Hair cosmetic

Abstract

To provide a hair cosmetic which can be rinsed off in a short time while having excellent smoothness of hair during rinsing, leaves no stickiness on hair after rinsing, can impart a smooth feeling after drying and further has excellent durability of a smooth feeling under low humidity conditions.SOLUTION: There is provided a hair cosmetic comprising the following components (A) to (E). (A) 0.5 to 7 mass% of a cationic surfactant. (B) 1 to 20 mass% of a linear alcohol having 14 to 24 carbon atoms. (C) 1 to 30 mass% of a polyhydric alcohol having 3 to 6 carbon atoms. (D) 0.0001 to 10 mass% of a vegetable oil. (E) 0.00001 to 0.1 mass% of one or two or more extracts selected from Portulaca plant extract, Moraceae plant extract and Labiatae plant extract.SELECTED DRAWING: None

Description

[Technical Field]

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

[0002] In our daily lives, hair is exposed to various damaging factors, such as ultraviolet rays from sunlight, heat from hair dryers, chemical treatments such as perms and hair coloring, and friction from washing and brushing. Hair damaged by these factors becomes dry, difficult to run your fingers through, and loses its luster. In order to maintain hair health under these circumstances, hair cosmetics such as hair conditioners and hair treatments are used, and these hair cosmetics provide various conditioning effects, such as moisturizing hair and improving runnability and luster.

[0003] Hair cosmetics such as hair conditioners are usually applied to hair after shampooing in the bathroom and then rinsed off. However, in order to enhance the immediate feeling of effectiveness, not only the feel of hair after drying but also the feel of hair when rinsing is important. For example, Patent Documents 1 and 2 propose hair cosmetics that provide excellent hair smoothness during rinsing. However, these hair cosmetics sometimes take a long time to rinse off or leave a sticky feeling after rinsing. Therefore, there is a need for the development of hair cosmetics that provide smoothness during rinsing, good rinsing properties, and no sticky feeling after rinsing. Patent Document 3 proposes a hair cosmetic that provides excellent hair smoothness during rinsing but does not leave a sticky feeling after rinsing. Furthermore, Patent Document 4 proposes a hair cosmetic that provides excellent finger-combability during application and over time after application, a natural feeling of manageability, and excellent damage care.

[0004] For example, by using various hair cosmetics as described in Patent Documents 1 to 4, it is thought that the texture of hair, such as manageability and moisturized feel at the end, can be improved, but there are also cases where a smooth feel is desired as a texture of hair. A smooth feel means a state in which the hair does not feel uneven on the surface, is not sticky, and has a good slipperiness.

[0005] As a hair cosmetic composition capable of imparting such a smooth feeling to hair, for example, Patent Document 5 proposes a hair cosmetic composition that provides a rich feeling upon application, makes hair smooth during rinsing, and is effective in imparting suppleness, smoothness, and moisturization to hair after drying. However, although the composition imparts a smooth feeling to hair, the smooth feeling does not last long enough in low-humidity conditions such as those in summer when air conditioners are used. In recent years, with rising temperatures, the frequency of air conditioner use in summer has increased, and people are spending more time in low-humidity conditions. Therefore, there has been a demand for a hair cosmetic composition that can maintain a smooth feeling even in low-humidity conditions. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2018-2638 [Patent Document 2] Japanese Patent Application Publication No. 2023-85101 [Patent Document 3] Japanese Patent Application Publication No. 2020-125249 [Patent Document 4] Japanese Patent Application Laid-Open No. 2014-214150 [Patent Document 5] JP 2019-119700 A Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, an object of the present invention is to provide a hair cosmetic that can be rinsed off in a short time while providing excellent hair smoothness during rinsing, does not leave a sticky feeling on the hair after rinsing, can impart a smooth feeling after drying, and further has excellent durability of the smooth feeling even under low humidity conditions. [Means for solving the problem]

