmetic product containing [a specific ingredient]. [Effects of the Invention]

[0008] The hair cosmetic of the present invention, despite having a high polyol content, provides a high level of care when applied to wet hair after washing. Furthermore, because it maintains an appropriate viscosity, it can be thoroughly spread throughout the entire wet hair, effectively reducing frizz and waviness in the finished hair. [Modes for carrying out the invention]

[0009] The present invention will be described in detail below. In this invention, "hair" primarily refers to human head hair, but also includes hair that has been detached from a human head. Furthermore, in the present invention, "care sensation" refers to a pleasant feeling obtained through a conditioning effect, such as softness, smoothness, and moistness, which is felt at the application site of the hair cosmetic of the present invention when applied to wet hair after washing, or at the application site of the hair after rinsing.

[0010] The hair cosmetic composition of the present invention was discovered by first focusing on the size of lamellar domains, which are gel clusters having a lamellar structure surrounded by an outer aqueous phase that constitute the α-gel. Furthermore, the hair cosmetic composition of the present invention was discovered by focusing on the fact that the larger the size of such lamellar domains, the greater the feeling of care on wet hair after washing and rinsing, but there is still no technology that can fully exert the desired effect by controlling the lamellar domains.

[0011] Here, assuming that the formation of α-gels can be considered in the same way as the formation of solid crystals, the lamellar domain size corresponds to the crystallite size in solid crystals. It is known that the crystallite size of such a solid is determined by two factors, nucleation and nucleation growth, and the degree of dominance of nucleation and nucleation growth is as shown in equation (x) below, with respect to the melting point T m (°C) and the freezing point T f It is known that this can be determined by calculating the degree of supercooling ΔT(°C), which is the difference from (°C). ΔT(℃)=T m -T f...(x) In other words, in α-gels as well, the larger the value of ΔT, the more dominant nucleation of α-type hydrated crystals becomes, and the smaller the size of the lamellar domains. On the other hand, the smaller the value of ΔT, the more dominant nucleation of α-type hydrated crystals becomes, and the larger the size of the lamellar domains becomes, resulting in a greater feeling of care on wet hair after washing and rinsing. Thus, there is a close positive correlation between the value of ΔT and the feeling of care on wet hair. Therefore, in this invention, the T value, which can be measured by a differential scanning calorimeter (DSC), m , and T f Since the value of ΔT (degree of supercooling) can be calculated using this method, this ΔT value is used as an indicator for evaluating the feeling of care on wet hair after washing and rinsing. The hair cosmetic of the present invention not only promotes the growth of lamellar domain size but also moderately expands the spaces between the lamellar layers of the α-gel while maintaining an appropriate viscosity. Therefore, it can be thoroughly distributed throughout wet hair, effectively reducing frizz and waviness in the hair after drying. Furthermore, the specific examples will demonstrate how this ΔT (degree of supercooling) value can serve as an indicator for evaluating the feeling of care on wet hair during actual washing and rinsing.

[0012] The hair cosmetic composition of the present invention contains 10% by mass or more of a polyol having 3 or more hydroxyl groups in one molecule as component (A). In the present invention, while having a high content of such component (A), it is possible to maintain an appropriate viscosity while ensuring a good feeling of care for the hair, and effectively alleviate frizz and waviness in the hair after drying. Component (A) preferably contains carbon atoms with 2 to 12 carbon atoms, and more preferably contains carbon atoms with 2 to 6 carbon atoms, from the viewpoint of ensuring a good feeling of care for the hair, maintaining an appropriate viscosity, and effectively reducing frizz and waves in the hair after drying. Further, component (A) preferably includes those having a ClogP value of -4 or more and 0 or less, more preferably includes those having a ClogP value of -3.5 or more and -0.5 or less, and still more preferably includes those having a ClogP value of -3 or more and -1 or less.

[0013] Here, the "logP value" is a logarithmic value of the 1-octanol / water partition coefficient of a compound. When a compound dissolves as a solute in a two-liquid-phase solvent system of 1-octanol and water, in the distribution equilibrium, it refers to the ratio of the equilibrium concentration of the solute in each solvent, and is generally expressed in the form of logarithm "logP" with base 10. That is, the logP value is an indicator of lipophilicity (hydrophobicity): the higher this value, the more hydrophobic the compound is, and the smaller the value, the more hydrophilic the compound is. For logP values, for example, logP values published in databases available from Daylight Chemical Information Systems, Inc. (Daylight CIS) and others can be referenced as actual measured values. In addition, CLogP is a value estimated from the affinity of an organic compound for water and 1-octanol [P = (concentration of organic compound in 1-octanol phase) / (concentration of organic compound in aqueous phase)], and can be calculated by a calculation program using fragment values of atomic groups determined by the number of atoms constituting the compound molecule and the types of chemical bonds. In the present invention, CLogP calculated by ChemDraw ver. 25.5 from PerkinElmer Inc. is used. This CLogP value is currently the most common and reliable estimated value, and in the present invention, the term "ClogP value" refers to this. When component (A) contains a plurality of types of components, it is preferable that the ClogP value of each component falls within the above range.

