JP2017081837A - Hair shampoo - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hair shampoo which can suppress exfoliation of the cuticle when extending the hair associated with brushing, blowing, ironing, and the like in daily hair care behavior, and which can improve the luster and hair-arranging property at the time of finishing.SOLUTION: An aqueous hair shampoo contains component A: 0.5 mass% or more to 12 mass% or less of an ether sulfate type anionic surfactant; component B: 1 mass% or more to 6 mass% or less of an amino acid type surfactant; component C: 0.1 mass% or more to 5 mass% or less of succinic acid or a salt thereof; and component D: cationic polymer as well as water.SELECTED DRAWING: None

Description

  The present invention relates to a hair cleanser.

As a technique regarding the cleaning agent used for skin and hair, there are those described in Patent Documents 1 to 4.
Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-26976) has a paste-solid form even in a wide temperature range, particularly at a high temperature, has good foaming, and has a good feeling of use with no irritation to the skin. In addition, as a technique for providing a cleaning composition having excellent stability, one or more selected from an acyl salt type anionic surfactant having a specific structure, an inorganic salt, an organic acid, and an organic salt And a paste-form or solid-state detergent composition containing polyethylene glycol and water and having a total electrolyte molar concentration within a specific range.

  Patent Document 2 (Japanese Patent Laid-Open No. 11-80784) provides a liquid detergent composition that has mild mild irritation to skin and high mildness, and also has excellent cleaning power and stability against discoloration during storage. Techniques for are described. That is, the same document specifies a surfactant containing a nitrogen atom, a surfactant containing a sulfur atom, and a specific organic acid in a liquid detergent composition containing a specific amount of the surfactant. It is described that the above-mentioned effect is obtained by including the amount.

  Patent Document 3 (JP-A-8-143899) describes an aqueous liquid cleaning agent in which a former container is filled with a cleaning solution containing specific amounts of an amino acid surfactant and a salt. This literature describes that such an aqueous liquid detergent does not increase in viscosity at low temperature, is easy to extrude from a container even at low temperature, and a uniform foam is obtained.

  Patent Document 4 (Japanese Patent Application Laid-Open No. 54-50513) discloses a liquid shampoo that has a mild action on hair and skin, and also has a bubbling power, a detergency, and a good feel and feel during and after shampooing. As a technique for providing a composition, a liquid shampoo composition containing an N-acyl glutamate having a specific structure and at least one acid selected from the group consisting of an organic carboxylic acid and phosphoric acid as a main ingredient is described. Yes.

JP 2004-26976 A Japanese Patent Laid-Open No. 11-80784 JP-A-8-143899 JP-A-54-50513

  By the way, hair is constantly affected by sunlight, such as ultraviolet rays, heat, and drying, and is also damaged by daily hair washing, brushing, dryer heat, and the like. Also, in recent years, it has become common to enjoy the fashion by changing the appearance of the hair, such as freely changing the hair color (coloring, etc.) and changing the hairstyle by chemical treatment (perm, etc.). It is known that when the frequency of such treatment is increased, damage is accumulated in the hair, split ends and cut hairs are generated, and the ends of the hair are crushed.

  Colors and perms are essential for consumers who want to change the appearance of their hair and enjoy fashion, and during daily hair care activities, the hair is stretched by brushing, blowing, and ironing. When hair is stretched, a phenomenon that the cuticle is turned up (lift up) is observed, and it is considered that exfoliation of the cuticle is promoted. Accordingly, there is a need for a hair cleaning agent that can suppress lift-up that occurs when a force that stretches hair is applied, and that can suppress cuticle peeling.

  In this regard, Patent Documents 1 to 4 described above have no room for improvement in that no description is given regarding the suppression of peeling of the cuticle when the hair is stretched, and the effect is not sufficient.

  The present invention has been made in view of such circumstances, and in daily hair care behavior, it suppresses the peeling of the cuticle when the hair is stretched due to brushing, blowing, ironing, etc., and the gloss and unity of the finished product Provided is a hair cleansing agent that can improve hair quality.