[0008] The present inventors have conducted extensive research in light of the above-mentioned problems and have found that the above-mentioned problems can be solved by incorporating five specific components at specific content ranges. That is, the present invention relates to a hair cosmetic composition containing the following components (A) to (E):

[0009] (A) 0.5 to 7 mass% of a cationic surfactant (B) 1 to 20% by mass of a linear alcohol having 14 to 24 carbon atoms (C) 1 to 30% by mass of a polyhydric alcohol having 3 to 6 carbon atoms (D) 0.0001~10% by mass of vegetable oil (E) 0.00001 to 0.1 mass% of one or more extracts selected from Portulacaceae plant extracts, Moraceae plant extracts, and Lamiaceae plant extracts [Effects of the Invention]

[0010] The hair cosmetic composition of the present invention can be rinsed off in a short time while providing excellent smoothness to hair during rinsing, does not leave a sticky feeling on the hair after rinsing, can impart a smooth feeling after drying, and further has excellent durability of the smooth feeling even under low humidity conditions. DETAILED DESCRIPTION OF THE INVENTION

[0011] In this specification, numerical ranges defined using the symbol "to" are inclusive of both the upper and lower limits. For example, "2 to 4" means 2 or more and 4 or less. Furthermore, when a concentration or amount is specified, any higher concentration or amount can be associated with any lower concentration or amount. For example, the descriptions "2 to 10% by mass" and "preferably 4 to 8% by mass" also encompass the descriptions "2 to 4% by mass," "2 to 8% by mass," "4 to 10% by mass," and "8 to 10% by mass."

[0012] The hair cosmetic composition according to the present invention contains the following components (A), (B), (C), (D), and (E) in predetermined content ranges. Each component will be described below.

[0013] [Component (A)] The component (A) applicable to the embodiments of the present invention is not particularly limited as long as it is a cationic surfactant, and examples thereof include cationic surfactants having an alkyl group having 16 to 24 carbon atoms, as represented by the following formula (1), and tertiary amidoamine surfactants, as represented by the following formula (2), which are usually used in the form of a salt after being neutralized by the addition of an acid.

[0014] [ka]

[0015] (In formula (1), R 1 represents an alkyl group having 16 to 24 carbon atoms, and R 2 represents an alkyl group having 16 to 24 carbon atoms or an alkyl group having 1 to 3 carbon atoms which may be substituted with a hydroxy group, and R 3 and R 4 each independently represents an alkyl group having 1 to 3 carbon atoms which may be substituted by a hydroxy group, and X - indicates an anion.)

[0016] [ka]

[0017] (In formula (2), R 5 represents an alkyl group having 15 to 23 carbon atoms, and m represents an integer of 2 to 4.

[0018] The cationic surfactant having an alkyl group having 16 to 24 carbon atoms, represented by formula (1), is described in detail below.

[0019] R in Equation (1) 1 R may be an alkyl group having 16 to 24 carbon atoms, preferably an alkyl group having 18 to 22 carbon atoms. The structure of the alkyl group may be linear or branched, but is preferably linear. Specific examples of the alkyl group include a cetyl group, a stearyl group, and a behenyl group. 1is more preferably a linear alkyl group having 18 to 22 carbon atoms.

[0020] R in Equation (1) 2 R may be an alkyl group having 16 to 24 carbon atoms or an alkyl group having 1 to 3 carbon atoms which may be substituted with a hydroxy group. 2 When R is an alkyl group having 16 to 24 carbon atoms, 1 It is preferable that the structure is similar to that of R. 2 When the alkyl group is an alkyl group having 1 to 3 carbon atoms which may be substituted with a hydroxy group, the alkyl group may be substituted with a hydroxy group or may not be substituted with a hydroxy group, but an unsubstituted alkyl group is preferred. When the alkyl group is substituted with a hydroxy group, the number of substitutions is not particularly limited.

[0021] R in Equation (1) 3 , R 4 are each independently an alkyl group having 1 to 3 carbon atoms which may be substituted with a hydroxy group. 2 It is preferable that the structure is similar to that of the first embodiment.