[0014] Specific examples of such component (A) include one or more selected from the group consisting of glycerin, diglycerin, polyglycerin, sorbitol, erythritol, pentaerythritol, xylitol, and mannitol, etc. The component (A) used in the present invention preferably contains one or more selected from glycerin, sorbitol, and polyethylene glycol, and more preferably contains one or more selected from glycerin and sorbitol.

[0015] The content of component (A) in the hair cosmetic of the present invention is 10% by mass or more, preferably 70% by mass or less, more preferably 60% by mass or less, even more preferably 49% by mass or less, and even more preferably 30% by mass or less, while ensuring a high level of care for wet hair after washing and rinsing, and effectively exhibiting an effect of reducing frizz and waves in the hair. Furthermore, the content of component (A) in the hair cosmetic of the present invention is 10% by mass or more, preferably 10 to 70% by mass, more preferably 10 to 60% by mass, even more preferably 10 to 49% by mass, and even more preferably 10 to 30% by mass.

[0016] The hair cosmetic composition of the present invention contains an alkyl glyceryl ether having a branched alkyl group as component (B). From the viewpoint of ensuring a high level of care for wet hair after washing and rinsing, while effectively exhibiting an effect of reducing frizz and waviness in the hair, component (B) preferably contains a branched alkyl group with 8 or more carbon atoms, preferably 22 or less, and more preferably 18 or less. Examples of such alkylglyceryl ethers include, for example, one or more selected from 2-ethylhexylglyceryl ether, 2-methyloctylglyceryl ether, isodecylglyceryl ether, isooctadecylglyceryl ether, and isostearylglyceryl ether. The component (B) used in the present invention preferably includes one or more selected from 2-ethylhexylglyceryl ether, isodecylglyceryl ether, and isostearylglyceryl ether, and more preferably includes isostearylglyceryl ether. In this invention, the alkylglyceryl ether having an alkyl group in the branched chain of component (B) does not include alkylglyceryl ether having a polyoxyethylene chain, i.e., polyoxyethylene alkylglyceryl ether.

[0017] From the viewpoint of promoting the growth of lamellar domain size while effectively exhibiting an effect of reducing frizz and waviness in hair, the content of component (B) in the hair cosmetic composition of the present invention is preferably 0.05% by mass or more, more preferably 0.07% by mass or more, even more preferably 0.1% by mass or more, preferably 3% by mass or less, more preferably 2% by mass or less, and even more preferably 1% by mass or less. Furthermore, the content of component (B) in the hair cosmetic composition of the present invention is preferably 0.05 to 3% by mass, more preferably 0.07 to 2% by mass, and even more preferably 0.1 to 1% by mass.

[0018] The mass ratio ((A) / (B)) of the content of component (A) to the content of component (B) is preferably 10 or more, more preferably 12 or more, even more preferably 15 or more, preferably 700 or less, more preferably 500 or less, even more preferably 200 or less, and even more preferably 100 or less, from the viewpoint of promoting the growth of lamellar domain size, maintaining an appropriate viscosity, and effectively exhibiting an effect of reducing frizz and waviness in hair. Furthermore, the mass ratio ((A) / (B)) of the content of component (A) to the content of component (B) is preferably 10 to 700, more preferably 10 to 500, even more preferably 12 to 200, and even more preferably 15 to 100.

[0019] The hair cosmetic composition of the present invention contains a cationic surfactant as component (C). This component (C) may be one or more selected from alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, and alkylamidealkyltrimethylammonium salts, or one or more selected from alkyldimethylamine and its salts, alkoxyalkyldimethylamine and its salts, and alkylamidealkyldimethylamine and its salts, which react with an acid to form a tertiary amine and act as a cationic surfactant.

[0020] Examples of alkyltrimethylammonium salts include alkyltrimethylammonium salts having an alkyl group with 12 to 22 carbon atoms, specifically, one or more selected from, for example, cetyltrimethylammonium chloride (cetrimonium chloride), stearyltrimethylammonium chloride (steartrimonium chloride), and behenyltrimethylammonium chloride (behentrimonium chloride).

[0021] Examples of alkoxyalkyltrimethylammonium salts include alkoxyalkyltrimethylammonium salts having an alkoxy group with 12 to 22 carbon atoms, specifically, one or more selected from stearoxypropyltrimethylammonium chloride, stearoxyethyltrimethylammonium chloride, and stearoxyhydroxypropyltrimethylammonium chloride.

[0022] Examples of dialkyldimethylammonium salts include dialkyldimethylammonium salts having an alkyl group with 12 to 22 carbon atoms, specifically one or more selected from distearyldimethylammonium chloride, dialkyl(C12-15)dimethylammonium salt, dicetyl(C16)dimethylammonium salt, dialkyl(C12-18)dimethylammonium salt, didecyl(C10)dimethylammonium salt, dilauryl(C12)dimethylammonium salt, dicocodimethylammonium salt(C8-16), dimyristyl(C14)dimethylammonium salt, distearyl(C18)dimethylammonium salt, diarachil(C20)dimethylammonium salt, dibehenyl(C22)dimethylammonium salt, and stearyllauryldimethylammonium salt.