  The present inventors have found that the above-described problems can be solved by using a specific surfactant, a specific organic acid, and a specific polymer in combination.

The present invention provides a hair cleansing agent comprising the following components (A) to (D) and water.
(A) Ether sulfate type anionic surfactant 0.5 mass% to 12 mass% (B) Amino acid surfactant 0.5 mass% to 6 mass% (C) Succinic acid or salt thereof 0.1 % By mass or more and 5% by mass or less (D) Cationic polymer

  Moreover, this invention provides the washing | cleaning method of hair including applying the hair washing agent in the said this invention to hair, and washing away.

  According to the present invention, it is possible to provide a hair cleansing agent that can suppress the peeling of the cuticle when the hair is stretched due to brushing, blowing, ironing, etc. in daily hair care behavior and can improve the gloss and unity of the finished product. can do.

Hereinafter, embodiments of the present invention will be described with specific examples of each component. Each component can be used alone or in combination of two or more.
Moreover, in this specification, pH means the measured value (glass electrode measuring method) at 25 degreeC and diluting 20 times.

(Ingredient (A))
Component (A) is an ether sulfate type anionic surfactant. Specific examples of the component (A) include polyoxyethylene alkyl ether sulfate or polyoxyethylene alkenyl ether sulfate represented by the following general formula (1).
R ¹ O (CH ₂ CH ₂ O) _v SO ₃ M (1)
(In the above general formula (1), R ¹ represents an alkyl group or alkenyl group having 10 to 18 carbon atoms, and M represents a cation derived from an alkali metal, alkaline earth metal, ammonium, alkanolamine, or basic amino acid. , V is the average number of moles of ethylene oxide added, and represents a number of 0.5 to 5 in terms of mass average.)

Among these, from the viewpoint of achieving both quick foaming and good foam feel, it is preferable that R ¹ in the general formula (1) is an alkyl group having 12 to 14 carbon atoms. Moreover, the average added mole number v of ethylene oxide becomes like this. Preferably it is 0.5 or more and 4 or less, More preferably, it is 0.9 or more and 4 or less, More preferably, it is 1 or more and 3 or less. Furthermore, polyoxyethylene alkyl ether sulfates in which M is ammonium or sodium are preferred.

  The component (A) is preferably polyoxyethylene alkyl ether sulfate, more preferably polyoxyethylene (average added mole number 0.5 to 3) decyl ether sulfate, polyoxyethylene (average added mole number). 0.5-3) Containing lauryl ether sulfate, polyoxyethylene (average added mole number 0.5-3) myristyl ether sulfate, polyoxyethylene (average added mole number 0.5-3) cetyl ether sulfate One or two or more selected from the group, and preferable salts include alkali metals such as sodium and potassium; ammonium and triethanolammonium.

  Component (A) may be used singly or in combination of two or more, and the content in the hair cleaning agent is 0. 0% relative to the entire hair cleaning agent from the viewpoint of cuticle peeling suppression. 5% by mass or more, preferably 3% by mass or more, more preferably 5% by mass or more, further preferably 7% by mass or more, and 12% by mass or less, preferably 10% by mass or less, more preferably 9%. It is below mass%.

(Ingredient (B))
Component (B) is an amino acid surfactant.
By using the component (B) in combination with the component (A), it is possible to improve the slipperiness during washing while giving excellent cleaning properties to the hair cleaning agent. In addition, by using the component (B), it is possible to suppress the swelling of the tissue at the time of washing and improve the cuticle peeling suppressing effect.

Examples of the component (B) include glutamic acid surfactants, aspartic acid surfactants, alanine surfactants, glycine surfactants, sarcosine surfactants, and taurine surfactants.
Among these, coconut oil fatty acid acyl-L-glutamic acid, lauroyl-L-glutamic acid, myristoyl-L-glutamic acid, stearoyl-L-glutamic acid and salts thereof (for example, sodium N-lauroylglutamate) are used as glutamic acid surfactants. Can be mentioned.
Examples of aspartic acid surfactants include lauroyl-L-aspartic acid and salts thereof.
Specific examples of the alanine surfactant include coconut oil fatty acid methylalanine, lauroylmethylalanine, myristoylmethylalanine, and salts thereof.
Specific examples of the glycine surfactant include coconut oil fatty acid acylglycine and salts thereof.
Specific examples of the sarcosine surfactant include coconut oil fatty acid sarcosine, lauroyl sarcosine, and salts thereof.
Specific examples of the taurine surfactant include N-coconut oil methyl taurine sodium and lauroyl methyl taurine sodium.
Specific examples of salts in these surfactants include alkyl metals such as sodium and potassium; alkaline earth metals such as calcium and magnesium; ammonium; organic amines such as monoethanolamine, diethanolamine and triethanolamine. Can be mentioned.