[0022] R in formula (1) 2 ~R 4 Specific examples of the alkyl group having 1 to 3 carbon atoms which may be substituted with a hydroxy group include a methyl group, an ethyl group, a propyl group, a hydroxymethyl group, and a hydroxyethyl group, and among these, a methyl group and an ethyl group are preferred.

[0023] X in formula (1) -is an anion, and examples thereof include halide ions such as chloride ion and bromide ion; alkyl sulfate ions having 1 to 3 carbon atoms such as methosulfate ion and ethosulfate ion; alkyl phosphate ions having 1 to 3 carbon atoms such as methophosphate ion and ethosulfate ion; alkyl carbonate ions having 1 to 3 carbon atoms such as methocarbonate ion; acylate ions such as acetate ion, citrate ion, lactate ion and glycolate ion; nitrate ion; sulfate ion, etc. Among these, chloride ion, bromide ion, methosulfate ion, ethosulfate ion, methophosphate ion, ethosulfate ion, or methocarbonate ion is preferred, and chloride ion or bromide ion is more preferred.

[0024] The tertiary amidoamine surfactant represented by formula (2) will be explained below.

[0025] R in Equation (2) 5 R may be an alkyl group having 15 to 23 carbon atoms, preferably an alkyl group having 17 to 21 carbon atoms. The structure of the alkyl group may be linear or branched, but is preferably linear. Specific examples of the alkyl group include a cetyl group, a stearyl group, and a behenyl group. 5 is more preferably a linear alkyl group having 17 to 21 carbon atoms.

[0026] In formula (2), m may be an integer of 2 to 4, and is not particularly limited.

[0027] Specific examples of surfactants represented by formula (1) and formula (2) include stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, stearyltrimethylammonium bromide, behenyltrimethylammonium bromide, distearyldimethylammonium chloride, stearamidopropyldimethylamine, behenamidopropyldimethylamine, stearamidoethyldiethylamine, behenamidoethyldiethylamine, etc. Among these, in terms of hair smoothness during rinsing, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, stearamidopropyldimethylamine, and behenamidopropyldimethylamine are preferred, with stearyltrimethylammonium chloride and stearamidopropyldimethylamine being particularly preferred.

[0028] The cationic surfactants represented by formula (1) and formula (2) can be produced by known methods, or commercially available products may be used.

[0029] The component (A) may be used alone or in combination of two or more.

[0030] The content of component (A) is 0.5 to 7% by mass, preferably 0.7 to 5% by mass, and more preferably 1 to 4% by mass, based on the total amount of the hair cosmetic. If the content of component (A) is less than 0.5% by mass, hair may not be sufficiently smooth when rinsing. If the content of component (A) is more than 7% by mass, rinsing performance and the lack of stickiness of hair after rinsing may be insufficient.

[0031] [(B) component] Component (B) applicable to the embodiment of the present invention may be a straight-chain alcohol having 14 to 24 carbon atoms. The structure of the alcohol is not particularly limited as long as it is a straight-chain structure, and may be monovalent or polyvalent, but a monohydric alcohol in which one hydrogen atom of a straight-chain aliphatic hydrocarbon is substituted with a hydroxy group is preferred. Furthermore, the aliphatic hydrocarbon group may be a saturated aliphatic hydrocarbon group or an unsaturated aliphatic hydrocarbon group, but a saturated aliphatic hydrocarbon group is preferred. A monohydric alcohol with a straight-chain saturated hydrocarbon group is particularly preferred. Specific examples include myristyl alcohol, cetanol, stearyl alcohol, and behenyl alcohol.

[0032] The component (B) may be used alone or in combination of two or more.

[0033] The content of component (B) is 1 to 20% by mass, preferably 2 to 17% by mass, and more preferably 3 to 15% by mass, based on the total amount of the hair cosmetic. If the content of component (B) is less than 1% by mass, hair may not be sufficiently smooth when rinsing. If the content of component (B) is more than 20% by mass, rinsing may be insufficient.