[0023] Examples of alkylamide alkyltrimethylammonium salts include alkylamide alkyltrimethylammonium salts having an alkyl group with 11 to 21 carbon atoms, specifically palmitamidopropyltrimethylammonium chloride (palmitamidopropyltrimonium chloride), etc.

[0024] Alkyldimethylamines and their salts preferably have an alkyl group with 12 to 22 carbon atoms. Specifically, examples include N,N-dimethylbehenylamine, N,N-dimethylstearylamine, and organic salts such as their lactates and glycolates.

[0025] Examples of alkoxyalkyldimethylamines and their salts include alkyl groups having 12 to 22 carbon atoms, specifically, N,N-dimethyl-3-hexadecyloxypropylamine, N,N-dimethyl-3-octadecyloxypropylamine (stearoxypropyldimethylamine), and their organic salts.

[0026] Alkylamide alkyldimethylamines and their salts preferably have an alkyl group with 11 to 21 carbon atoms. Specifically, examples include N,N-dimethylpropylamine (behenamidopropyldimethylamine), N-[3-(dimethylamino)propyl]docosanamide, N-[3-(dimethylamino)propyl]stearamide (stearamidopropyldimethylamine), and organic salts such as lactates and glycolates thereof.

[0027] In the present invention, the component (C) is preferably selected from alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkoxyalkyldimethylamine and its salts, and alkylamidealkyldimethylamine and its salts, in order to ensure a high level of care not only from the time of application to the hair until rinsing and even after drying. It is more preferably selected from alkyltrimethylammonium salts, alkoxyalkyldimethylamine and its salts, and alkylamidealkyldimethylamine and its salts.

[0028] The content of component (C) in the hair cosmetic of the present invention is preferably 1.5% by mass or more, preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 4% by mass or less, from the viewpoint of ensuring a high level of care from the time of application to the hair until rinsing. Furthermore, the content of component (C) in the hair cosmetic of the present invention is preferably 1.5 to 10% by mass, more preferably 1.5 to 5% by mass, and even more preferably 1.5 to 4% by mass.

[0029] The mass ratio ((A) / (C)) of the content of component (A) to the content of component (C) is preferably 1 or more, more preferably 3 or more, even more preferably 5 or more, preferably 45 or less, more preferably 18 or less, even more preferably 10 or less, and even more preferably 8 or less, from the viewpoint of providing an excellent feeling of care from the time of application to the hair until rinsing, and from the viewpoint of effectively exhibiting an effect of reducing frizz and waves in the hair. Furthermore, the mass ratio ((A) / (C)) of the content of component (A) to the content of component (C) is preferably 1 to 45, more preferably 1 to 18, even more preferably 3 to 10, and even more preferably 5 to 8.

[0030] The mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is preferably 0.02 or more, more preferably 0.03 or more, even more preferably 0.04 or more, preferably 0.45 or less, more preferably 0.4 or less, and even more preferably 0.35 or less, from the viewpoint of providing an excellent feeling of care from the time of application to the hair until rinsing, and from the viewpoint of effectively exhibiting an effect of reducing frizz and waves in the hair. Furthermore, the mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is preferably 0.02 to 0.45, more preferably 0.03 to 0.4, and even more preferably 0.04 to 0.35.

[0031] The hair cosmetic composition of the present invention contains an aliphatic alcohol as component (D). The aliphatic alcohol of component (D) is a monohydric alcohol having a linear or branched hydrocarbon group. As for component (D), from the viewpoint of providing an excellent feeling of care from the time of application to the hair until rinsing, and from the viewpoint of effectively exhibiting an effect of reducing frizz and waves in the hair, it is preferable to include hydrocarbon groups with 6 to 36 carbon atoms, more preferably 10 to 24 carbon atoms, even more preferably 12 to 22 carbon atoms, and even more preferably 14 to 22 carbon atoms. Furthermore, the hydrocarbon group is preferably a linear or branched alkyl group, and more preferably a linear alkyl group.

[0032] Specifically, such component (D) can be one or more selected from myristyl alcohol, cetanol, stearyl alcohol, arachidyl alcohol, behenyl alcohol, and oleyl alcohol. In particular, component (D) used in the present invention preferably contains one or more selected from stearyl alcohol, cetanol, behenyl alcohol, and oleyl alcohol, and more preferably contains stearyl alcohol.

[0033] The content of component (D) in the hair cosmetic composition of the present invention is preferably 3% by mass or more, more preferably 3.5% by mass or more, even more preferably 4% by mass or more, preferably 15% by mass or less, more preferably 13% by mass or less, and even more preferably 12% by mass or less. Furthermore, the content of component (D) in the hair cosmetic composition of the present invention is preferably 3 to 15% by mass, more preferably 3.5 to 13% by mass, and even more preferably 4 to 12% by mass.

