JP2014114223A - Method for producing hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a hair cosmetic which is excellent in balance between ease of takeout from a container and moderate viscosity when the hair cosmetic is applied to a wet hair with water.SOLUTION: The present invention relates to the hair cosmetic which contains the following components (a) to (d): (a) a cationic surfactant; (b) 12-28C aliphatic alcohol; (c) aromatic alcohol; and (d) water; and the method for producing the hair cosmetic which comprises: a step of obtaining a liquid emulsion by mixing and emulsifying an oil phase containing the component (a) and the component (b) and an aqueous phase containing the component (d); and a step of cooling the liquid emulsion at a temperature of less than the emulsification temperature of the liquid emulsion and 35°C or more, thereafter, adding the component (c) and mixing them.

Description

  The present invention relates to a method for producing a hair cosmetic.

  Various hair cosmetics such as rinses, conditioners, and treatments are used to impart smoothness to hair and improve touch. Conventionally, hair cosmetics in which a cationic surfactant and an oil such as a higher alcohol are blended and emulsified are known. As such a hair cosmetic, for example, Patent Document 1 describes a hair cosmetic containing a specific amidoamine compound or a salt thereof, a higher alcohol, an organic solvent, and a cationic surfactant. Patent Document 2 describes a hair cosmetic containing a specific hydroxy ether cation, a higher alcohol, a hair repair agent, an aromatic alcohol, and the like.

  In recent years, there is an increasing need for a good viscosity at the time of rinsing from the time of application of the hair cosmetic, that is, a good viscosity of the hair cosmetic when applied to water wet with water (diluted with water). However, if the viscosity of the hair cosmetic is increased in order to obtain a good viscosity at the time of dilution, there is a problem that it is difficult to remove the hair cosmetic from the container.

JP 2003-81780 A JP 2010-13405 A

  The present invention relates to a method for producing a hair cosmetic that has an excellent balance between ease of taking out from a container and appropriate viscosity when applied to water wetted with water.

  The present invention comprises (a) a cationic surfactant, (b) an aliphatic alcohol having 12 to 28 carbon atoms, (c) an aromatic alcohol and (d) water, and comprises component (a) and component (b). And a step of mixing a water phase containing the component (d) and emulsifying to obtain a liquid emulsion, and cooling the liquid emulsion at a temperature below 35 ° C. below the emulsification temperature of the liquid emulsion. And a step of adding and mixing the component (c) later.

  According to the production method of the present invention, it is possible to obtain a hair cosmetic excellent in the balance between ease of taking out from a container and appropriate viscosity when applied to water wet with water.

  Hereinafter, embodiments of the present invention will be described.

  Examples of the component (a) cationic surfactant used in the present invention include tertiary amine compounds and quaternary ammonium salts. As the tertiary amine compound, a salt formed with an organic acid and / or an inorganic acid may be used, or a salt may be formed in the composition together with a pH adjuster such as an organic acid. As the tertiary amine compound, a compound represented by the following general formula (1) is preferable.

In the general formula (1), R ¹¹ is a linear or branched chain which may be divided by a functional group represented by —OCO— or —COO— having 8 to 35 carbon atoms, or substituted with —OH. An alkyl group, an alkenyl group, or an aliphatic acyloxy (polyethoxy) ethyl group; R ¹² represents an alkyl group or hydroxyalkyl group having 1 to 22 carbon atoms, or a polyoxyethylene group having a total number of added moles of 10 or less, and the two R ¹² may be the same or different.

  The tertiary amine compound preferably includes one or more compounds selected from the following tertiary amine compounds (i) to (iii).

(I) hydroxy ether alkylamine

In the general formula (2), R ¹⁷ represents a linear or branched alkyl group or alkenyl group having 6 to 24 carbon atoms. R ¹⁸ and R ¹⁹ may be the same or different and each represents an alkyl group having 1 to 6 carbon atoms or — (AO) _f H (A represents an alkylene group having 2 to 4 carbon atoms, and f is 1 or more. The number is 6 or less, and f A's may be the same or different, and the arrangement thereof is arbitrary. e represents a number from 1 to 5.

  Specific examples include hexadecyloxy (2-hydroxypropyl) dimethylamine, octadecyloxy (2-hydroxypropyl) dimethylamine, or a mixture thereof.

(Ii) Etheramine Examples include compounds represented by the following general formula (3).

