JP5614942B2 - Hair beauty method - Google Patents

Description

  The present invention relates to a hair cosmetic, and more specifically, a hair cosmetic capable of dealing with severely damaged hair, in particular, contacting with a cation-based base previously applied to the hair. Thus, the present invention relates to a hair cosmetic that can enhance the treatment effect by forming a new complex on the hair.

  For normal hair care, shampooing, rinsing and the like are sufficient, and various techniques for applying to these products are provided. However, in recent years, the chances of hair being excessively damaged due to coloring of hair, the influence of ultraviolet rays of the sun, and air pollution are increasing. Along with this, interest and demand for hair care are increasing.

  In particular, the present invention is intended to provide means capable of caring for damaged hair.

The present invention is a hair cosmetic capable of giving the hair a touch as if it was covered with a cuticle, and in particular, by taking care of more serious hair damage by forming a new complex in the hair. It is invention which provides the hair cosmetics which can be performed. Specifically, this invention is invention which provides the hair cosmetics (henceforth the hair cosmetics of this invention) according to the following conditions (1)-(4).
(1) A high-viscosity carboxyvinyl polymer having a viscosity of 12,000 to 35000 mPa · s when left as an aqueous 0.2% by mass neutral solution at 25 ° C. for 1 hour, and 0.2% by mass at 25 ° C. A low-viscosity carboxyvinyl polymer having a viscosity of 2000 to 7500 mPa · s when left as an aqueous neutral region for 1 hour,
The total amount of both carboxyvinyl polymers is 0.01-2% by weight of the hair cosmetic, and the mass ratio of the high viscosity carboxyvinyl polymer to the low viscosity carboxyvinyl polymer is high viscosity carboxyvinyl polymer: low viscosity Carboxyvinyl polymer = 9: 1 to 1: 9.
(2) The liquid dimethylpolysiloxane whose polymerization degree is 4-30 is contained 0.1-20 mass% of hair cosmetics.
(3) One or two or more kinds of rubbery polysiloxanes selected from the group consisting of rubbery dimethylpolysiloxane and rubbery dihydroxypolydimethylsiloxane having a degree of polymerization of 3000 to 10,000 are used in 0.1% of hair cosmetics. -10% by mass.
(4) Contains water.

  When the hair cosmetic composition of the present invention is used as a normal hair rinse or hair conditioner, it can give the hair a feeling as if it was covered with a cuticle. By forming a complex with a cationic activator above, it is possible to perform more thorough care for hair damage and the like due to the presence of the complex. When this other embodiment is carried out, it is premised that a cationic active agent is present on the hair when the hair cosmetic composition of the present invention is applied to the hair. This is performed by applying a hair cosmetic containing a cationic activator, specifically, applying a hair rinse or the like to the hair in advance and washing the hair cosmetic of the present invention as it is or in a lightly rinsed state. Can do.

  The hair cosmetic composition of the present invention further contains an alkyl-modified carboxyvinyl polymer and polymer emulsification, whereby the emulsified particles are destroyed when the user uses the hair cosmetic composition of the present invention. It is possible to give a “phase inversion”.

  According to the present invention, a new complex can be formed on the hair by bringing it into contact with a hair cosmetic capable of dealing with severely damaged hair, in particular, a cation-based base applied to the hair in advance. Hair cosmetics capable of enhancing the treatment effect are provided.

[Hair cosmetic composition of the present invention]
<Essential ingredients>
(1) Carboxyvinyl polymer (polyacrylic acid crosslinked polymer)
In the hair cosmetic composition of the present invention, it is necessary to blend both (1-1) a high-viscosity carboxyvinyl polymer and (1-2) a low-viscosity carboxyvinyl polymer.

  (1-1) High-viscosity carboxyvinyl polymer has a viscosity of 12000 to 35000 mPa · s, more preferably 15000 to 25000 mPas when left as an aqueous 0.2% by weight neutral region at 25 ° C. for 1 hour. A carboxyvinyl polymer that is s. Examples of commercially available products include Syntalen K (sold by Wako Pure Chemical Industries, Ltd.), Hibiswako 104 (manufactured by Wako Pure Chemical Industries, Ltd.), Carbopol 5984 (manufactured by Noveon).