[0034] The hair cosmetic composition of the present invention contains water as component (E). By including such component (E), the solubility or dispersibility of each component can be ensured, and the formation of α-gel can be effectively promoted. The content of component (E) in the hair cosmetic composition of the present invention is preferably 30% by mass or more, more preferably 35% by mass or more, even more preferably 40% by mass or more, and preferably 90% by mass or less. Furthermore, the content of component (E) in the hair cosmetic composition of the present invention is preferably 30 to 90% by mass, more preferably 35 to 90% by mass, and even more preferably 40 to 90% by mass.

[0035] The hair cosmetic composition of the present invention may contain oily components as components other than those mentioned above. Specifically, such oily components include, for example, non-volatile silicones such as dimethylpolysiloxane, methylphenylpolysiloxane, polyether-modified silicone, amino-modified silicone, and aminopolyether-modified silicone; Low-boiling point chain silicones such as hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane, and hexadecamethylheptasiloxane; Cyclic silicones such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane; Hydrocarbon oils such as liquid paraffin, liquid isoparaffin, light liquid isoparaffin, polybutene, hydrogenated polydecene, petrolatum, squalane, and isododecane; Ester oils such as diglyceryl isostearate, triglyceryl isostearate, triglyceryl 2-ethylhexanoate (trioctanoin), caprylic / capric triglyceride, isopropyl myristate, isopropyl palmitate, cetyl 2-ethylhexanoate, diisostearyl maleate, 2-heptyl undecyl palmitate, isotridecyl isononanoate, and octyldodecyl myristate; One or more waxes selected from beeswax, whale wax, lanolin, carnauba wax, candelilla wax, hydrogenated jojoba oil, montan wax, etc.

[0036] The oily component content in the hair cosmetic composition of the present invention is preferably 1% by mass or more, preferably 10% by mass or less, more preferably 9% by mass or less, and even more preferably 8% by mass or less. Furthermore, the oily component content in the hair cosmetic composition of the present invention is preferably 1 to 10% by mass, more preferably 1 to 9% by mass, and even more preferably 1 to 8% by mass.

[0037] In addition to the above components, the hair cosmetic composition of the present invention may appropriately contain other components commonly used as cosmetic raw materials. Such components include polyols other than component (A) above, such as ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, isoprene glycol, and hexylene glycol; nonionic surfactants other than component (B) above; anionic surfactants and amphoteric surfactants; cationic polymers and silicones; fragrances; humectants; preservatives; chelating agents; pH adjusters; stabilizers; antioxidants; bactericides; protein derivatives; hydrolyzed proteins; amino acids; plant extracts; herbal extracts; vitamins; and UV absorbers.

[0038] The viscosity of the hair cosmetic composition of the present invention at 30°C is preferably 6000 mPa·s or more, more preferably 7000 mPa·s or more, even more preferably 8000 mPa·s or more, preferably 130000 mPa·s or less, more preferably 120000 mPa·s or less, and even more preferably 110000 mPa·s or less, from the viewpoint of maintaining excellent dispersibility in water and achieving good applicability to wet hair. Specifically, the viscosity value refers to the value measured by the method described in the examples.

[0039] The hair cosmetic composition of the present invention is intended for use on hair, but it may also be intended for use on fibers for headwear products. Here, "headwear products" means, for example, hair wigs, hairpieces, weaving, hair extensions, braided hair, hair accessories, doll hair, etc. "Fibers for headwear products" means fibers used in such headwear products, but does not include hair.

[0040] The fibers used for headwear products may be either naturally derived fibers or synthetic fibers, but naturally derived fibers are preferred. Naturally derived fibers refer to fibers (excluding human hair) extracted from natural animals and plants, or fibers artificially manufactured using proteins, polysaccharides, etc. as raw materials. Among such naturally derived fibers, fibers artificially manufactured using animal hair, keratin, collagen, or casein, as well as proteins such as those derived from soybeans, peanuts, corn, or silk, or polysaccharides, etc., are preferred. Regenerated protein fibers made from keratin, collagen, casein, soy protein, peanut protein, corn protein, silk protein (e.g., silk fibroin), etc., are more preferred. Regenerated protein fibers such as regenerated collagen fibers made from collagen, or regenerated silk fibers made from silk fibroin, are even more preferred, and regenerated collagen fibers are even more preferred. Regenerated collagen fibers can be manufactured using known technologies. The composition of regenerated collagen fibers does not have to be 100% collagen; it may contain natural polymers, synthetic polymers, or additives for quality improvement. Furthermore, regenerated collagen fibers may be post-processed or post-treated. Generally, regenerated collagen fibers are preferred in the form of filaments taken from bobbins or boxes. In addition, filaments that come out of the drying process can be directly used in the manufacturing process of regenerated collagen fibers.