  Component (B) is preferably one or more selected from the group consisting of glutamic acid-based surfactants and taurine-based active agents, and more preferably one or two selected from glutamic acid-based surfactants. More than a seed.

  Component (B) may be used singly or in combination of two or more, and the content in the hair cleanser is the entire hair cleanser from the standpoint of cuticle peeling inhibitory effect and gloss / grouping. Is 0.5% by mass or more, preferably 1% by mass or more, more preferably 1.5% by mass or more, and 6% by mass or less, preferably 5% by mass or less, more preferably Is 4% by mass or less.

  In addition, from the viewpoint of the effect of suppressing the peeling of the cuticle during hair drawing and the ability to clean dirt, the mass ratio ((A) / (B)) of component (A) to component (B) in the hair cleaning agent is preferably 1. It is larger, more preferably 3.5 or more, further preferably 6 or more, and preferably 12 or less, more preferably 11 or less, still more preferably 10 or less.

(Ingredient (C))
Component (C) is succinic acid or a salt thereof.
In the present embodiment, the cuticle produced during daily hair care behavior is obtained by using the component (C) in combination with the components (A) and (B) described above and the component (D) described later in the hair cleanser. Separation can be effectively suppressed. Moreover, since the hair can be maintained in a healthy state by using the components (A) to (D) in combination, for example, the deterioration of the feel of the hair is reduced, and the gloss and cohesiveness of the finish is improved. It becomes possible to do.

  The content of the component (C) in the hair cleaning agent is 0.1% by mass or more based on the total amount of the hair cleaning agent from the viewpoint of the effect of suppressing the peeling of the cuticle at the time of stretching the hair and imparting gloss to the hair. Preferably it is 0.5 mass% or more, More preferably, it is 1 mass% or more, More preferably, it can be 3 mass% or more. Further, from the viewpoint of the stability of the hair cleaning agent, the content of the component (B) is 5% by mass or less, preferably 3.5% by mass or less, based on the entire hair cleaning agent.

(Component (D))
Component (D) is a cationic polymer. The cationic polymer refers to a polymer having a cationic group or a group that can be ionized to a cation, and includes an amphoteric polymer that becomes cationic as a whole.
By using the component (D) in combination with the components (A) to (C) described above, the formulation stability of the hair cleaning agent can be improved. Moreover, the cohesiveness at the time of finishing after washing | cleaning and drying hair etc. can be improved.

Specific examples of the component (D) include water-soluble compounds containing an amino group or an ammonium group in the side chain of the polymer chain, or a diallyl quaternary ammonium salt as a constituent unit.
More specifically, as component (D), cationized polysaccharides such as cationized cellulose, cationized starch, cationized guar gum, cationized tara gum, cationized fenugreek gum, and cationized locust bean gum; Examples of the polymer or copolymer include quaternized polyvinyl pyrrolidone.
Component (D) is preferably a cationized polysaccharide, more preferably one or more cationized polysaccharides selected from the group consisting of cationized cellulose and cationized guar gum.

  Among these, as cationized cellulose, what is represented by following General formula (2) is preferable.

(In the general formula (2), A represents a residue of an anhydroglucose unit, a is an integer of 50 or more and 20000 or less, and each R ² is a substituent represented by the following general formula (3). Is shown.)