[0034] [(C) component] Component (C) applicable to the embodiment of the present invention may be any polyhydric alcohol having 3 to 6 carbon atoms. Furthermore, from the viewpoint of suppressing stickiness of hair after rinsing, the valence is preferably 2 to 4. The polyhydric alcohol may be used alone or in combination of two or more. Of these, one or more selected from dihydric alcohols having 3 to 6 carbon atoms, trihydric alcohols having 3 to 6 carbon atoms, and tetrahydric alcohols having 3 to 6 carbon atoms are preferred. Such alcohols are not particularly limited as long as they are commonly used in cosmetics, and examples include glycols and glycerins having 3 to 6 carbon atoms.

[0035] Examples of glycols include propylene glycol, dipropylene glycol, 1,3-propanediol, isoprene glycol, 1,3-butylene glycol, 1,2-pentanediol, 1,2-hexanediol, etc. Examples of glycerins include glycerin, diglycerin, etc.

[0036] Of these, 1,3-propanediol, 1,3-butylene glycol, and glycerin are preferred.

[0037] The content of component (C) is 1 to 30% by mass, preferably 1.5 to 28% by mass, and more preferably 2 to 26% by mass, based on the total amount of the hair cosmetic. If the content of component (C) is less than 1% by mass, hair may not be sufficiently smooth when rinsing. If the content of component (C) is more than 30% by mass, rinsing performance and lack of stickiness when rinsing may be insufficient.

[0038] [(D) component] Component (D) applicable to embodiments of the present invention is a vegetable oil. There are no particular limitations on the vegetable oil, as long as it is one that is commonly used in cosmetics. Examples include olive oil (olive fruit oil), camellia oil (camellia seed oil), shea butter, almond oil, safflower oil, sunflower oil (sunflower seed oil), hybrid sunflower oil, soybean oil, cottonseed oil, sesame oil, corn oil, rapeseed oil, rice bran oil, rice germ oil, grape seed oil, avocado oil, macadamia nut oil (macadamia seed oil), castor oil, coconut oil, palm oil, hydrogenated palm oil, evening primrose oil, cocoa butter, and squalane.

[0039] Preferred vegetable oils are olive oil (olive fruit oil), camellia oil (camellia seed oil), shea butter, safflower oil, sunflower oil (sunflower seed oil), hybrid sunflower oil, rice bran oil, macadamia nut oil (macadamia seed oil), castor oil, coconut oil, palm oil, hydrogenated palm oil, and squalane, of which olive oil (olive fruit oil), camellia oil (camellia seed oil), safflower oil, sunflower oil (sunflower seed oil), hybrid sunflower oil, macadamia nut oil (macadamia seed oil), palm oil, hydrogenated palm oil, and squalane are more preferred, with squalane being even more preferred.

[0040] The component (D) may be used alone, but it is preferable to use two or more types in combination.

[0041] The content of component (D) is 0.0001 to 10% by mass, preferably 0.0005 to 9% by mass, and more preferably 0.001 to 8% by mass, based on the total amount of the hair cosmetic. If the content of component (D) is less than 0.0001% by mass, the smooth feeling after drying and the durability of the smooth feeling under low humidity conditions may be insufficient. If the content of component (D) is more than 10% by mass, the lack of stickiness of hair after rinsing and the smooth feeling after drying may be insufficient.

[0042] [(E) component] Component (E) applicable to the embodiment of the present invention is one or more extracts selected from the group consisting of extracts of plants of the Portulacaceae family, extracts of plants of the Moraceae family, and extracts of plants of the Labiatae family.

[0043] Portulacaceae plant extracts are extracts of dicotyledonous plants (mostly succulent creeping annual herbs) of the Portulacaceae family. Examples of dicotyledonous plants of the Portulacaceae family include common purslane (Portulaca oleracea L.), common purslane (Portulaca oleracea L. var. sativa DC), portulaca garndiflora Hook, common chickweed (Montia Fontana L. var. lamprosperma Ledeb), and creeping zinnia (Talinum crassifolium Willd). Among these, common purslane and common purslane are preferred.