[0041] Furthermore, synthetic fibers include fibers that mainly contain synthetic resin. From the viewpoint of ease of manufacturing synthetic fibers and obtaining a texture similar to hair, such synthetic resins are preferably thermoplastic resins, and more preferably one or more selected from polyester resin, polyamide resin, polyimide resin, polyamide-imide resin, vinyl chloride resin, polycarbonate resin, polyphenylene sulfide resin, and modacrylic resin (a copolymer of acrylonitrile and vinyl chloride). The term "main component" refers to a component whose content in the synthetic fiber is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, even more preferably 80% by mass or more, and even more preferably 90% by mass or more, and 100% by mass or less. In addition to the synthetic resin described above, the synthetic fiber may further contain various components such as flame retardants, flame retardant enhancers, light or heat stabilizers, fluorescent agents, antioxidants, antistatic agents, and ultraviolet absorbers, to the extent that they do not impair the effects of the present invention.

[0042] Examples of the hair cosmetic composition of the present invention include, specifically, hair rinse, hair conditioner, hair treatment, hair pack, and hair mask. Among these, a hair conditioner is preferred, which is applied to wet hair after washing and then rinsed off with bath water or the like. Specifically, such a method of use involves, for example, washing the hair with a cleansing agent such as shampoo, then applying the hair cosmetic of the present invention to the wet hair, spreading it evenly throughout the hair, and then rinsing it off with bath water or the like. Next, the hair is towel-dried and finished by drying it with a hairdryer or the like.

[0043] The method for producing the hair cosmetic composition of the present invention is not particularly limited. For example, the hair cosmetic composition of the present invention can be produced by blending components (A) to (E) and other components in a known manner and mixing them using a known stirring device or the like. In this case, it is preferable to prepare a mixture of water-soluble components and a mixture of oil-soluble components separately, uniformly dissolve each blended component, and then mix them to obtain the hair cosmetic composition of the present invention. To efficiently increase the size of lamellar domains, it is preferable to obtain a hair cosmetic by, for example, the following procedure. First, a mixture of water-soluble components and a mixture of oil-soluble components are prepared separately. Specifically, a mixture of components (A), (E), and other water-soluble components, and a mixture of components (B), (C), (D), and other oil-soluble components are prepared, respectively. Next, these mixtures are heated separately to form a homogeneous mixed solution, and then gradually mixed while maintaining the temperature. After mixing is complete, the mixture is cooled to room temperature (25°C) to obtain the hair cosmetic of the present invention. At this time, the heating temperature is about 50 to 80°C, more preferably about 50 to 62°C. From the viewpoint of manufacturing efficiency, etc., a hair cosmetic with efficiently increased lamellar domain size can be obtained whether component (A) is mixed with the mixture of water-soluble components or with the mixture of oil-soluble components. In this way, by preparing the hair cosmetic of the present invention, it is possible to obtain a hair cosmetic that has a high polyol content, yet provides a high level of care when applied to wet hair after washing, and effectively reduces frizz and waviness in the finished hair.

[0044] With regard to the embodiments described above, the present invention further discloses the following hair cosmetic composition. [1] The following components (A) to (E): (A) Polyols having 3 or more hydroxyl groups in a single molecule: 10% by mass or more (B) Alkyl glyceryl ether having a branched alkyl group (C) Cationic surfactant (D) Faliphatic alcohols (E)Water Hair cosmetic containing [ingredient]. [2] The hair cosmetic according to [1] above, wherein the mass ratio ((A) / (B)) of the amount of component (A) to the amount of component (B) is 10 or more and 500 or less. [3] The hair cosmetic according to [1] or [2] above, wherein the mass ratio ((B) / (C)) of the amount of component (B) to the amount of component (C) is 0.02 or more and 0.45 or less. [4] A hair cosmetic according to any one of the above [1] to [3], wherein the content of component (B) is 0.05% by mass or more and 3% by mass or less. [5] A hair cosmetic according to any one of the above [1] to [4], wherein the mass ratio ((A) / (C)) of the amount of component (A) to the amount of component (C) is 1 or more and 18 or less.

[0045] [6] A hair cosmetic according to any one of the above [1] to [5], wherein the content of component (A) is 10% by mass or more and 70% by mass or less. [7] A hair cosmetic composition according to any one of the above [1] to [6], wherein component (A) preferably has 2 to 12 carbon atoms. [8] A hair cosmetic composition according to any one of the above [1] to [6], wherein component (A) more preferably has 2 to 6 carbon atoms. [9] A hair cosmetic according to any one of the above [1] to [8], wherein component (A) preferably comprises one or more selected from glycerin, sorbitol, and polyethylene glycol.

[10] A hair cosmetic according to any one of the above [1] to [8], wherein component (A) more preferably comprises one or two selected from glycerin and sorbitol.

[11] A hair cosmetic according to any one of the above [1] to

[10] , wherein the content of component (A) is more preferably 10 to 60% by mass.

[12] A hair cosmetic composition according to any one of the above [1] to

[10] , wherein the content of component (A) is more preferably 10 to 49% by mass.

[13] A hair cosmetic according to any one of the above [1] to

[10] , wherein the content of component (A) is more preferably 10 to 30% by mass.

[0046]

[14] Component (B) is a hair cosmetic according to any one of the above [1] to

[13] , comprising a branched alkyl group having 8 or more carbon atoms and 22 or less carbon atoms.