In the general formula (3), R ²⁰ represents a linear or branched alkyl group or alkenyl group having 6 to 24 carbon atoms. R ²¹ and R ²² may be the same or different and each represents an alkyl group having 1 to 6 carbon atoms or — (AO) _g H (A represents an alkylene group having 2 to 4 carbon atoms, and g is 1 or more. A number of 6 or less, and g A may be the same or different, and the arrangement thereof is arbitrary.

  Specific examples include N, N-dimethyl-3-hexadecyloxypropylamine, N, N-dimethyl-3-octadecyloxypropylamine, or a mixture thereof. As a commercial product of N, N-dimethyl-3-octadecyloxypropylamine, Farmin DME-80 (Kao Corporation) can also be used.

(Iii) Alkylamidoamines Examples include compounds represented by the following general formula (4).

In the general formula (4), R ²³ represents an aliphatic hydrocarbon group having 11 to 23 carbon atoms. R ²⁴ may be the same or different, and represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and n represents a number of 2 to 4 inclusive.

  Specifically, N- (3- (dimethylamino) propyl) docosanamide, N- (3- (dimethylamino) propyl) stearamide, or a mixture thereof can be given.

  Moreover, as a quaternary ammonium salt, the compound represented by following General formula (5) is preferable.

In the general formula (5), each of R ¹³ and R ¹⁴ independently represents a hydrogen atom, an alkyl group having 1 to 28 carbon atoms, or a benzyl group, and simultaneously becomes a hydrogen atom or a benzyl group, and Except when it is 1 or more and 3 or less lower alkyl group. An ⁻ represents an anion.

Here, one of R ¹³ and R ¹⁴ is preferably an alkyl group having 16 to 24 carbon atoms, more preferably an alkyl group having 22 carbon atoms, particularly a linear alkyl group, and the other is a lower group having 1 to 3 carbon atoms. An alkyl group, particularly a methyl group is preferred. Examples of the anion An ⁻ include halide ions such as chloride ion and bromide ion; organic anions such as ethyl sulfate ion and methyl carbonate ion, and halide ion, particularly chloride ion is preferable.

  Of these, mono long chain alkyl quaternary ammonium salts are preferred, and specific examples include cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, aralkyltrimethylammonium chloride, behenyltrimethylammonium chloride, and the like. Behenyltrimethylammonium chloride is preferred.

  In the present invention, the component (a) is preferably a tertiary amine compound, and (ii) an ether amine or (iii) an alkylamidoamine is preferred from the viewpoint of the conditioning effect. Among them, (ii) ether amine is preferable, specifically, N, N-dimethyl-3-hexadecyloxypropylamine, N, N-dimethyl-3-octadecyloxypropylamine or a mixture thereof is more preferable. N, N-dimethyl-3-octadecyloxypropylamine is more preferable.

  As the component (a), one type or two or more types may be used. The content of the component (a) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and more preferably 0.5% by mass with respect to the entire hair cosmetic from the viewpoint of appropriate viscosity and ease of removal. % Or more is more preferable. Moreover, 20 mass% or less is preferable, 10 mass% or less is more preferable, and 7 mass% or less is still more preferable. Moreover, 0.1-20 mass% is preferable, 0.1-10 mass% is more preferable, and the range of 0.5-7 mass% is more preferable.

  The component (b) used in the present invention is an aliphatic alcohol having 12 to 28 carbon atoms, and a higher alcohol having a linear or branched alkyl group or alkenyl group having 12 to 26 carbon atoms is particularly preferable. Of these, the alkyl group is preferably a linear alkyl group. Specific examples include cetyl alcohol, stearyl alcohol, aralkyl alcohol, behenyl alcohol and the like, and stearyl alcohol is particularly preferable. These aliphatic alcohols are preferably used alone or in combination of two or more.

  The content of the component (b) is preferably 1% by mass or more, more preferably 2% by mass or more, and more preferably 15% by mass or less with respect to the entire hair cosmetic from the viewpoint of good usability in hair and ease of removal. Preferably, 10 mass% or less is more preferable. Moreover, 1-15 mass% is preferable and the range of 2-10 mass% is more preferable.

  The component (c) aromatic alcohol used in the present invention is one or more selected from benzyl alcohol, cinnamyl alcohol, phenethyl alcohol, p-anisyl alcohol, p-methylbenzyl alcohol, phenoxyethanol and 2-benzyloxyethanol. Compounds. Of these, benzyl alcohol, phenethyl alcohol, phenoxyethanol, and benzyloxyethanol are preferred. These aromatic alcohols are preferably used alone or in combination of two or more.

