JP2012056929A - Multiagent type hair treatment composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multiagent type hair treatment composition which gives a satisfactory fading preventing effect and a finger passing improving effect to hair, and increases persistence of their effects.SOLUTION: The multiagent type hair treatment composition contains: an A agent composed of a first composition including atomized wax; and a B agent which is liquid at room temperature and is composed of a second composition containing one or more kinds selected from esters or ethers, wherein one each of a hydrophilic part shown in the following (a) and a lipophilic part shown in the following (b) form an ester bond or an ether bond so as to be bonded, and is applied to hair in accordance with an order that the A agent is applied to hair, and thereafter, the B agent is applied thereto in a superimposed state: (a) is polyhydric alcohol in which the number of carbon atoms/the number of oxygen atoms=1 to 4, polyhydric alcohol as the condensate of the polyhydric alcohol or sugar; and (b) is unsaturated fatty acid or unsaturated higher alcohol.

Description

  The present invention relates to a multi-component hair treatment composition for sequentially applying each agent constituting a hair treatment to hair.

  Conventionally, hair treatment compositions have been widely used to repair hair damage caused by hair dyeing treatment, permanent wave treatment or other causes. Hair treatments usually contain ingredients such as animal and vegetable oils and synthetic ester oils to supplement the oil and soften the hair, and silicones to improve fingering and gloss. The hair treatment composition is composed of various combinations.

  By the way, when various components are blended in a single composition, a synergistic effect between these components can be expected, while the concentration of each component in the composition is relatively low or specified. In many cases, the excellent effect of the component is not sufficiently exhibited due to the negative interaction between the components.

  Accordingly, many multi-component hair treatment compositions have been proposed in which the components are divided into multiple agents and applied separately to the hair.

Japanese Patent No. 3148365 Japanese Patent No. 3221533 Patent 3726119 gazette For example, the keratin fiber modifier kit disclosed in Patent Document 1 includes a first agent containing a water-soluble salt (A) of a specific metal ion and a specific acid ion (B-1). ) And a second agent containing an organic acid (B-2). Then, after treating the keratinous fiber with the first agent, the hair is reacted with (A) and (B-1) by treating with the second agent after several tens of minutes with or without intermediate rinsing. In the inside, a complex is formed on the hair surface by the reaction of (A) and (B-2) to modify the keratinous fiber.

  The hair treatment agent disclosed in Patent Document 2 includes a first agent containing a polysaccharide having an anionic group that dissociates in water, and a second agent containing a surfactant having a cationic group that dissociates in water. Consists of. And, by treating the first agent and the second agent sequentially on the hair regardless of the order, a complex is formed on the hair by the reaction of the polysaccharide and the surfactant to obtain an excellent treatment effect. Yes.

  The hair conditioning agent disclosed in Patent Document 3 is composed of a first agent containing amino-modified silicone and a second agent containing methylhydrogen polysiloxane. Then, after treating the hair with the first agent, by treating with the second agent with or without intermediate water washing, a complex is formed by the reaction of amino-modified silicone and methylhydrogen polysiloxane, which is durable. A conditioning effect is obtained.

  As described above, the conventional multi-component hair treatment composition conditions hair by newly producing an active ingredient by some chemical change. In the case of such a multi-drug type, it takes time to apply a plurality of times. Therefore, it is inevitable that the consumer finds a higher effect than the single-drug type by the amount of time and effort.

  In this regard, the following knowledge has been obtained by the inventors' research. That is, in the above-described prior art, since the hair treatment process is accompanied by a chemical change, the effect appears extremely, but the sustainability of the effect is lacking. Specifically, when the hair after the hair treatment treatment gets wet with water, more specifically, the effect of the hair treatment is rapidly lost only by shampooing the hair after the treatment multiple times. In particular, when the hair treatment according to the above prior art is performed on damaged hair, the sustainability of the effect is remarkably lacking.