[15] Component (B) is a hair cosmetic according to any one of the above [1] to

[13] , which contains a branched alkyl group having 8 or more carbon atoms and 18 or less carbon atoms.

[16] A hair cosmetic according to any one of the above [1] to

[15] , wherein component (B) preferably comprises one or more selected from 2-ethylhexylglyceryl ether, isodecylglyceryl ether, and isostearylglyceryl ether.

[17] A hair cosmetic according to any one of the above [1] to

[15] , wherein component (B) more preferably comprises isostearyl glyceryl ether.

[18] A hair cosmetic composition according to any one of the above [1] to

[17] , wherein the content of component (B) is more preferably 0.07 to 2% by mass.

[19] A hair cosmetic composition according to any one of the above [1] to

[17] , wherein the content of component (B) is more preferably 0.1 to 1% by mass.

[20] A hair cosmetic according to any one of the above [1] to

[19] , wherein the mass ratio ((A) / (B)) of the amount of component (A) to the amount of component (B) is more preferably 10 to 500.

[21] A hair cosmetic composition according to any one of the above [1] to

[19] , wherein the mass ratio ((A) / (B)) of the amount of component (A) to the amount of component (B) is more preferably 12 to 200.

[22] A hair cosmetic composition according to any one of the above [1] to

[19] , wherein the mass ratio ((A) / (B)) of the amount of component (A) to the amount of component (B) is more preferably 15 to 100.

[0047]

[23] A hair cosmetic according to any one of the above [1] to

[22] , wherein component (C) preferably comprises one or more selected from alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkoxyalkyldimethylamines and their salts, and alkylamidealkyldimethylamines and their salts.

[24] A hair cosmetic according to any one of the above [1] to

[22] , wherein component (C) more preferably comprises one or more selected from alkyltrimethylammonium salts, alkoxyalkyldimethylamines and their salts, and alkylamidealkyldimethylamines and their salts.

[25] A hair cosmetic according to any one of the above [1] to

[24] , wherein the content of component (C) is preferably 1.5 to 10% by mass.

[26] A hair cosmetic according to any one of the above [1] to

[24] , wherein the content of component (C) is more preferably 1.5 to 5% by mass.

[27] A hair cosmetic according to any one of the above [1] to

[24] , wherein the content of component (C) is more preferably 1.5 to 4% by mass.

[28] A hair cosmetic according to any one of the above [1] to

[27] , wherein the mass ratio ((A) / (C)) of the amount of component (A) to the amount of component (C) is more preferably 1 or more and 18 or less.

[29] A hair cosmetic according to any one of the above [1] to

[27] , wherein the mass ratio ((A) / (C)) of the amount of component (A) to the amount of component (C) is more preferably 3 or more and 10 or less.

[30] A hair cosmetic according to any one of the above [1] to

[27] , wherein the mass ratio ((A) / (C)) of the amount of component (A) to the amount of component (C) is more preferably 5 or more and 8 or less.

[31] A hair cosmetic composition according to any one of the above [1] to

[30] , wherein the mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is more preferably 0.03 to 0.4.

[32] A hair cosmetic according to any one of the above [1] to

[30] , wherein the mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is more preferably 0.04 to 0.35.

[0048]

[33] A hair cosmetic composition according to any one of the above [1] to

[32] , wherein component (D) preferably comprises a hydrocarbon group having 6 to 36 carbon atoms.

[34] A hair cosmetic composition according to any one of the above [1] to

[32] , wherein component (D) more preferably has a hydrocarbon group with 10 to 24 carbon atoms.

[35] A hair cosmetic according to any one of the above [1] to

[32] , wherein component (D) more preferably comprises a hydrocarbon group having 12 to 22 carbon atoms, and more preferably comprises a hydrocarbon group having 14 to 22 carbon atoms.

[36] A hair cosmetic according to any one of the above [1] to

[35] , wherein component (D) preferably comprises one or more selected from stearyl alcohol, cetanol, behenyl alcohol, and oleyl alcohol.

[37] A hair cosmetic according to any one of the above [1] to

[35] , wherein component (D) more preferably contains stearyl alcohol.

[38] A hair cosmetic according to any one of the above [1] to

[37] , wherein the content of component (D) is preferably 3 to 15% by mass.

[39] A hair cosmetic according to any one of the above [1] to

[37] , wherein the content of component (D) is more preferably 3.5 to 13% by mass.

[40] A hair cosmetic composition according to any one of the above [1] to

[37] , wherein the content of component (D) is more preferably 4 to 12% by mass.

[41] A hair cosmetic according to any one of the above [1] to

[40] , wherein the content of component (E) is preferably 30 to 90% by mass.

[42] A hair cosmetic according to any one of the above [1] to

[40] , wherein the content of component (E) is more preferably 35 to 90% by mass.

[43] A hair cosmetic according to any one of the above [1] to

[40] , wherein the content of component (E) is more preferably 40 to 90% by mass.

[44] A hair cosmetic according to any one of the above [1] to

[43] , wherein the content of oily components is preferably 1 to 10% by mass.

[45] A hair cosmetic according to any one of the above [1] to

[43] , wherein the content of oily components is more preferably 1 to 9% by mass.