  (1-2) A low-viscosity carboxyvinyl polymer is a carboxyvinyl polymer having a viscosity of 2000 to 7500 mPa · s, more preferably 4000 to 6000 mPa · s, at 25 ° C. It is. Examples of commercially available products include Sinteren L (sold by Wako Pure Chemical Industries, Ltd.), Hibiswako 105 (manufactured by Wako Pure Chemical Industries, Ltd.), Carbopol 1382 (manufactured by Noveon).

  The total amount of both carboxyvinyl pyrimers is 0.01 to 2% by weight, preferably 0.1 to 1% by weight of the hair cosmetic. When the blending amount of both carboxyvinyl polymers is less than 0.01% by mass of the hair cosmetic, the formulation has little thickening and there is a problem in stability. A problem arises in spreading. The blending ratio of the high-viscosity carboxyvinyl polymer and the low-viscosity carboxyvinyl polymer is, by mass ratio, high-viscosity carboxyvinyl polymer: low-viscosity carboxyvinyl polymer = 1: 9 to 9: 1, preferably The range is 2: 8 to 8: 2. If the carboxyvinyl polymer having a high viscosity of less than 1: 9 is less, it is difficult to give smoothness to the finished hair feel. If the carboxyvinyl polymer having a viscosity of more than 9: 1 is high, the finished product It becomes difficult to impart flexibility to the hair feel.

(2) Liquid dimethylpolysiloxane It is necessary to mix | blend liquid dimethylpolysiloxane with the hair cosmetics of this invention.
In the present invention, the liquid dimethylpolysiloxane is a liquid silicone oil, and is a low-polymerization liquid dimethylpolysiloxane having an average number of difunctional (D) units of 4 to 30. The liquid dimethylpolysiloxane is generally used in the cosmetic field, and can be produced by a conventional method, and a commercially available product is also readily available. As a commercial item, although KF-96A-6cs (made by Shin-Etsu Chemical Co., Ltd.) etc. are mentioned, for example, it is not limited to this.

  The blending amount of the liquid dimethylpolysiloxane in the hair cosmetic of the present invention is 0.1 to 20% by mass, preferably 1 to 15% by mass of the hair cosmetic. If the blending amount is less than 0.1% by mass of the hair cosmetic, smoothness is not felt in the finished hair feel, and if it exceeds 20% by mass, there is a strong tendency to feel oily and firmness in the hair feel, preferably Absent.

(3) Rubber-like polysiloxane It is necessary to mix | blend the highly polymerized rubber-like polysiloxane whose polymerization degree is 3000-10000 with the hair cosmetics of this invention. Specifically, (3-1) rubbery dimethylpolysiloxane in which both ends of dimethylpolysiloxane are methyl groups, and (3-2) rubbery dihydroxypolydimethylsiloxane in which both ends are substituted with hydroxyl groups are used. Can do.

(3-1) Rubbery dimethylpolysiloxane In the present invention, the rubbery dimethylpolysiloxane is prepared by a conventional method, for example, a crosslinking agent and a catalyst with respect to a heat-treated mixture such as a linear silicone polymer, a filler, and a dispersant. Etc. can be produced. By adjusting these production conditions within the obvious range of those skilled in the art, it is possible to prepare a silicone rubber having the above viscosity range. Examples of commercially available products include silicone G-20-DMS and silicone G-30-IP (both manufactured by Shin-Etsu Chemical Co., Ltd.). Commercially available rubbery dimethylpolysiloxane is usually provided as a viscous liquid dissolved in a suitable solvent such as low viscosity dimethylpolysiloxane, isoparaffin and the like.