  The content of the component (c) is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, with respect to the whole hair cosmetic, from the viewpoint of a good feeling in hair and ease of taking out. % By mass or less is preferable, and 5% by mass or less is more preferable. Moreover, 0.01-10 mass% is preferable, and the range of 0.1-5 mass% is more preferable.

  As the component (d) water used in the present invention, ion-exchanged water, distilled water, or the like can be used. The content is more preferably 50% by mass or more, and still more preferably 60% by mass or more with respect to the entire hair cosmetic. Moreover, 98 mass% or less is preferable and 95 mass% is more preferable.

  The hair cosmetic composition according to the present invention may further contain an organic acid having 1 to 10 carbon atoms. Examples of the organic acid having 1 to 10 carbon atoms include one or more compounds selected from monocarboxylic acids, dicarboxylic acids, hydroxycarboxylic acids, aromatic carboxylic acids, and acidic amino acids.

  Specifically, monocarboxylic acids such as acetic acid, propionic acid and caprylic acid; dicarboxylic acids such as malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid and fumaric acid; glycolic acid, lactic acid, hydroxyacrylic acid and glycerin Hydroxycarboxylic acids such as acids, malic acid, tartaric acid and citric acid; aromatic carboxylic acids selected from benzoic acid, salicylic acid and phthalic acid; one or more compounds selected from acidic amino acids such as glutamic acid and aspartic acid .

  Of these, one or more organic carboxylic acids selected from hydroxy monocarboxylic acids and dicarboxylic acids having 2 to 8 carbon atoms are preferred. In particular, one or more compounds selected from glycolic acid, lactic acid, malic acid, tartaric acid and maleic acid are preferable from the viewpoint of smoothness of the hair from the time of application to rinsing, and lactic acid, malic acid or a mixture thereof is more preferable. .

  The content of the organic acid is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, based on the whole hair cosmetic, from the viewpoint of smoothness of hair from the time of application to rinsing and an appropriate viscosity. 0.5% by mass or more is more preferable. Further, from the viewpoint of smoothness of hair from the time of application to rinsing and an appropriate viscosity, it is preferably 5% by mass or less, more preferably 3% by mass or less, and further preferably 2.5% by mass or less.

  The hair cosmetic obtained by the present invention preferably has a pH of 1 to 5.5 at 25 ° C. when diluted 20 times by weight with water. Within this range, the finish of the hair after drying is excellent. By adjusting the pH, a part or all of the salt is used in the form of a salt. The pH is preferably 2 to 6, and more preferably 2.5 to 5 from the viewpoint of good viscosity. Adjustment of pH includes what is normally used as a pH adjuster, such as organic acids having 1 to 10 carbon atoms, inorganic acids, and basic substances such as sodium hydroxide.

The hair cosmetic according to the present invention has a viscosity of the hair cosmetic before use at 30 ° C. (hereinafter referred to as stock solution viscosity) of 10,000 mPa · s to 40000 mPa · s, more preferably 12000 mPa · It is preferably s or more and 25000 mPa · s or less.
Moreover, the following viscosity reduction ratios are used as an index indicating an appropriate viscosity when applied to hair wet with water. It is preferable that the viscosity change in the diluted state is small from the viewpoint of being easy to apply to the hair at the time of application and maintaining a viscosity that is difficult to spill. In particular, the viscosity when the hair cosmetic at 30 ° C. is diluted 2 times by weight with water (hereinafter referred to as the viscosity of the 2-fold diluted solution), the viscosity reduction ratio represented by the following formula calculated from the stock solution viscosity is − It is preferably 50% or more, more preferably -45% or more, and on the other hand, -5% or less is preferred, and it is particularly preferred that the viscosity does not change.

The viscosity reduction rate is obtained from the following formula.
{(Viscosity of 2-fold diluted solution)-(stock solution viscosity)} / (stock solution viscosity) × 100 (%)

  The viscosity of the hair cosmetic before and after dilution with water is measured at 30 ° C. with a viscometer. As the viscometer, a B-type viscometer or a digital viscometer having data compatibility with the B-type viscometer can be used.