[46] A hair cosmetic according to any one of the above [1] to

[43] , wherein the content of oily components is more preferably 1 to 8% by mass.

[47] A hair cosmetic composition according to any one of the above [1] to

[46] , wherein the viscosity at 30°C is preferably 6,000 to 130,000 mPa·s.

[48] The hair cosmetic according to any one of [1] to

[46] above, wherein the viscosity at 30° C. is more preferably 7000 to 120000 mPa·s.

[49] The hair cosmetic according to any one of [1] to

[46] above, wherein the viscosity at 30° C. is even more preferably 8000 to 110000 mPa·s.

[50] Melting point T m (° C) and the freezing point T f The hair cosmetic according to any one of [1] to

[49] above, wherein the degree of supercooling ΔT (° C), which is the difference from (° C), is 0° C or more and 2.50° C or less.

[51] Melting point T m (° C) and the freezing point T f The hair cosmetic according to any one of [1] to

[49] above, wherein the degree of supercooling ΔT (° C), which is the difference from (° C), is 0° C or more and 2.45° C or less.

[52] Melting point T m (° C) and the freezing point T f The hair cosmetic according to any one of [1] to

[49] above, wherein the degree of supercooling ΔT (° C), which is the difference from (° C), is 0° C or more and 2.40° C or less. Examples

[0049] Hereinafter, the present invention will be specifically described based on examples. Unless otherwise specified in the tables, the content of each component is represented by mass%.

[0050] [Examples 1 to 9, Comparative Examples 1 to 4] According to the formulations shown in Tables 1 to 2, each component was mixed by a conventional method to obtain each hair cosmetic. Using the obtained hair cosmetics, each measurement and evaluation was performed according to the following method. The results are shown in Tables 1 to 2.

[0051] <<Calculation of ΔT (degree of supercooling)>> About 13 mg of the obtained hair cosmetic was collected and filled into a sealed aluminum container (volume: 15 μL). Then, DSC measurement was performed in the range of -10° C to 85° C using a high-sensitivity differential scanning calorimeter (DSC7000X, manufactured by Hitachi High-Tech Science Corporation), and the transition temperature T to the liquid crystal phase was measured m (melting point of α-gel: ° C) and the crystallization temperature Tf The freezing point of the α-gel (°C) was determined. The obtained T m , and T f The value of was introduced into the above equation (x) to calculate the value of ΔT (degree of supercooling: °C). If the obtained value of ΔT (degree of supercooling: °C) is 2.50 °C or less, it is judged to be acceptable. The value of ΔT is preferably between 0 °C and 2.50 °C, more preferably between 0 °C and 2.45 °C, and even more preferably between 0 °C and 2.40 °C.

[0052] Viscosity measurement Approximately 100g of the obtained hair cosmetic was collected, filled into a glass bottle, and left to stand in a 30°C constant temperature bath for at least 2 hours. Next, if the viscosity of the hair cosmetic was 10,000 mPa·s or higher, it was measured using a B-type viscometer (TVB-10, manufactured by Toki Sangyo Co., Ltd.) under the conditions of spindle TC, rotation speed 10 rpm, and 1 minute. If the viscosity of the hair cosmetic was between 2,000 mPa·s and less than 10,000 mPa·s, it was measured using a BM-type viscometer (TV-10, manufactured by Toki Sangyo Co., Ltd.) under the conditions of rotor No. 3, rotation speed 12 rpm, and 1 minute. Furthermore, if the viscosity of the hair cosmetic was less than 2,000 mPa·s, it was measured using a BM-type viscometer (Toki Sangyo Co., Ltd., TV-10) under the conditions of rotor No. 2, rotation speed 12 rpm, and 1 minute. If the obtained viscosity value was between 3,000 mPa·s and 130,000 mPa·s, it was judged to be acceptable.

[0053] 《Mitigation of curl or undulation (calculation and evaluation of the mitigation rate)》 After washing 10g of curly hair strands with plain shampoo and drying them with a hairdryer to obtain the pre-treatment strands, the hair strand width (cm) of the pre-treatment strands at a length of 5cm from the ends was measured and used as the initial value. Next, 1g of plain shampoo was applied to the pre-treatment strands and lathered for 30 seconds, then rinsed with warm water for 30 seconds. Next, 1g of the hair cosmetic obtained above was applied to the Tres and allowed to sit for 30 seconds, then rinsed with warm water for 30 seconds to obtain the treated Tres. The obtained treated Tres was towel-dried, combed, and then dried with a hairdryer using a hand blow dryer. Subsequently, after brush blow-drying (6 strokes), the evaluation Tres was obtained. The width (cm) of the hair strands used for evaluation was measured at a length of 5cm from the ends of the hair, and the percentage of curl or wave reduction was calculated using the following formula (z). Rate of reduction of frizz or waviness (%) = (Width of hair strands used for evaluation / Width of hair strands used before treatment) × 100 ... (z)