(3-2) Rubbery dihydroxypolydimethylsiloxane In the present invention, the rubbery dihydroxypolydimethylsiloxane is a gum-like dihydroxypolydimethylsiloxane having a viscosity at room temperature of 2000 to 10,000 mPa · s. The dihydroxypolydimethylsiloxane can be produced by a conventional method by adjusting the degree of polymerization of the number of bifunctional (D) units so that the above viscosity is obtained. A commercially available product can also be used, but in a commercially available product, the rubbery dihydroxypolydimethylsiloxane is generally supplied in a state of being dissolved in a solvent. For example, silicone XF49-C2070 (manufactured by GE Toshiba Silicone), which is a commercial product that can be used in the present invention, is provided in a state where 20 parts by mass of rubbery dihydroxypolydimethylsiloxane is dissolved in 80 parts by mass of hydrogenated polybutene. Has been.

  The blending amount (pure part) when blending the rubbery dihydroxypolydimethylsiloxane in the hair cosmetic of the present invention is 0.1 to 10% by weight, preferably 0.2 to 8% by weight of the hair cosmetic. . If the blending amount is less than 0.1% by mass of the hair cosmetic, it is not possible to impart sufficient softness to the hair feel, and if it exceeds 10% by mass, the hair feel is not preferable due to stickiness and weight.

  The blending amount (pure content) when blending the rubbery dimethylpolysiloxane with the hair cosmetic composition of the present invention is preferably 0.1 to 10% by mass of the hair cosmetic composition, particularly preferably 0.2 to 8%. % By mass. If the blending amount is less than 0.1% by mass of the hair cosmetic, it is difficult to sufficiently impart a smooth feeling to the product, and if it exceeds 10% by mass, the hair feel is accompanied by stickiness and weight. Absent.

  Further, as described above, rubbery dihydroxypolydimethylsiloxane and rubbery dimethylpolysiloxane (pure component) can be blended alone, but they can also be blended in combination. In this case, a particularly preferable blending ratio is a mass ratio of rubbery dihydroxypolydimethylsiloxane: rubbery dimethylpolysiloxane = 1: 2 to 2: 1. When the rubbery dihydroxypolydimethylsiloxane is less than 1: 2, the hair suppleness tends to become latent due to the active blending of the dihydroxypolydimethylsiloxane, and the dihydroxypolydimethyl is more than 2: 1. When there is much siloxane, there exists a tendency for the smoothness of the hair feel to become latent by the mixing | blending of rubber-like dimethylpolysiloxane.

(4) Water It is necessary to add water to the hair cosmetic composition of the present invention.

  Purified water, ion-exchanged water, tap water, natural water, etc. can be used as water, and the blending amount is an essential blending component of the hair cosmetic of the present invention, (1) carboxyvinyl polymer, (2 The liquid dimethylpolysiloxane, and (3) the rubbery polysiloxane, and the optional blending components blended as necessary are in amounts that give appropriate concentrations, and are generally 1 to 99 of the hair cosmetic. It is the range of mass%. If the amount of water is excessive, the concentration of each compounding component in the hair cosmetic will be too thin, making it difficult to exert the effects of the present invention. If the amount is too small, the concentration of each compounding component in the hair cosmetic will be high. This increases the tendency to cause compounding problems and waste of raw materials.

<Selective ingredients>
(1) Alkyl-modified carboxyvinyl polymer The hair cosmetic composition of the present invention is blended with an alkyl-modified carboxyvinyl polymer and emulsified with a polymer to emulsify the user when using the hair cosmetic composition of the present invention. It is possible to give a “phase inversion” when the particles are broken.

  In the present invention, the alkyl-modified carboxyvinyl polymer is an alkyl methacrylate copolymer, and is commercially available, for example, as PEMULEN TR-1 or PEMULEN TR-2 (Nikko Chemicals).

  As described above, polymer emulsification can be performed by blending the alkyl-modified carboxyvinyl polymer into the hair cosmetic composition of the present invention. By the polymer emulsification, in the hair cosmetic composition of the present invention, it becomes easy to blend a relatively large amount of the silicone contained in the essential component and the selective component. The technique for polymer emulsification will be described later.