[0044] The extraction method is not particularly limited. For example, the leaves, stems, roots, flowers, seeds, or whole plants of dicotyledonous plants of the genus Portulaca in the family Portulacaceae can be crushed and dried as necessary, followed by heating under reflux or immersion in a solvent. Examples of extraction solvents include one or more selected from hydrocarbons, esters, ketones, ethers, halogenated hydrocarbons, alcohols, and water. Preferred are one or more solvents selected from water, ethanol, propylene glycol, isopropyl alcohol, 1,3-butylene glycol, and ethyl acetate, with water or 1,3-butylene glycol being more preferred. The Portulacaceae plant extract may be the extract itself, a concentrate thereof, or a mixture of the extract or concentrate with a modified solution. The Portulacaceae plant extract may be prepared by the aforementioned method or commercially available. Commercially available products include, for example, "POTURACA EXTRACT" manufactured by Bioland Ltd.

[0045] The moraceae plant extract is an extract of the genus Morus (Morus) of the family Moraceae. Examples of moraceae plants include, but are not limited to, Morus alba (Morus alba L.), Morus australis (Morus australis Poir), Morus bombycis (Morus bombycis Koidz.), Morus latifolia (Morus latifolia (Morus) Poir.), Morus mongolica (Morus mongolica (Morus) Schneid.), Morus nigra (Morus nigra L.), and Morus rubra (Morus rubra L.). Among these, Morus alba (Morus alba L.) is preferred.

[0046] Common extraction methods are used. For example, various parts of a moraceous plant, whether dried or undried, are immersed in an extraction solvent, stirred as necessary, and then filtered to obtain an extract. The parts of a moraceous plant used for extraction are not particularly limited, but root bark is preferably used. The root bark is not particularly limited, and examples include root bark containing the periderm, periderm, and root bark from which the periderm has been removed (Moroccoides morifolia), with periderm-containing root bark being preferred. Methods for drying moraceous plants include air drying, warm drying, and freeze-drying. The moraceous plant may be appropriately shredded from the perspective of extraction efficiency. The number of extractions is not particularly limited, but it is preferable to perform extraction once using a predetermined amount of water or aqueous solvent.

[0047] Examples of solvents used for extraction include water and aqueous solvents. Examples of aqueous solvents include esters such as ethyl acetate; ketones such as acetone; ethers such as polyhydric alcohol alkyl ethers such as diethyl ether, tetrahydrofuran, and diethylene glycol ether; and alcohols such as lower alcohols and polyhydric alcohols. Among these, from the viewpoints of safety and extraction efficiency, water; lower alcohols such as methanol, ethanol, propanol, and isopropanol; and polyhydric alcohols such as propylene glycol, dipropylene glycol, 1,3-butylene glycol, and glycerin are preferred, with water, ethanol, and 1,3-butylene glycol being more preferred.

[0048] The obtained extract may be used as is, or may be concentrated by distilling off the solvent, and if necessary, purified by column chromatography, solvent fractionation, or the like, and then dried, etc. To facilitate handling, the extract may be diluted with water or a polyhydric alcohol such as glycerin or 1,3-butylene glycol.

[0049] The Mulberry plant extract may be one obtained as described above, or a commercially available product may be used. An example of a commercially available product is "Mulberry Extract" manufactured by NOF Corporation. This product, "Mulberry Extract," is an extract obtained by extracting and drying the root bark (mulberry bark) containing the periderm of the mulberry tree using ethanol as an extraction solvent, and then diluting it with water and 1,3-butylene glycol.

[0050] The Lamiaceae plant extract is an extract from the genus Lavandula or Salvia in the Lamiaceae family. Examples of Lamiaceae plants include, but are not limited to, common lavender (L. angustifolia), spike lavender (L. latifolia), lavandin (L. x intermedia), and rosemary (S. rosmarinus). Of these, common lavender (L. angustifolia), spike lavender (L. latifolia), and rosemary (S. rosmarinus) are preferred.