  The hair cosmetic composition according to the present invention includes other cationic surfactants, nonionic surfactants, amphoteric surfactants and the like; highly polymerized dimethylpolysiloxane, methylpolysiloxane, amino-modified silicone, and polyether-modified silicone. , Silicone compounds such as methylphenylpolysiloxane, fatty acid-modified silicone, alcohol-modified silicone, alkoxy-modified silicone, epoxy-modified silicone, fluorine-modified silicone, cyclic silicone and alkyl-modified silicone: vegetable oils such as sunflower oil and castor oil, hydrogenation thereof Products and mixtures, hydrocarbon oils such as liquid paraffin, squalane and squalene, higher fatty acids such as oleic acid and stearic acid and esters thereof, (hydroxystearic acid / stearic acid / rosinic acid) dipentaerythrityl Oily components such as organic acid esters of polyhydric alcohol condensates; cationic polymers such as cationized cellulose and cationized guar gums; other pearlizing agents, dyes, fragrances, propellants, chelating agents, pH adjusters, antiseptics An agent, a refreshing agent, an antidandruff agent, an antioxidant and the like can be appropriately blended within a range not impairing the object of the present invention.

  Nonionic surfactants include polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene sorbite fatty acid esters, polyoxyalkylene glycerin fatty acid esters, polyoxyalkylene fatty acid esters, glyceryl ethers, polyoxyalkylene alkyl ethers, Examples include oxyalkylene alkyl phenyl ethers, polyoxyalkylene (cured) castor oils, sucrose fatty acid esters, polyglycerin alkyl ethers, polyglycerin fatty acid esters, fatty acid alkanolamides, and alkyl glycosides. Of these, alkylglycosides, polyoxyalkylene (C8 to C20) fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil, fatty acid alkanolamides, and polyoxyalkylene alkyl ethers are preferred. For example, oleic acid diethanolamide, palm kernel oil fatty acid diethanolamide, coconut oil fatty acid diethanolamide, lauric acid diethanolamide, polyoxyethylene coconut oil fatty acid monoethanolamide, coconut oil fatty acid monoethanolamide, lauric acid isopropanolamide, lauric acid monoethanol Examples include ethanolamide, polyoxyethylene alkyl ether, and polyoxypropylene alkyl ether. Commercial products such as polyoxypropylene (3) monooctyl ether [Sofcare GP-1 (Kao Corporation)] can be used.

  Examples of amphoteric surfactants include betaine surfactants such as alkyldimethylaminoacetic acid betaines and fatty acid amidopropyl betaines. Specifically, lauric acid amidopropyl betaine, palm kernel oil fatty acid amidopropyl betaine, and coconut oil fatty acid amidopropyl betaine can be used.

  The hair cosmetic composition according to the present invention can be used for hair lining, hair conditioner, hair treatment, hair pack, hair cream, conditioning mousse, hair mousse, leave-on treatment, and the like.

Next, the manufacturing method of hair cosmetics is demonstrated.
The method for producing a hair cosmetic according to the present invention includes the following steps.
Step I: An oil phase containing component (a) and component (b) and an aqueous phase containing component (d) are mixed and emulsified to obtain a liquid emulsion Step II: the obtained liquid emulsion The step of adding and mixing the component (c) after cooling to below 35 ° C. below the emulsification temperature, ie, conventionally, aromatic alcohol was added when emulsifying the water phase and the oil phase, The method for producing a hair cosmetic according to the present invention comprises adding a component (c) after cooling a liquid emulsion containing the component (a), the component (b), and the component (d) to a temperature lower than the emulsification temperature. is there.

  Here, the temperature lower than the emulsification temperature is a state where the temperature is lower than the emulsification temperature of the water phase and the oil phase but is higher than 35 ° C. (about room temperature). In the present invention, after the components are mixed and emulsified, the component (c) is added somewhere in the cooling step in the process of cooling to room temperature, in other words, before the liquid emulsion is completely cooled.

[Step I]
In the production method according to the present invention, the temperature at which the aqueous phase and the oil phase are mixed and emulsified is preferably 50 ° C. or higher and 100 ° C. or lower, and more preferably 55 ° C. or higher and 70 ° C. or lower, from the viewpoint of ease of taking out and moderate viscosity. As a means for mixing and emulsifying, a general mixing and stirring device is used.

[Step II]
The liquid emulsion obtained in Step I is cooled slightly from the emulsification temperature, and then component (c) is added. In other words, in the process of cooling the liquid emulsion from the emulsification temperature to room temperature, the component (c) is added while being temporarily held at an intermediate temperature, and then cooled to room temperature. The cooling temperature is preferably room temperature or higher and 60 ° C. or lower, and the temperature difference δT (emulsification temperature−temperature at the time of charging the component (c)) when adding the component (c) is 0 ° C. <δT <50. It is preferably within the range of ° C., more preferably within the range of 5 ° C. ≦ δT ≦ 20 ° C.