  The inventor of the present application has found that the lack of persistence of such a hair treatment effect is closely related to the swelling of hair when contacted with water. That is, if the degree of hair damage increases, the degree of hair swelling increases proportionally. Accordingly, the damaged hair becomes excessively swollen and soft when wet. Therefore, even if the active ingredient related to the hair treatment treatment of the above prior art is coated on the surface of the hair, if the hair swells excessively during shampooing etc., the active ingredient easily flows out and the hair feel (finger Not only worsen, but also due to the outflow of the coating layer, the hair dye flows out and becomes fading easily. In other words, if the swelling degree of the hair is reduced by the hair treatment, it can be judged that there is a damage reducing effect, and it is considered that the good hair feel and the anti-fading effect can be sustained.

  Therefore, the present invention promotes the fixing of treatment components to the hair through the response to the unique problem of suppressing swelling when the hair gets wet with water, thereby providing a good anti-fading effect and improving the finger according to the hair. It is a problem to be solved to realize an effect with high user satisfaction of giving and enhancing the sustainability of those effects.

  Based on the premise that each agent of the multi-component hair treatment is applied to the hair one after another, the inventor of this application mixes treatment components having different roles in the agent applied first and the agent applied later. I thought that the above problem could be solved. As a result of exploring such combinations of treatment ingredients, the present invention was completed. According to the inventor's understanding, in a single agent type hair treatment composition or a hair treatment composition in which each agent is mixed before applying to hair, even if it is a multi-agent type, all components are applied to the hair simultaneously. Therefore, it is difficult to solve the problems of the present invention.

(Configuration of the first invention)
The composition of the first invention of the present application for solving the above-mentioned problem is that the agent A comprising the first composition containing finely divided waxes,
The liquid is liquid at room temperature, and the hydrophilic part shown in the following (a) and the lipophilic part shown in the following (b) are each selected from an ester or an ether bonded by forming an ester bond or an ether bond. A multi-drug composition comprising a second agent comprising a second composition containing one or more,
It is a multi-component hair treatment composition that is applied according to the order in which the agent A is applied to the hair and then the agent B is applied repeatedly.
(A) polyhydric alcohol having 1 to 4 carbon atoms / oxygen atoms, polypolyhydric alcohol that is a condensate of the polyhydric alcohol, or sugar (b) unsaturated fatty acid or unsaturated higher alcohol In the first aspect of the present invention, “overly applying” means overcoating without rinsing, shampooing, rinsing or the like in the middle. However, it does not prevent the other agent constituting the multi-component hair treatment composition from being overcoated between the A agent and the B agent.

(Configuration of the second invention)
The structure of the second invention of the present application for solving the above-mentioned problem is that the multi-component hair treatment composition according to the first invention is such that the first composition contains 60% by mass or more of water and is microparticulated. It is contained in the form of an oil-in-water emulsion.

(Configuration of the third invention)
The structure of the third invention of the present application for solving the above-mentioned problem is one type in which the finely divided waxes are selected from cholesterol, phytosterol and lanolin in the multi-agent hair treatment composition according to the first invention or the second invention. That's it.

(Configuration of the fourth invention)
The structure of the fourth invention of the present application for solving the above problems is that, in the multi-agent hair treatment composition according to the first to third inventions, each of the hydrophilic part and the lipophilic part is ester-bonded one by one. Esters bonded by forming an ether bond, ether is unsaturated fatty acid polyhydric alcohol ester, unsaturated fatty acid polypolyhydric alcohol ester, polyoxyalkylene unsaturated fatty acid sugar alcohol ester, glycerin unsaturated higher alcohol glyceryl ether, or poly Oxyalkylene unsaturated higher alcohol ether.

(Structure of the fifth invention)
The structure of the fifth invention of the present application for solving the above-mentioned problems is as follows. In the multi-component hair treatment composition according to the first to fourth inventions, the lipophilic part is shown in (c) below.
(C) Unsaturated fatty acid or unsaturated higher alcohol having 10 to 20 carbon atoms and a degree of unsaturation of 1 to 3 valences (Structure of the sixth invention)
In order to solve the above-mentioned problems, the sixth invention of the present application is the multi-component hair treatment composition according to the first to fifth inventions, wherein the second composition is a plant having a melting point of 50 ° C to 55 ° C. Contains oils and fats.