[0051] Conventional extraction methods are used, such as immersing various parts of Labiatae plants in a solvent. During extraction, the plants may be used as they are, or may be crushed or dried before use. Crushing is preferred, and drying is even more preferred. While immersing in the extraction solvent, the plants may be stirred or allowed to stand. The extraction procedure may be performed once, or may be repeated two or more times to obtain a highly concentrated extract.

[0052] The solvent used for extraction is not particularly limited, and examples thereof include water; lower monohydric alcohols such as methanol, ethanol, propanol, and butanol; polyhydric alcohols such as propylene glycol, dipropylene glycol, butylene glycol, and glycerin; esters such as methyl acetate and ethyl acetate; ketones such as acetone and methyl ethyl ketone; ethers such as diethyl ether and tetrahydrofuran; halogenated hydrocarbons such as chloroform and carbon tetrachloride; and hydrocarbons such as hexane, heptane, and cyclohexane. Among these, polar solvents are preferred, and water and ethanol are more preferred. The solvent may be used alone or in a mixture of two or more solvents.

[0053] The procedure for the extraction method is not particularly limited, and examples include a procedure in which the Labiatae plant to be used for extraction is immersed in the solvent at 0 to 120°C for 1 hour to 7 days, followed by filtration to obtain an extract. As mentioned above, the extraction procedure can be performed one or more times as needed, and when repeated, the conditions can be changed as needed. The obtained extract can be used as a Labiatae plant extract as is, or it can be used as a Labiatae plant extract after dilution, concentration, freeze-drying, purification, etc.

[0054] The Lamiaceae plant extract may be extracted by the above-mentioned extraction method, or may be commercially available.

[0055] The component (E) may be used alone, but it is preferable to use two or more types in combination, and it is even more preferable to use three or more types in combination.

[0056] The content of component (E) is 0.00001 to 0.1% by mass, preferably 0.00002 to 0.05% by mass, and more preferably 0.00003 to 0.01% by mass, based on the total amount of the hair cosmetic. If the content of component (E) is less than 0.00001% by mass, the duration of the smooth feeling under low humidity conditions may be insufficient. If the content of component (E) is more than 0.1% by mass, the rinsing performance and the smooth feeling after drying may be insufficient.

[0057] [Other ingredients] The hair cosmetic composition according to the embodiment of the present invention may contain other ingredients in addition to the above-mentioned components (A) to (E) to the extent that the effects of the present invention are not impaired. The other ingredients are those commonly used in cosmetics, such as higher fatty acids and their triglycerides, ester oils, animal oils, vitamins, sequestering agents, thickeners, colorants, pigments, fragrances, pH adjusters, solvents such as water, amino acids, sugar compounds, plant extracts (excluding components (D) and (E)), etc.

[0058] The hair cosmetic composition according to the present invention preferably has a pH of 4 to 7, which not only provides a higher effect but also provides excellent stability over time. The pH can be adjusted as needed using a pH adjuster. Examples of such pH adjusters include citric acid, sodium citrate, and lactic acid.

[0059] The hair cosmetic composition according to the embodiment of the present invention can be used as a hair conditioner, hair treatment, hair rinse, hair mask, hair milk, hair cream, etc. Furthermore, these can be produced according to the usual method depending on the intended use. [Example]

[0060] The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to the following examples.

[0061] [Examples 1 to 10, Comparative Examples 1 to 5] Hair cosmetics of Examples 1 to 10 and Comparative Examples 1 to 5 were prepared by blending the ingredients in the compositions shown in Tables 1 and 2. The pH of the hair cosmetics was adjusted to 4.0 to 5.0 using citric acid or lactic acid and sodium citrate. Each hair cosmetic was evaluated using the following evaluation method. The values ​​in Tables 1 and 2 are in mass%.