  The method of adding the component (c) may be any form of batch, dividing into a plurality of times, or continuously supplying within a predetermined time, but more preferably batch. Moreover, after adding a component (c), it cools further. Further, the cooling temperature is not particularly limited, but is preferably −30 to −5 ° C. from the viewpoint of obtaining an appropriate viscosity.

Next, the effect of the present invention will be described.
The hair cosmetic obtained by the present invention has an excellent balance between ease of taking out from a container and appropriate viscosity when applied to hair wet with water. The reason is considered as follows. Generally, in hair cosmetics, it is considered that a cationic surfactant and a higher alcohol form a gel structure formed from a bilayer film, thereby increasing the viscosity. In the production method according to the present invention, component (c) is added in a gel structure formed from a bilayer film of component (a) and component (b) by adding component (c) at a temperature lower than the emulsification temperature. It is presumed that a large amount of water exists in the vicinity of the hydrophilic group of the bilayer membrane, so that a gap is formed in the entire emulsion particle and water can be taken into the emulsion particle. As a result, it becomes possible to swell while the gel structure is maintained, so that the flexibility of the bilayer membrane is increased, and it is considered that water is more easily taken into the interior than the inside. On the other hand, when the hair cosmetic is stored in a container, the viscosity is desired to be low from the viewpoint of easy removal of the hair cosmetic from the container. Therefore, in the production method according to the present invention, since the decrease in the viscosity of the hair cosmetic when diluted with water as described above can be suppressed, when diluted with water while maintaining a relatively low viscosity that is easy to remove from the container. A certain degree of viscosity can be maintained. Moreover, it becomes easy to use up the hair cosmetics which entered the container to the last by having such a viscosity characteristic.

  In the hair cosmetic obtained by the present invention, the above components (a) to (d) form a water-swellable gel structure. Here, the water-swellable gel structure means a state in which the emulsion of the components (a) to (d) contains water and can swell. The hair cosmetic composition according to the present invention is considered that the water-swellable gel structure swells in contact with external water, thereby inhibiting the dilution effect by water and suppressing the decrease in viscosity. The presence or absence of swelling due to the water-swellable gel structure can be confirmed by any measurement by observation with a polarizing microscope or by measuring the lamellar surface distance by small angle X-ray scattering.

  As mentioned above, although embodiment of this invention was described, these are illustrations of this invention and various structures other than the above are also employable.

  In the following examples, all the percentages are mass%.

<Manufacturing method>
(Production method A)
(1) Using a 500 mL beaker, an acid was added to component (d) heated to 55 ° C. to obtain an aqueous phase.
(2) Separately, component (a) and component (b) were mixed and dissolved at 70 ° C. to obtain an oil phase.
(3) While maintaining the aqueous phase obtained in (1) above at 55 ° C., the oil phase of (2) above was added and stirred for about 20 minutes (HEIDON Three-One Motor BL600, speed 200 r / min) to emulsify And then cooled to 45-50 ° C.
(4) The component (c) was added with stirring, the mixture was cooled to 30 ° C. and stirred, the production was completed, and a hair cosmetic was obtained.

(Production method B)
(1) Using a 500 mL beaker, an acid was added to component (d) heated to 55 ° C. to obtain an aqueous phase.
(2) Separately, component (a), component (b) and component (c) were mixed and dissolved at 70 ° C. to obtain an oil phase.
(3) While maintaining the aqueous phase obtained in (1) above at 55 ° C., add the oil phase in (2) above and stir for about 20 minutes (HEIDON three-one motor BL600 apparatus, speed 200 r / min), After emulsification, the mixture was cooled and stirred to 30 ° C. to obtain a hair cosmetic.

(Production method C)
(1) Using a 500 mL beaker, an acid was added to component (d) heated to 55 ° C. to obtain an aqueous phase.
(2) Component (a) and component (b) were mixed and dissolved at 70 ° C. to obtain an oil phase.
(3) While maintaining the aqueous phase obtained in (1) above at 55 ° C., add the oil phase in (2) above and stir for about 20 minutes (HEIDON three-one motor BL600 apparatus, speed 200 r / min), After emulsification, it was cooled.
(4) After cooling the emulsion, component (c) was added with stirring, the production was terminated, and a hair cosmetic was obtained.