  If the hair is treated with the multi-component hair treatment composition of the first invention, a good feel (through the fingers) of the hair can be obtained, and the swelling of the hair during shampooing can be suppressed to prevent the treatment components from flowing out. Therefore, the goodness of fingering is maintained. These effects are particularly remarkable for damaged hair. Furthermore, in hair that has undergone hair dyeing treatment, the treatment components that are well fixed on the hair can prevent the dye from flowing out by washing with water, such as shampoo, and can prevent the hair from fading continuously. it can.

  The reason why such an effect is obtained is estimated, but is considered as follows. That is, the finely divided wax in the first composition applied to the hair first penetrates into the hair and repairs the damaged portion, thereby suppressing the swelling of the hair. Further, the damaged portion is covered with the ester or ether in the second composition applied cumulatively thereon. It is speculated that the lipophilic part plays an important role in exhibiting the above effect that the lipophilic part is unsaturated and that it is a liquid ester or ether at room temperature having one hydrophilic part and one lipophilic part. The As described above, since swelling of the hair is suppressed during shampooing or the like, a good feel of the hair and an effect of preventing the fading of the hair can be continuously obtained. In addition, when the vegetable oil of melting | fusing point 50 to 55 degreeC is further contained in a 2nd composition, the effect of this invention is exhibited more effectively.

  The content of the first composition is not particularly limited as long as it contains finely divided waxes. However, as specified in the second invention, the content of the first composition contains 60% by mass or more of water, and the finely divided waxes are oil-in-water. What is contained in the form of a type emulsion is particularly preferable from the viewpoints of preventing aggregation of wax fine particles and promoting penetration of wax fine particles into hair.

  Furthermore, as specified in the third invention, the finely divided waxes are particularly preferably one or more selected from cholesterol, phytosterol and lanolin, and particularly cholesterol which is the original hair lipid.

  The ester or ether contained in the second composition is a polyhydric alcohol having a hydrophilic part of carbon atom number / oxygen atom number of 1 to 4, particularly 1 to 2, or a condensate of the polyhydric alcohol. It is preferably a polypolyhydric alcohol or a sugar, and the lipophilic part is an unsaturated fatty acid or unsaturated higher alcohol having a carbon number of 10 to 20 and an unsaturation degree of monovalent to trivalent. preferable. It is preferable that the second composition further contains a vegetable oil having a melting point of 50 ° C to 55 ° C.

  In short, according to the multi-component hair treatment composition of the present invention, it is possible to give a good anti-fading effect and finger improvement effect to the hair and to increase the sustainability of those effects.

  In addition, although some comparative examples in the example column at the end, that is, Comparative Examples 7, 9, and 10 (the case where the part corresponding to the lipophilic part is not unsaturated) has a low effect of suppressing hair swelling, it is amber. There are cases where the prevention effect, fingering, or the sustainability of these effects is relatively good. However, in these cases, in addition to the fact that the anti-fading effect and fingering, or the sustainability of those effects cannot be said to be sufficiently good, the hair swelling suppression effect is low, so it does not reduce hair damage, It has been found that the problem of lowering user satisfaction, “decrease in the elasticity of hair” is realized.

  Next, modes for carrying out the present invention will be described including the best mode.

[Multi-agent hair treatment composition]
The multi-component hair treatment composition according to the present invention includes an agent A composed of a first composition described later and an agent B composed of a second composition. That is, as long as the multi-agent hair treatment composition is composed of agent A and agent B, the multi-agent hair treatment composition may be a two-agent agent composed of only agent A and agent B, and one or more other agents. It may be a multi-drug formulation of 3 or more agents, for example, a 5 agent formulation, etc. When the multi-agent hair treatment composition is a multi-agent formula of three or more agents, the content of each agent other than agent A and agent B is not particularly limited as long as the object of the invention is not impaired.

(How to use multi-drug hair treatment composition)
The multi-component hair treatment composition is applied according to the order in which the agent A is applied to the hair and then the agent B is applied repeatedly. An appropriate amount of agent A and agent B may be applied to the hair, and the ratio of the amount of agent A and agent B applied to the hair is not particularly limited.

  The meaning of “overcoat” is as described above for the configuration of the first invention. Accordingly, when the multi-agent hair treatment composition is three or more agents, the agent A and the agent B can be used as long as no rinsing, shampoo, rinse, etc. are performed between the agent A and the agent B. (1) Apply to hair before agent A, (2) Apply to hair between agent A and agent B, (3) Apply to hair after agent B Is possible.