  When the alkyl-modified carboxyvinyl polymer is blended with the hair cosmetic of the present invention, the blending amount is preferably 0.01 to 1% by mass of the hair cosmetic, particularly preferably 0.05 to 0.5% by mass. It is. If the blending amount is less than 0.01% by mass of the hair cosmetic, it is difficult to sufficiently perform the polymer emulsification, and if it exceeds 1% by mass, the hair feel becomes irritated, which is not preferable. .

(2) Other components In the hair cosmetic composition of the present invention, a range that does not impair the effects of the present invention, for example, unless the carboxyvinyl polymer in the compounding component spontaneously forms a complex in the system, Other additive components may be optionally blended. Examples of such components include powder components, liquid fats and oils, solid fats and oils, waxes, hydrocarbons, higher fatty acids, ester oils, silicone oils other than the above essential components and optional components (polyoxyethylene / methylpolysiloxane copolymer) Etc.), nonionic surfactants, anionic surfactants, humectants, water-soluble polymers or thickeners other than the above essential components and optional components, UV absorbers, sequestering agents, lower alcohols, polyhydric alcohols Sugar, amino acids, organic amines, polymer emulsions, pH adjusters (alkali agents such as 2-amino-2-methyl-1-propanol), skin nutrients, vitamins, antioxidants, antioxidant aids, A plant extract or the like can be appropriately blended as necessary.

<Production of hair cosmetics of the present invention>
The hair cosmetic composition of the present invention can be produced by selecting a production method according to the desired dosage form. For example, a water-soluble component is dissolved in purified water, an oil component is added together with a surfactant component such as an alkyl-modified carboxyvinyl polymer, and emulsified with a homomixer or the like. If necessary, a thickener is added with an alkaline agent. It can be manufactured by neutralizing. Moreover, when the dosage form of the hair cosmetic of the present invention is an oil-water separation type dosage form, it can also be produced by simply blending each component.

<Usage form of the hair cosmetic composition of the present invention>
As described above, the hair cosmetic composition of the present invention is a hair cosmetic composition that has an excellent treatment effect and can provide a touch as if covered with a cuticle, such as a general hair rinse, a hair conditioner, etc. Can be used. In addition, it is possible to enhance the treatment effect by forming a new complex on the hair by bringing it into contact with a cation-based base previously applied to the hair.

  In order to apply a cation-based base to the hair, a hair cosmetic containing a cationic active agent is applied to the hair before applying the hair cosmetic of the present invention, or after being rinsed lightly. By additionally applying the hair cosmetic of the present invention, a complex of the cationic active agent and the carboxyvinyl polymer in the hair cosmetic of the present invention is formed on the hair. The presence of the complex on the hair makes it possible to perform sufficient care with respect to severely damaged hair such as a cuticle being peeled off.

  A typical form of a hair cosmetic containing a cationic active agent is a hair rinse. That is, a hair rinse containing a hydration agent such as hydrocarbon oil, higher alcohol, ester oil, silicone oil, glycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, and the like together with a cation activator. It can be used as a base. In the cation-based base, the use of a hair cosmetic in which nutritional components for hair are positively mixed is also a suitable mode for caring for hair that is severely damaged by coloring or the like. Examples of the nutritional component include various hydrolyzed protein solutions, lecithin, various amino acids, and the like.

  Examples of the cationic activator to be blended with such a cation-based base include, but are not limited to, alkyltrimethylammonium chloride and dialkyldimethylammonium chloride.

  Examples of the present invention will be described below, but the scope of the present invention is not limited thereby. Unless otherwise specified, the blending amount is mass% with respect to the blending target.

[A] Examination of effects when hair cosmetics are used alone (1) Basic formulation A test product having the formulation shown in Table 1 below is prepared by dissolving a water-soluble component in purified water and converting the oil component into an alkyl-modified carboxyvinyl. After adding with a polymer and emulsifying with a homomixer, it manufactured by neutralizing a thickener with an alkali agent, and used in the various tests mentioned later. In addition, the same thing was used for the various commercial items which attached | subjected the number with * in all the following prescriptions. “-” In the table means “no formulation”.