[0054] Next, based on the obtained values ​​(%) for the mitigation rate of wave curvature or swell, the wave curvature or swell mitigation properties were evaluated according to the following criteria. Furthermore, the stronger the curl or wave, the wider the hair bundle, and the less the curl or wave, the narrower the hair bundle. Therefore, a smaller value for the curl or wave reduction rate (%) indicates a higher degree of curl or wave reduction. A: Very high mitigation of curl or swell (mitigation rate (z) is less than 75%) B: High mitigation of curl or swell (mitigation rate (z) is 75% or more and less than 80%) C: Low ability to mitigate kinks or swells (mitigation rate (z) is 80% or more but less than 85%) D: Very low ability to mitigate kinks or swells (mitigation rate (z) is 85% or higher)

[0055] Evaluation of the care effect on wet hair 30g of Japanese hair was washed with plain shampoo and 15g was added to the water. Then, 1mL of each of the resulting hair cosmetics was applied, and the feeling of care (good sensations such as softness, smoothness, and moisture) when massaged in by hand was evaluated on a 5-point scale according to the following criteria by a panel of 5 experts, and the average value was calculated. Furthermore, the evaluation results obtained show a positive correlation between ΔT (degree of supercooling) and the feeling of care on wet hair. In other words, it was confirmed that the value of ΔT (degree of supercooling) can serve as an indicator for evaluating the feeling of care on wet hair. 1: Does not feel like it's caring for you 2: Doesn't feel like much care is being taken care of. 3: It can't be said to give a feeling of care, nor can it be said that it doesn't give a feeling of care. 4: Has a slightly caring feel 5: It feels like it's caring.

[0056] [Table 1]

[0057] [Table 2]

[0058] *1: Cosmetic-grade concentrated glycerin A, ClogP value: -1.5384, manufactured by Kao Corporation. *2: Sorbitol #650, ClogP value: -2.046, manufactured by Mitsubishi Corporation Life Sciences Co., Ltd. *3: GE-IS(U), manufactured by Kao Corporation *4: Batyl alcohol, manufactured by Tokyo Chemical Industry Co., Ltd. *5: Farmin DM E-80, manufactured by Kao Corporation *6: Kotamin 2285E-E, manufactured by Kao Corporation. *7: NIKKOL amidoamine MPS, manufactured by Nikko Chemicals Co., Ltd. *8: Calcol 8098 (including Firmin), manufactured by Kao Corporation. *9: Calcol 6098, manufactured by Kao Corporation. *10: PURAC ULTRA PURE90, made by Corbion *11: Benzyl alcohol (perfume grade), manufactured by Valtris Specialty Chemicals (HQ) *12: DPG-RF, manufactured by Adeka Corporation

Claims

1. The following components (A) to (E): (A) Polyols having 3 or more hydroxyl groups in one molecule: 10% by mass or more (B) Alkyl glyceryl ether having a branched alkyl group (C) Cationic surfactant (D) Aliphatic alcohols (E) Water Hair cosmetic containing [ingredient].

2. The hair cosmetic composition according to claim 1, wherein the mass ratio ((A) / (B)) of the amount of component (A) to the amount of component (B) is 10 or more and 500 or less.

3. The hair cosmetic composition according to claim 1 or 2, wherein the mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is 0.02 or more and 0.45 or less.

4. The hair cosmetic composition according to claim 1 or 2, wherein the content of component (B) is 0.05% by mass or more and 3% by mass or less.

5. The hair cosmetic composition according to claim 1 or 2, wherein the mass ratio ((A) / (C)) of the amount of component (A) to the amount of component (C) is 1 or more and 18 or less.

6. The hair cosmetic composition according to claim 1 or 2, wherein the content of component (A) is 10% by mass or more and 70% by mass or less.

7. The hair cosmetic composition according to claim 1 or 2, wherein component (A) comprises one or more selected from glycerin, sorbitol, and polyethylene glycol.

8. The hair cosmetic composition according to claim 1 or 2, wherein component (B) comprises a branched alkyl group having 8 to 22 carbon atoms.

9. The hair cosmetic composition according to claim 1 or 2, wherein component (C) comprises one or more selected from alkyltrimethylammonium salts, alkoxyalkyltrimethylammonium salts, dialkyldimethylammonium salts, alkoxyalkyldimethylamines and their salts, and alkylamidealkyldimethylamines and their salts.

10. The hair cosmetic composition according to claim 1 or 2, wherein the content of component (C) is 1.5 to 10% by mass.

11. The hair cosmetic composition according to claim 1 or 2, wherein component (D) comprises one or more selected from stearyl alcohol, cetanol, behenyl alcohol, and oleyl alcohol.

12. The hair cosmetic composition according to claim 1 or 2, comprising one or more components (D) having a content of 3 to 15% by mass.

13. The hair cosmetic composition according to claim 1 or 2, wherein the viscosity at 30°C is 6,000 to 130,000 mPa·s.

14. Melting point T ｍ (°C) and freezing point T ｆ The hair cosmetic composition according to claim 1 or 2, wherein the degree of supercooling ΔT (°C), which is the difference from (°C), is 0°C or more and 2.50°C or less.

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