  As long as the above usage conditions are followed, the method of using a multi-component hair treatment composition containing three or more agents including agent A and agent B is not limited. For example, other agents to be applied first (other than agents A and B) Agent) and A agent to be applied next, or a water wash treatment between the application of agent B and the application of the next other agent, or mixing two or more other agents Then, it can be applied to the hair.

  Preferably, each agent constituting the multi-component hair treatment composition of the present invention is overcoated in a predetermined order without interposing a washing treatment between the respective applications, and further, the hair treatment composition After applying each agent to the hair, it is preferable to leave it for about 3 to 10 minutes, for example. During the standing, it is more preferable to heat to a temperature of about 40 ° C., for example.

  The method of using the multi-agent hair treatment composition of the present invention as described above is also a non-therapeutic cosmetic method using the multi-agent hair treatment composition.

[First composition]
The first composition as the agent A contains finely divided waxes. Although not limited, the first composition is preferably an aqueous composition containing 60% by mass or more, more preferably 65% by mass or more of water. In such an aqueous composition, the finely divided wax Preferably in the form of an oil-in-water emulsion by the use of a surfactant. Although the kind of surfactant is not limited, For example, a cationic surfactant is preferable. The amount of the surfactant used is not limited.

  Although the kind of wax is not limited, it is preferably at least one selected from cholesterol, phytosterol and lanolin, and cholesterol is particularly preferable. Other examples of waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, whale wax, rice bran wax, sugar cane wax, palm wax, montan wax, cotton wax, bayberry wax, ibota wax, kapok wax, shellac wax, and the like.

  The size of the wax fine particles contained in the first composition is preferably in the range of about 0.05 to 2 μm. If the fine particles are excessively smaller than the above range, it is difficult to fix to the hair and the effect is liable to be lowered. If the fine particles are excessive, it is difficult to penetrate the hair and the effect is also liable to be lowered. Further, the content of the finely divided waxes in the first composition is not limited, but is preferably about 0.01 to 1% by mass in the first composition. If the content is less than the above range, the effect of the wax fine particles described above with respect to the first invention tends to be insufficient, and if it is excessive, the hair feels stiff.

  In the first composition, in addition to the above components, various components that may be blended in the hair treatment composition are arbitrarily selected and blended within a range that does not impair the object of the present invention. Can do. Examples of such components include oily components other than waxes, hydrocarbons, polypeptides, protein hydrolysates, polymer compounds, cationic compounds, preservatives, chelating agents, fragrances, ceramides, vitamins, etc. Can do.

  Examples of oily components other than waxes include polyhydric alcohols, higher alcohols, higher fatty acids, and silicones. Examples of the hydrocarbon include α-olefin oligomers, microcrystalline wax, petrolatum and the like. Examples of the polymer compound include a cationic polymer compound, an anionic polymer compound, an amphoteric polymer compound, and a water-soluble polymer compound.

[Second composition]
The second composition, which is agent B, is liquid at room temperature, and the hydrophilic part shown in (b) below and the lipophilic part shown in (b) below each form an ester bond or an ether bond. 1 type or more chosen from ester and ether couple | bonded together.
(A) polyhydric alcohol having 1 to 4 carbon atoms / oxygen atoms, polypolyhydric alcohol that is a condensate of the polyhydric alcohol, or sugar (b) unsaturated fatty acid or unsaturated higher alcohol Ether is a molecule in which a hydrophilic part and a lipophilic part are connected by an ester bond or an ether bond. Therefore, on the condition that the effects of the present invention are not inhibited, there may be other ester bonds and ether bonds in the hydrophilic part and the lipophilic part.