<Evaluation method>
(Dischargeability)
-Fill a 200ml narrow mouth bottle (PH-200, Takemoto container) with 100g of hair cosmetic, and close the container mouth with a one-touch cap (nozzle diameter φ2.4mm, Z-24 one-touch cap, Takemoto container). After that, it was left overnight. After that, the container was turned upside down without opening the one-touch cap, and the center of the container was pushed by hand from the outside of the container at intervals of once every 5 seconds until the outer diameter of the container became half. This was repeated until the filled hair cosmetic was discharged from the mouth of the container. What was discharged 10 times or less was “◯”, and what was discharged 10 times was “x”.

(Thinning rate)
Using a digital viscometer (TVB-10R, manufactured by Toki Sangyo Co., Ltd.), the viscosity of the hair cosmetic (stock solution viscosity [mPa · s]) and the viscosity when the hair cosmetic is diluted 2 times with water (2 The viscosity of the diluted solution [mPa · s]) was measured and calculated according to the following formula. The measurement conditions were rotor No. TC, 60 seconds, 10 r / min, 30 ° C. When the viscosity is low, a digital viscometer (TV-10, manufactured by Toki Sangyo Co., Ltd.) is used. M3, 60 seconds, 12 r / min, 30 ° C.
{(Viscosity of 2-fold diluted solution)-(stock solution viscosity)} / (stock solution viscosity) × 100 (%)

(Familiarity, smoothness, presence of hair cosmetics, smoothness, persistence of smoothness)
A Japanese woman's hair 20g (about 15-20cm) was bundled and washed with shampoo. To this hair bundle, 2 g of hair cosmetic composition according to the formulation shown in Table 1 was uniformly applied, and then rinsed with running water for 30 seconds. In the process from application to rinsing, “ease of application”, “smoothness during application”, “presence of hair cosmetics during application”, “smoothness during rinsing”, “smoothness during rinsing” Each item of “sustainability” was evaluated according to the following criteria. The evaluation was performed by a four-level evaluation by five people, and the total value was shown.

<Evaluation criteria>
・ "Familiarity during application"
4: Very easy to adapt 3: Slightly adaptable 2: Slightly adaptable 1: Slightly adaptable • “Smoothness during application”
4: Very smooth 3: Slightly smooth 2: Not very smooth 1: Not smooth • “Presence of hair cosmetics at the time of application”
4: Very presence 3: Slight presence 2: Very little presence 1: No presence “Smoothness when rinsing”
4: Extremely smooth 3: Slightly smooth 2: Not very smooth 1: Not smooth ・ "Persistence of smoothness during rinsing"
4: A very smooth feeling continues 3: A slightly smooth feeling continues 2: A smooth feeling does not continue 1: A smooth feeling does not continue

<Examples and comparative examples>
The total amount of the formulations shown in Tables 1 and 2 was converted to 300 g, and hair cosmetics were obtained by the above production method. The obtained hair cosmetics were evaluated, and the results are shown in Tables 1 and 2. The pH was diluted 20 times by weight with water and measured at 25 ° C. using a pH meter (HM-30R, manufactured by Toa DKK).

Claims (4)

The following components (a) to (d);
(A) a cationic surfactant (b) an aliphatic alcohol having 12 to 28 carbon atoms (c) an aromatic alcohol (d) containing water,
Mixing an oil phase containing component (a) and component (b) with an aqueous phase containing component (d) and emulsifying to obtain a liquid emulsion;
A step of adding the component (c) and mixing the liquid emulsion after cooling at a temperature below 35 ° C. or lower than the emulsification temperature of the liquid emulsion;
The manufacturing method of hair cosmetics containing this.   The method for producing a hair cosmetic according to claim 1, wherein component (c) is benzyl alcohol. The method for producing a hair cosmetic according to claim 1 or 2, wherein the viscosity reduction rate represented by the following formula (1) is -50% or more.
{(Viscosity of 2-fold diluted solution)-(stock solution viscosity)} / (stock solution viscosity) × 100 (%) (1)
In the above formula (1), the stock solution viscosity is the viscosity at 30 ° C. of the hair cosmetic before use, and the viscosity of the 2-fold diluted solution is the viscosity at 30 ° C. when the hair cosmetic is diluted 2 times by weight with water. Each is shown.   The method for producing a hair cosmetic according to any one of claims 1 to 3, wherein the step of mixing includes a step of further cooling after adding the component (c).