(2) Test method and test results In the following manner, an actual use test and a test using a combing tester were performed, and the results are shown in Table 2 below.

(A) Actual use test 1
For 12 male and female panels, after a normal shampoo (sodium polyoxyethylene lauryl ether sulfate: 10%), rinse it off, apply each test product to the hair, rinse with hot water, (a-1) Hair feel (rinse feel), (a-2) hair feel after towel drying for about 10 minutes (towel dry feel), (a-3) hair feel after performing hot air-air drying with a subsequent dryer ( The actual use test about the feeling after dry) was conducted for Examples 1 to 6 and Comparative Example 1 in Table 1 above. Evaluation was performed according to the following criteria.

(A-1) Rinse feel With regard to the evaluation of the hair feel when rinsing with water, a score is given in seven stages from -3 to 3 on the basis of Comparative Example 1, and the average value of the panel is -3 to -2: E. , -2 to -1: D, -1 to 1: C, 1-2: B, 2-3: A. (The larger the number, the better the rinsing feel)

(A-2) Feel after towel drying The evaluation of the hair feel after towel drying is based on Comparative Example 1 as a reference, and is scored in seven stages from -3 to -3, and the average value of Nell is -3 to -2: E. , -2 to -1: D, -1 to 1: C, 1-2: B, 2-3: A. (The larger the value, the better the feel after towel drying)

(A-3) Feel after drying The evaluation of the hair feel after drying is based on Comparative Example 1 and given a score in seven stages from -3 to 3, and the average value of Nell is -3 to -2: E,- The results are described as 2--1: D, -1 to 1: C, 1-2: B, 2-3: A. (The larger the value, the better the feel after drying)

(B) Test with Combing Tester For Examples 7 to 8 and Comparative Examples 2 to 3, a commercially available hybrid agent (Uono Fiber in EX Bleach (manufactured by Shiseido Co., Ltd.)) was used with a strand dedicated to hair in which 200 hairs were bundled. ), After applying the hair damage treatment, each sample was applied, and the comb through from rinse to dry was measured and the load was measured using a combing tester. The smaller the weight value, the smoother and smoother it is.

  According to the results of Examples 1 to 3, by blending a combination of a high viscosity and a low viscosity carboxyvinyl polymer, it is possible to smoothly and smoothly improve the feeling after towel drying to drying in a test product. Became clear. Moreover, it became clear by Examples 4-6 that the feeling after towel drying can be improved supplely by mix | blending rubber-like dihydroxypolydimethylsiloxane. Further, Examples 7 to 8 which were tested with a combing tester revealed that the combing load at the time of passing can be improved by combining a carboxyvinyl polymer having a high viscosity and a low viscosity. It was found that the combing load after towel drying was improved by adding the dihydroxypolydimethylsiloxane.

[B] Examination of effects when hair cosmetics are subjected to contact treatment with a base containing a cationic activator First, for the eight panelists who performed permanent treatment and the eight panelists who performed hair dyeing treatment, After applying the cationic active agent-containing base of the formulation shown in the following Table 3 containing the cationic active agent and washing it lightly, a test example of the formulation shown in the above Table 1 was applied to form a complex on the hair. In addition, an actual use test (a) and a test (b) using a combing tester similar to the above were performed. The results are shown in Table 4.

<Manufacturing method>
The purified water was heated to 80 ° C., and the cationic activator and cetanol were added and dissolved, and then other components were added in order, homomixer treatment was performed, and the mixture was cooled to room temperature.

<Evaluation of complex formation in hair>
Since complex formation in hair appears in white granular form, the complex formation amount was evaluated by visual judgment on the hair. On the basis of Comparative Example 1, a score was given in 7 stages from -3 to 3 (the larger the amount of the complex, the larger the numerical value), and the average value of the panel was -3 to -2: E, -2 to -1 : D, -1 to 1: C, 1-2: B, 2-3: A, and the results are described.