(In the general formula (3), R ′ and R ″ are each independently an alkylene group having 2 or 3 carbon atoms, b is an integer of 0 or more and 10 or less, c is an integer of 0 or more and 3 or less, and d is 0 or more. An integer of 10 or less, R ′ ″ is an alkylene or hydroxyalkylene group having 1 to 3 carbon atoms, R ³ , R ⁴ and R ⁵ are the same or different, and an alkyl group or aryl having 10 or less carbon atoms Represents a group, or an aralkyl group, or may contain a nitrogen atom in the formula to form a chlorine ring, and Z ₁ is a monovalent anion (chlorine, bromine, iodine, sulfuric acid, sulfonic acid, methylsulfuric acid) , Phosphoric acid, nitric acid, etc.)

The cation substitution degree of the cationized cellulose represented by the general formula (3) is preferably 0.01 or more and 1 or less. That is, in the general formula (3), the average value of c per anhydroglucose unit is preferably 0.01 or more and 1 or less, and more preferably 0.02 or more and 0.5 or less. Moreover, it is preferable that the sum total of b + d is 1 or more and 3 or less on average. The degree of substitution is preferably 1 or less from the viewpoint of reaction yield.
For example, R ³ , R ⁴ and R ⁵ are all CH ₃ groups, or two of R ³ , R ⁴ and R ⁵ are short-chain alkyl groups such as CH ₃ groups, and the other is carbon. Those having a long chain alkyl group of several tens to 20 are preferable. The molecular weight of the cationized cellulose used here is preferably about 100,000 or more and 8000000 or less.

  Examples of commercially available cationized cellulose include Poise C-60H (manufactured by Kao Corporation), Poise C-80H (manufactured by Kao Corporation), Caticello L-150 (manufactured by Kao Corporation), polymer JR-400 (manufactured by Dow Chemical Company), and the like. Is mentioned.

  Component (D) has a main chain derived from anhydroglucose represented by the following general formula (4), and the degree of substitution of the cationized ethyleneoxy group is 0.01 or more and 2.5 or less, A cationized hydroxypropyl cellulose having a substitution degree of propyleneoxy group of 0.1 or more and 2.8 or less may be included.

(In the general formula (4), R ⁶ , R ⁷ and R ⁸ are each independently a substituent having a cationized ethyleneoxy group and a propyleneoxy group represented by the following general formula (5) or (6). N represents the average degree of polymerization of anhydroglucose and is 50 or more and 5000 or less.)

(In the above general formulas (5) and (6), ^one of Y ¹ and Y ² is a hydrogen atom, the other is a cationic group represented by the following general formula (7), and PO is a propyleneoxy group P represents the number of cationized ethyleneoxy groups (—CH (Y ¹ ) —CH (Y ² ) —O—) contained in the general formula (5) or (6), and q represents the general formula ( 5) or (6) indicates the number of propyleneoxy groups (—PO—), and p and q are each independently 0 or a positive integer. The order of addition of the ethylene oxideoxy group and the propyleneoxy group is not limited, and when p and / or q is 2 or more, either a block bond or a random bond may be used.)

(In the general formula (7), R ⁹ , R ¹⁰ and R ¹¹ each independently represents a linear or branched alkyl group having 1 to 3 carbon atoms, and Z ₂ ⁻ represents an anionic group.)

  Of the components (D), the cationized guar gum is preferably represented by the following general formula (8).

(In the above general formula (8), D is a guar gum residue, R ¹² is an alkylene group or a hydroxyalkylene group, R ¹³ , R ¹⁴ and R ¹⁵ are the same or different, and an alkyl group having 10 or less carbon atoms. , An aryl group, or an aralkyl group, or may contain a nitrogen atom in the formula to form a heterocyclic ring, and Z ₃ ^- represents an anion (chlorine, bromine, iodine, sulfuric acid, sulfonic acid, methylsulfuric acid, Phosphoric acid, sulfuric acid, etc.), and f represents a positive integer.)

  The degree of cation substitution of the cationized guar gum derivative is preferably 0.01 or more and 1 or less, more preferably 0.02 or more and 0.5 or less of a cationic group introduced into one sugar unit. . This type of cationic polymer is described in JP-B-58-35640, JP-B-60-46158 and JP-A-58-53996. For example, commercially available products include Rhodia Inc. .) Under the trade name Jaguar, including Jaguar C-13C, Jaguar C-14SK and the like. In addition, Laborum gum CG-M manufactured by Dainippon Sumitomo Pharma Co., Ltd. can be mentioned.