  The origin of the said ester and ether is not specifically limited, A synthetic product may be used and what refine | purified from the crude refined | purified material may be used. However, the ester and ether must be liquid at room temperature. Since one hydrophilic part and one lipophilic part form an ester bond or an ether bond, the chemical structure of the molecule takes the structure of a dehydration condensate of both. Therefore, for example, a molecule having a structure in which two lipophilic parts are dehydrated and condensed with respect to one hydrophilic part does not correspond to the above ester or ether. An ester bond can be formed by dehydration condensation of a carboxyl group and a hydroxyl group, and an ether bond can be formed by dehydration condensation of two hydroxyl groups. When the ester of the present invention is obtained by dehydration condensation, either the hydrophilic part or the lipophilic part may have a carboxyl group, but the lipophilic part preferably has a carboxyl group.

  Although content of the said ester and ether in a 2nd composition is not specifically limited, 1-5 mass% is preferable.

  The polyvalent in the polyhydric alcohol means having two or more hydroxyl groups. The number of carbon atoms of the polyhydric alcohol is not particularly limited, and is a polyhydric alcohol in which one oxygen atom is present per 1 to 4 carbon atoms, preferably 1 to 2 carbon atoms. The polyhydric alcohol is a concept including a sugar alcohol such as sorbitol in addition to ethylene glycol, propylene glycol, and glycerol.

  The polypolyhydric alcohol is a polymer of the polyhydric alcohol described above. The polypolyhydric alcohol may be a polymer of one or more polyhydric alcohols. Examples thereof include polyethylene glycol, polypropylene glycol, polyglycerol, a condensate of glycerol and polyethylene glycol or polypropylene glycol, polyoxyethylene sorbitan, and the like.

  The sugar refers to aldose or ketose. Although carbon number is not specifically limited, 3-6 are preferable and 6 is especially preferable.

  The hydrophilic portion described above may contain a hetero atom or may have a substituent on the condition that the effect of the present invention is not impaired.

  The lipophilic part is characterized by being unsaturated. Although carbon number of an unsaturated fatty acid and unsaturated higher alcohol is not specifically limited, It is preferable that it is 10-20, It is more preferable that it is 16-20, It is especially preferable that it is 18. The degree of unsaturation of the lipophilic part is not particularly limited, but is preferably monovalent to trivalent, and particularly preferably monovalent. The formation of a double bond is not particularly limited by cis and trans. A particularly preferred lipophilic part is oleic acid or oleyl alcohol.

  The above-described lipophilic part may contain a hetero atom or may have a substituent on the condition that the effect of the present invention is not impaired. When the lipophilic part has an oxygen atom, it is necessary to maintain hydrophobicity. That is, those having a large number of oxygen atoms corresponding to the polyhydric alcohol do not correspond to the lipophilic part.

  Examples of these components include unsaturated fatty acid polyhydric alcohol esters such as oleic acid and propylene glycol esters (oleic acid PG), unsaturated fatty acid polyesters such as polyglyceryl oleate-10 and PEG-10 oleate. Polyoxyalkylene unsaturated higher grades such as polyhydric alcohol esters, (polyoxyalkylene) unsaturated fatty acid sugar alcohol esters such as sorbitan oleate and polysorbate-80, glycerin unsaturated higher alcohol glyceryl ethers such as ceralkyl alcohol, and oleth-2 Examples include alcohol ethers.

  Although vegetable oil and fat of melting | fusing point 50 to 55 degreeC is not limited, For example, there exists hydrogenated palm oil. Moreover, hardened vegetable fats and oils can also be illustrated preferably.

  In the second composition, in addition to the above-described components, various components that may be blended in the hair treatment composition are arbitrarily selected and blended within a range that does not impair the object of the present invention. Can do. As such components, the above-mentioned polyhydric alcohols, higher alcohols, higher fatty acids, oily components including fats and oils, hydrocarbons, surfactants, polypeptides, protein hydrolysates, polymer compounds, cations Examples of such compounds include silicone compounds, preservatives, chelating agents, fragrances, ceramides, vitamins, pigments, amino acids, and water.

  The dosage form of the second composition is preferably cream, emulsion, liquid, foam, paste, gel or mist, particularly preferably cream or emulsion.

  Examples of the present invention and comparative examples will be described below. The technical scope of the present invention is not limited by the following examples and comparative examples.