  In Examples 1 to 3 and 7 to 8, it is possible to improve the feel during rinsing by forming a new complex by overcoating the cationic base material and the hair cosmetic composition of the present invention. Also in this overcoating, it became clear that the feel after towel drying to dryness can be smoothly and smoothly improved by blending a combination of a high viscosity and a low viscosity carboxyvinyl polymer. Moreover, it became clear by Examples 4-6 that the feeling after towel drying can be improved supplely by mix | blending rubber-like dihydroxypolydimethylsiloxane.

  Hereinafter, the formulation example relevant to the hair cosmetics of this invention is disclosed as an Example and a reference example.

(1) Hair cosmetic of the present invention [Example 9] Hair treatment

<Manufacturing method>
A water-soluble component was dissolved in purified water, an oily component was added with an activator, and the mixture was emulsified with a homomixer, and then the thickener was neutralized with an alkaline agent.

  [Example 10] Hair treatment

<Manufacturing method>
A water-soluble component was dissolved in purified water, an oily component was added with an activator, and the mixture was emulsified with a homomixer, and then the thickener was neutralized with an alkaline agent.

  [Example 11] Hair treatment

<Manufacturing method>
A water-soluble component was dissolved in purified water, an oily component was added with an activator, and the mixture was emulsified with a homomixer.

(2) Cationic base As described above, the cationic base in the present invention is applied to the hair in advance, and then contacted with the hair cosmetic of the present invention to form a new complex, thereby It is possible to give the hair more treatment effect.

  [Reference Example 1] Cationic base (1)

<Manufacturing method>
Purified water was heated to 80 ° C., and the cationic activator and cetanol were added and dissolved, and then other components were added in order to perform a homomixer treatment, followed by cooling to room temperature.

  [Reference Example 2] Cationic base (2)

<Manufacturing method>
Purified water was heated to 80 ° C., and the cationic activator and cetanol were added and dissolved, and then other components were added in order to perform a homomixer treatment, followed by cooling to room temperature.

  [Reference Example 3] Cationic base (3)

<Manufacturing method>
Purified water was heated to 80 ° C., and the cationic activator and cetanol were added and dissolved, and then other components were added in order to perform a homomixer treatment, followed by cooling to room temperature.

Claims (3)

The following steps (1) and (2):
(1) a first step in which a hair cosmetic containing a cationic active agent is used on the hair and the cationic active agent remains on the hair;
(2) a second step of performing cosmetic treatment of the hair by an excellent treatment effect by contacting the hair cosmetic with the hair in which the cationic active agent remains in the first step and forming a complex;
Wherein the hair cosmetic used in the step (2) has the following conditions (a) to (d):
(A) a high-viscosity carboxyvinyl polymer having a viscosity of 12,000 to 35000 mPa · s when left as an aqueous neutral region solution of 0.2% by mass at 25 ° C. for 1 hour, and 0.2% by mass at 25 ° C. A low-viscosity carboxyvinyl polymer having a viscosity of 2000 to 7500 mPa · s when left as an aqueous neutral region for 1 hour,
The total amount of both carboxyvinyl polymers is 0.01-2% by weight of the hair cosmetic, and the mass ratio of the high viscosity carboxyvinyl polymer to the low viscosity carboxyvinyl polymer is high viscosity carboxyvinyl polymer: low viscosity Carboxyvinyl polymer = 9: 1 to 1: 9 ,
(B) containing 0.1 to 20% by mass of a liquid dimethylpolysiloxane having a polymerization degree of 4 to 30% of the hair cosmetic ,
(C) A rubbery polysiloxane selected from the group consisting of rubbery dimethylpolysiloxane and rubbery dihydroxypolydimethylsiloxane having a polymerization degree of one or more kinds of 3000 to 10,000 is 0.1% of hair cosmetics. 10 mass% ,
(D) contains water ;
A hair cosmetic method according to claim 1. The hair cosmetic method according to claim 1, wherein the hair cosmetic used in step (2) further contains an alkyl-modified carboxyvinyl polymer . The hair cosmetic method according to claim 1 or 2, wherein part or all of the rubbery polysiloxane in the condition (c) is rubbery dihydroxypolydimethylsiloxane.