  The content of the component (D) in the hair cleaning agent is preferably 0.01% by mass or more with respect to the entire hair cleaning agent from the viewpoint of improving the texture of the hair after washing and after drying. More preferably, it is 0.1% by mass or more, and further preferably 0.2% by mass or more. Further, from the viewpoint of making the viscosity of the cleaning base preferable, the content of the component (D) is preferably 2.5% by weight or less, more preferably 1.2% by weight with respect to the entire hair cleaning agent. Hereinafter, it is more preferably 1% by mass or less.

Further, in the hair cleansing agent of the present embodiment, the content ratio (mass ratio) of the components (B), (C), and (D) is such that the effect of suppressing cuticle peeling at the time of hair stretching, improvement of dirt cleaning properties, and From the viewpoint of improving the balance of the effect of improving the gloss and cohesiveness of the washed-out, the following is preferable.
That is, the mass ratio ((B) + (C)) / (D) of the sum of component (B) and component (C) to component (D) in the hair cleansing agent is preferably 1.0 or more, and more Preferably it is 2.0 or more, More preferably, it is 3.0 or more, Preferably it is 15.0 or less, More preferably, it is 12.0 or less, More preferably, it is 10.0 or less.

More specifically, the hair cleanser in the present embodiment is an aqueous hair cleanser.
That is, the hair cleanser in this embodiment further contains water. As water, ion exchange water, distilled water, or the like can be used.
The content of water in the hair cleanser can be, for example, the remainder excluding components other than water in the hair cleanser. The water content is preferably 50% by mass or more, more preferably 60% by mass or more, and still more preferably 74.5% by mass or more with respect to the entire hair cleaning agent. Moreover, 98.89 mass% or less is preferable, 98 mass% or less is more preferable, and 95 mass% or less is further more preferable.

Next, the pH of the hair cleaning agent will be described.
In the hair cleansing agent of this embodiment, from the viewpoint of the stain removal performance of the hair cleansing agent, the pH at 25 ° C. when diluted 20 times with water is preferably 6.5 or less, more preferably 6 or less, and even more preferably. Is 5.5 or less. Further, from the same viewpoint as described above, the pH is preferably 2 or more, more preferably 3 or more, and further preferably 3.5 or more.

Moreover, in this embodiment, the hair cleaning agent may contain components other than the component mentioned above.
For example, the hair cleansing agent of the present embodiment further includes an anionic surfactant other than components (A) and (B), a nonionic interface, in order to improve the cleaning performance and obtain a desired effect on the finish after drying, etc. Activators, cationic surfactants, amphoteric surfactants, silicones, other oils, and the like may be included.

  Of these, specific examples of anionic surfactants other than components (A) and (B) include sulfuric acid-based materials other than component (A), sulfonic acid-based materials, carboxylic acid-based materials, and phosphoric acid-based materials. Is mentioned. More specifically, as anionic surfactants other than components (A) and (B), sulfate-type anions other than component (A) such as alkyl sulfates, alkenyl sulfates, and alkylenealkylphenyl ether sulfates. Surfactants; sulfosuccinic acid alkyl ester salts, polyoxyalkylene sulfosuccinic acid alkyl ester salts, sulfonic acid type anionic surfactants such as alkane sulfonates; carboxylate type anionic surfactants such as ether carboxylates . Of these, alkyl sulfates and alkenyl sulfates are preferred.

  Moreover, you may contain acids other than the said component (C) as a pH adjuster in the hair cleaning agent in this embodiment. Examples of such a pH adjuster include inorganic acids such as hydrochloric acid; and organic acids other than the above component (C). Organic carboxylic acids such as lactic acid, malic acid, and citric acid can also be used. Moreover, you may use bases, such as sodium hydroxide, potassium hydroxide, ammonium chloride, together with these acids as another pH adjuster.