[0062] (1) Smoothness of hair when rinsing Twenty women (aged 25-40) were used as panelists, and 5 g of each hair cosmetic was applied to wet hair. After rinsing with hot water, the smoothness of the hair was evaluated and scored as follows. The total score was then used to rank the hair cosmetic on a four-point scale from "◎" to "×." A score of 20 or more, 29 or less, was considered excellent for the smoothness of the hair after rinsing, and a score of 30 or more was considered particularly excellent.

[0063] 2 points: Hair felt smooth. 1 point: Hair felt somewhat smooth. 0 points: There was some catching when rinsing.

[0064] ◎: Total score is 30 points or more ○: The total score is 20 points or more and 29 points or less △: The total score is between 10 and 19 points ×: The total score is 9 points or less

[0065] (2) Easy rinsing At the same time as the evaluation of (1), the ease of rinsing the applied hair cosmetics when rinsed off with hot water was evaluated and scored as follows: The total score was used to evaluate the rinsing ease on a four-point scale from "◎" to "×" as shown below, with hair cosmetics scoring 20 points or more and 29 points or less being excellent, and hair cosmetics scoring 30 points or more being particularly excellent.

[0066] 2 points: I felt that the slimy feeling disappeared quickly. 1 point: I felt that the slimy feeling disappeared rather quickly. 0 points: I felt that the slimy feeling took a long time to disappear.

[0067] ◎: Total score is 30 points or more ○: The total score is 20 points or more and 29 points or less △: The total score is between 10 and 19 points ×: The total score is 9 points or less

[0068] (3) No stickiness of hair after rinsing Twenty women (aged 25-40) were used as panelists, and 5 g of each hair cosmetic was applied to wet hair. After rinsing with hot water for 60 seconds, the hair was evaluated for stickiness and given a score as shown below. The total score was then used to rank the hair on a four-point scale from "◎" to "×." A score of 20 or more, 29 or less, was considered excellent for the hair cosmetic, and a score of 30 or more was considered particularly excellent for the hair cosmetic for stickiness after rinsing.

[0069] 2 points: Hair did not feel sticky. 1 point: Hair felt slightly sticky. 0 points: Hair felt sticky.

[0070] ◎: Total score is 30 points or more ○: The total score is 20 points or more and 29 points or less △: The total score is between 10 and 19 points ×: The total score is 9 points or less

[0071] (4) Smooth feeling after drying After the evaluations of (1) to (3), the smoothness of the hair after drying was evaluated and scored as follows: Then, the total score was used to evaluate the smoothness of the hair after drying on a four-point scale from "◎" to "×" as follows. A hair cosmetic product with a score of 20 or more and a score of 29 or less was judged to be excellent, and a hair cosmetic product with a score of 30 or more was judged to be particularly excellent.

[0072] 2 points: The surface of the hair felt smooth. 1 point: The surface of the hair felt slightly smooth. 0 points: The surface of the hair felt rough.

[0073] ◎: Total score is 30 points or more ○: The total score is 20 points or more and 29 points or less △: The total score is between 10 and 19 points ×: The total score is 9 points or less

[0074] (5) Durability of smooth feeling in low humidity environments After the evaluations of (1) to (4), the durability of the smooth feeling in a low-humidity environment (temperature: 25°C, humidity: 25%) was evaluated and scored as follows: The total score was then used to evaluate the durability of the smooth feeling in a low-humidity environment on a four-point scale from "◎" to "×" as follows. A score of 20 or more, 29 or less, was judged as an excellent hair cosmetic, and a score of 30 or more was judged as an especially excellent hair cosmetic for the durability of the smooth feeling in a low-humidity environment.

[0075] 2 points: After 3 hours, the surface of the hair felt smooth. 1 point: After 3 hours, the surface of the hair felt slightly smooth. 0 points: After 3 hours, the surface of the hair felt dull.