[Preparation of multi-agent hair treatment composition]
The first agent (corresponding to the agent A of the present invention) and the first agent of the multi-agent hair treatment composition according to Examples 1 to 9 shown in Table 1 at the end and Comparative Examples 1 to 11 shown in Table 2 Two agents (corresponding to the agent B of the present invention) were prepared according to a conventional method. In Comparative Example 1, only the first agent was prepared, and in Comparative Example 2, only the second agent was prepared. The 1st agent which concerns on each Example and a comparative example was made into the form of the oil-in-water emulsion using the behentrimonium chloride which is a cationic surfactant. The second agent was also in the form of an emulsion. In the columns of “first agent” and “second agent” in Tables 1 and 2, the numerical value indicating the content of the component is a notation of mass% of the component in the first agent or the second agent.

  Oleic acid PG, oleic acid polyglyceryl-10, oleic acid PEG-5 glyceryl, oleic acid PEG-10, polysorbate-80, oleic acid sorbitan, ceralkyl alcohol, oleth-2 and oleth-10 are all liquid at room temperature is there.

  The part corresponding to the lipophilic part of stearic acid PG, polysorbate-60 and steareth-2 is not unsaturated. Polyglyceryl-10 dioleate has two lipophilic parts. Ores-20 is not liquid at room temperature.

[Evaluation hair]
Hair that has not been subjected to chemical treatment such as perm or hair color is treated with a commercially available bleach agent (“Promaster EX LT” manufactured by Hoyu Co., Ltd.), and then a permanent agent (“Lutea manufactured by Hoyu Co., Ltd.”). TG "] perm by a conventional method and then dried. Then, the hair bundle sample for a test was produced by dye | staining the hair bundle brown using an oxidative hair dye ["Promaster EX B 7/6" by Hoyu Co., Ltd.].

〔Evaluation methods〕
After wetting the hair for evaluation with water, appropriate amounts of the first and second agents of the multi-component hair treatment composition according to each of Examples and Comparative Examples were applied. In Comparative Example 1, only the first agent was applied, and in Comparative Example 2, only the second agent was applied. Except for Comparative Examples 1 and 2, the procedure for applying the first agent and the second agent is shown in the “Usage Methods” column of Tables 1 and 2 for each Example and Comparative Example. In this column, the notation “A / B” indicates that the agent B was applied after the agent A was applied. The notation “AWB” indicates that after the A agent was applied, the B agent was applied after washing with water. The notation “AB” indicates that a mixture of equal amounts of A agent and B agent was applied at a time. After finishing these applications, the hair for evaluation was left in a constant temperature bath at 40 ° C. for 15 minutes, and then thoroughly washed with water, and then dried with a dryer.

[Evaluation items and evaluation criteria]
For the hairs for evaluation according to the examples and comparative examples treated according to the procedure shown in the above “evaluation method”, the anti-fading effect, the goodness of fingering, the durability of the anti-fading effect, the durability of the goodness of fingering and swelling The inhibitory effect was evaluated according to the following evaluation criteria.

(Anti-fading effect, good fingering)
Regarding the anti-fading effect and the goodness of fingering, the evaluation panel treated in accordance with the procedure shown in “Evaluation Method” is evaluated by 20 panelists in the choice of “good” or “not good”. , 20 out of 20 panelists who answered “good” have an evaluation score of 5, 17-13 have an evaluation score of 4, and 12-9 have an evaluation score of 3, 8 The case of up to 5 people was evaluated as 2, and the case of 4 people or less was rated as 1. The evaluation results are shown in the “Fade-preventing effect” and “Good fingering” sections in the “Evaluation” column of Tables 1 and 2.

(Persistence of anti-fading effect, sustainability of fingering)
Regarding the durability of the anti-fading effect and the sustainability of fingering, 50 ° C. sodium lauryl sulfate corresponding to repeated shampooing for about 3 weeks is further applied to the hair for evaluation treated according to the procedure shown in “Evaluation Method”. For evaluation hair that has been immersed in a 1% aqueous solution for 6 minutes, then washed thoroughly with water and then dried with a dryer, evaluation is performed in the same manner as in the above “anti-fading effect” and “goodness of fingering”. It was. The evaluation results are shown in the sections of “Sustainability (fading prevention effect)” and “Sustainability (goodness of fingering)” in the “Evaluation” column of Tables 1 and 2. Therefore, the evaluation of the sustainability can be judged by comparing the evaluation score with the evaluation score of “fading prevention effect” or “goodness of fingering” in the same example and comparative example. The reason why the evaluation points are not entered in Comparative Examples 1 and 2 is that the original evaluation of the anti-fading effect and the goodness of fingering is low, so it is determined that the evaluation is not worthy of these sustainability evaluations.