  In the hair cleansing agent of the present embodiment, in addition to the above components, components used in normal hair cleansing agents can be appropriately blended depending on the desired effect. Examples of such optional components include anti-dandruff agents, vitamin agents, bactericides, anti-inflammatory agents (glycyrrhizic acid, glycyrrhetinic acid, derivatives thereof, etc.), preservatives, chelating agents, moisturizers (sorbitol, panthenol, etc.) , Colorants (dyes, pigments, etc.), extracts (eucalyptus polar solvent extract, conchiolin or hydrolyzate thereof, honey, royal jelly, protein obtained from silk or hydrolyzate thereof, obtained from legume seeds Protein-containing extract, Panax ginseng extract, Rice germ extract, Hibamata extract, Aloe extract, Lotus extract, Pomegranate extract, Novara extract, Chamomile extract, Licorice extract, Moon peach leaf extract, Chlorella extract Etc.), pearlizing agents such as titanium oxide, fragrances, UV absorbers, antioxidants, shea butter, rose water, orange oil, euca Oil and the like.

  The hair cleansing agent of the present embodiment is produced, for example, by mixing components (A) to (D) and other components as appropriate and dissolving them in water to make them uniform. Specifically, component (D) is added to water heated to about 70 to 100 ° C. and dissolved or uniformly dispersed, and then components (A) to (C) are added and stirred to dissolve. Alternatively, components (A) to (C) are added to water heated to about 70 to 100 ° C. and stirred to dissolve, and then component (D) is added and dissolved or uniformly dispersed. Then, it is preferable to cool to 30 degrees C or less. The pH adjustment with an acid or base other than the component (C) is preferably performed at 40 ° C. or lower.

  The form of the hair cleansing agent of the present embodiment can be appropriately selected from liquid form and gel form, but is preferably liquid form using water or water and lower alcohol as a solvent.

Moreover, the hair washing method using the hair washing agent in the present embodiment includes, for example, applying the hair washing agent to the hair and washing it off.
In the hair cleaning agent in this embodiment, since it uses combining (A)-(D), it can suppress peeling of a cuticle. For example, in daily hair care behavior, it is possible to suppress the peeling of the cuticle that progresses when a force to stretch the hair is applied by using a heating device such as brushing, blowing, ironing, etc. It can also be maintained. In addition, by using the hair cleanser in the present embodiment, it is possible to reduce the deterioration of touch and to improve the gloss and unity of the finish.

  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.

(Examples 1-8, Comparative Examples 1-5)
A shampoo having the composition shown in Table 2 was prepared according to the following method, and the obtained sample solution was evaluated. Evaluation methods and evaluation criteria are shown below.

(Shampoo manufacturing method)
The component (A) polyoxyethylene (1) ammonium lauryl ether sulfate was added to water heated to about 80 ° C. and stirred to make it uniform. Next, components (B) and (C) or (C ′) were added and completely dissolved therein, and then component (D) uniformly dispersed in a part of water was added and dissolved. Then, it cooled to room temperature and adjusted pH to 6.0 using hydrochloric acid (25 degreeC).

(Preparation of hair sample for evaluation)
Using 10 g of Japanese hair that has undergone a beauty treatment (treated 3 times with a PREAIA foam bleach hybrid manufactured by Kao Corporation, 3 weights of hybrid solution per hair weight 1, treatment time 40 minutes / time) A hair bundle having a hair length of about 30 cm was made by sandwiching hair between two 7 cm plastic plates and fixing with a two-component adhesive, and the hair bundle was evaluated according to the following procedure.