[0076] ◎: Total score is 30 points or more ○: The total score is 20 points or more and 29 points or less △: The total score is between 10 and 19 points ×: The total score is 9 points or less

[0077] [Table 1]

[0078] [Table 2]

[0079] The components (A) to (E) shown in Tables 1 and 2 were as follows: [Component (A)] Stearyltrimethylammonium chloride (cation AB-250AQ, NOF Corporation) Stearamidopropyl dimethylamine (Catinal MPAS, manufactured by Toho Chemical Industry Co., Ltd.) [(B) component] Cetyl alcohol (Kalcol 6098, manufactured by Kao Corporation) Stearyl alcohol (Kalcol 8098, manufactured by Kao Corporation) [(C) component] Glycerin (RG-S, manufactured by NOF Corporation) 1,3-butylene glycol (1,3-butylene glycol, manufactured by Daicel Corporation) [(D) component] Olive oil (refined olive oil, manufactured by DCOOP Oreo Monterreal, SL) Squalane (NIKKOL Sugar Squalane, manufactured by Nikko Chemicals Co., Ltd.) [(E) component] Portulaca extract (manufactured by Hyundai Bioland Co., Ltd.) · Morus alba root bark extract (Morcus hakuhi extract, manufactured by NOF Corporation) Lavender flower extract (organic lavender extract BG-50, manufactured by Koei Kogyo Co., Ltd.) Rosemary leaf extract (organic rosemary extract BG-50, manufactured by Koei Kogyo Co., Ltd.)

[0080] As shown in Table 1, each of the hair cosmetics of Examples 1 to 10 was evaluated as a hair cosmetic that left hair smooth during rinsing, had good rinsing properties, was not sticky after rinsing, and was able to impart a smooth feeling to hair after drying, and further, was excellent in maintaining the smooth feeling even under low humidity conditions. On the other hand, the hair cosmetics of Comparative Examples 1 to 5, which do not satisfy any of the essential requirements of the present invention, were not found to be sufficiently effective in all evaluation items, as shown below. The hair cosmetic composition of Comparative Example 1, in which the content of component (A) was outside the specified range, was evaluated as being insufficient in terms of rinsing properties and lack of stickiness on hair after rinsing. The hair cosmetic composition of Comparative Example 2, in which the content of component (B) was outside the specified range, was evaluated as having insufficient rinsing properties. The hair cosmetic composition of Comparative Example 3, which did not contain component (C), was evaluated as leaving hair with insufficient smoothness upon rinsing. The hair cosmetic composition of Comparative Example 4, which did not contain component (D), was evaluated as having insufficient smooth feeling after drying and insufficient durability of smooth feeling under low humidity conditions. The hair cosmetic composition of Comparative Example 5, which did not contain component (E), was evaluated as not providing sufficient long-lasting smooth feeling under low humidity conditions.

[0081] Other formulation examples of the hair cosmetic composition according to the embodiment of the present invention will be given below.

[0082] [Example 11] (Formulation example) The hair cosmetic of Example 11 was prepared by blending the components in the composition shown in Table 3.

[0083] [Table 3]

[0084] [Example 12] (Formulation example) The hair cosmetic of Example 12 was prepared by blending the components in the composition shown in Table 4.

[0085] [Table 4]

[0086] [Example 13] (Formulation example) The components were blended in the composition shown in Table 5 to prepare the hair cosmetic of Example 13.

[0087] [Table 5]

[0088] The hair cosmetics obtained in Examples 11 to 13 were evaluated in the same manner as described above for smoothness of hair during rinsing, ease of rinsing, lack of stickiness of hair after rinsing, smooth feeling after drying, and duration of smooth feeling under low humidity. All of these properties were found to be excellent, and good results were obtained.

Claims

[Claim 1] A hair cosmetic composition containing the following components (A) to (E): (A) 0.5 to 7% by mass of a cationic surfactant (B) 1 to 20% by mass of a linear alcohol having 14 to 24 carbon atoms (C) 1 to 30% by mass of a polyhydric alcohol having 3 to 6 carbon atoms (D) 0.0001 to 10% by mass of vegetable oil (E) 0.00001 to 0.1 mass% of one or more extracts selected from the group consisting of Portulacaceae plant extracts, Moraceae plant extracts, and Lamiaceae plant extracts

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