(Swelling suppression effect)
An attempt to evaluate the degree of swelling of hair in relation to damaged hair and hair treatment effects is extremely rare, but if the degree of swelling of hair decreases, it can be considered that it has a damage reducing effect, so the degree of damage depends on the degree of swelling of hair. Evaluated. The following method was devised as a specific method for evaluating the effect of inhibiting hair swelling. This method calculates the reduction rate of the degree of hair swelling based on the volume ratio, assuming that the hair has a round cross section.

  That is, first, the hair for evaluation before being subjected to the treatment shown in “Evaluation Method” is observed with an optical microscope in a dry state, and the diameter (R1) is measured. Next, the hair whose diameter (R1) is measured is swelled with water and observed with an optical microscope, and the diameter (R2) is measured. Furthermore, the hair for evaluation after processing according to the procedure shown in the “evaluation method” is observed with an optical microscope in a dry state, and the diameter (R3) is measured. Next, the hair whose diameter (R3) is measured is swelled with water and observed with an optical microscope, and the diameter (R4) is measured. The measurement values R1 to R4 thus obtained are introduced into the following formula, and the reduction rate of the degree of hair swelling is calculated.

Reduction rate of hair swelling degree = 100-100 × [(R4 / R3) ² / (R2 / R1) ² ]
When the reduction rate of the hair swelling degree calculated in this way is 15% or more, the evaluation score for the swelling suppression effect is 5, and similarly, the evaluation score is 4% or more and 7% or more when it is 11% or more and less than 15%. The case of less than 11% was evaluated point 3, 3% or more and less than 7% was evaluated point 2, and the case of less than 3% was set as evaluation point 1. The evaluation results are shown in the section of “Swelling suppression” effect in the “Evaluation” column of Tables 1 and 2.

  According to the present invention, there is provided a multi-component hair treatment composition that imparts a good anti-fading effect and finger-improvement effect to hair and increases the durability of those effects.

Claims (6)

A agent comprising a first composition containing finely divided waxes;
The liquid is liquid at room temperature, and the hydrophilic part shown in the following (a) and the lipophilic part shown in the following (b) are each selected from an ester or an ether bonded by forming an ester bond or an ether bond. A multi-drug composition comprising a second agent comprising a second composition containing one or more,
A multi-component hair treatment composition, which is applied in the order of applying the agent B to the hair and then applying the agent B in layers.
(A) polyhydric alcohol having 1 to 4 carbon atoms / oxygen atoms, polypolyhydric alcohol that is a condensate of the polyhydric alcohol, or sugar (b) unsaturated fatty acid or unsaturated higher alcohol The multi-component hair treatment composition according to claim 1, wherein the first composition contains 60% by mass or more of water, and the finely divided waxes are contained in the form of an oil-in-water emulsion. object. The multi-component hair treatment composition according to claim 1 or 2, wherein the micronized wax is one or more selected from cholesterol, phytosterol and lanolin. An ester in which each of the hydrophilic part and the lipophilic part is bonded together by forming an ester bond or an ether bond, and the ether is an unsaturated fatty acid polyhydric alcohol ester, an unsaturated fatty acid polypolyhydric alcohol ester, a polyoxyalkylene-free ester. The multi-component hair treatment composition according to any one of claims 1 to 3, which is a saturated fatty acid sugar alcohol ester, a glycerin unsaturated higher alcohol glyceryl ether, or a polyoxyalkylene unsaturated higher alcohol ether. . The multi-component hair treatment composition according to any one of claims 1 to 4, wherein the lipophilic part is as shown in (c) below.
(C) Unsaturated fatty acid or unsaturated higher alcohol having 10 to 20 carbon atoms and an unsaturation degree of 1 to 3 The multi-component hair treatment composition according to any one of claims 1 to 5, wherein the second composition further contains a vegetable oil having a melting point of 50C to 55C.