(Evaluation method of hair cuticle peeling inhibition)
1. A 20-fold diluted solution of each sample solution obtained in Examples and Comparative Examples was prepared, 300 mL of the solution was put in a 500 mL beaker, and the hair bundle was immersed in the solution for 1 minute.
2. Thereafter, 300 mL of ion-exchanged water is put into a 500 mL beaker, and 1. The hair bundle treated in step 1 was put in and rinsed while vibrating up and down for 30 seconds.
3. Thereafter, the hair bundle was taken out from the ion-exchanged water, and towel-dried to remove moisture from the hair bundle.
4). The above-mentioned operations 1 to 3 were performed as one hair washing operation, and a hair bundle subjected to the one operation was prepared as an evaluation hair sample. In addition, in performing the evaluation described later, in order to remove the entanglement of the hair, 1 g of the following conditioner for evaluation was applied to the hair bundle after towel drying, rinsed thoroughly with ion-exchanged water, then towel-dried hand towel It was dried with a dryer for 3 minutes while adding the operation. The formulation of the conditioner for evaluation is shown in Table 1 below.

(Evaluation of hair damage promotion (evaluation of stretched hair))
1. Five hairs were randomly picked up from the hair bundle of the evaluation hair sample subjected to the above-described treatment, and a 10 cm to 15 cm portion (hair length: 5 cm) was cut from the hair tip with a razor. A mending tape (manufactured by Scotch) was sandwiched from above and below at 0.5 cm sites on both ends of the cut out hair to form a bonded and fixed part.
The cut out hair grips this fixed portion and pulls in the axial direction of the hair at a pulling speed of 0.1 cm / second, and the stretching rate is 25% (until the hair on the non-tapeed portion is from 4 cm to 5 cm before stretching) It was stretched so that A sample for measurement was prepared by fixing the stretched hair on a slide glass with a two-part adhesive so as not to move the hair.
2. Using the above measurement sample, the hair surface shape is measured with a laser microscope (manufactured by KEYENCE, VK-8700) (measurement pitch: 0.1 μm), and the inclination other than the hair derived from the sample preparation (slide glass and mending) Surface tilt correction (3 points specified) on the software. Then, the average height Rc value (JIS B0601: 2001) of the roughness curve element which is a JIS specification was computed. As a calculation method, a straight line having a length of 200 μm was drawn in the axial direction on the hair surface whose inclination was corrected earlier, and the Rc value on the straight line was calculated on software. This operation was performed 5 times on a randomly selected hair surface, and the average value was obtained.
This suggests that the larger the Rc value (μm), the rougher the surface shape, that is, the cuticle peeling is promoted. The smaller this value, the more the cuticle peeling is suppressed. Yes.

(Sensory evaluation: shine after drying hair)
The glossiness of the hair bundle of the hair sample for evaluation treated by the above-described method (after beauty treatment, one-time washing and drying with a dryer) was evaluated by 10 professional panelists according to the following criteria, and the total score was calculated respectively. .
+2: Shiny compared to Comparative Example 1 +1: Slightly glossed compared to Comparative Example 1 0: Slightly comparable to Comparative Example 1, -1: Slightly shiny compared to Comparative Example 1 -2: No gloss compared to Comparative Example 1

(Sensory evaluation: Hair mass after drying hair)
The hair bundle of the hair sample for evaluation processed by the above-described method (beauty treatment, once washed and dried after drying) is evaluated according to the following criteria by 10 professional panelists, and the total score is calculated respectively. did.
+2: Compared with Comparative Example 1 +1: There is a little unity compared with Comparative Example 1 0: The unity is almost the same as compared with Comparative Example 1, -1: There is little unity compared with Comparative Example 1 -2: Compared with Comparative Example 1, there is no unity

  From Table 2, in the hair samples for evaluation obtained by washing with the shampoos obtained in Examples 1 to 8, compared with those of each comparative example, shampooing, suppression of cuticle peeling after stretching, hair gloss and Excellent balance of unity effect.

Claims (6)

A hair cleansing agent comprising the following components (A) to (D) and water.
(A) Ether sulfate type anionic surfactant 0.5 mass% to 12 mass% (B) Amino acid surfactant 0.5 mass% to 6 mass% (C) Succinic acid or salt thereof 0.1 % By mass or more and 5% by mass or less (D) Cationic polymer   The hair cleaning agent according to claim 1, wherein a mass ratio ((A) / (B)) of component (A) to component (B) in the hair cleaning agent is greater than 1 and 12 or less.   The hair cleaning agent according to claim 1 or 2, wherein a mass ratio ((A) / (B)) of component (A) to component (B) in the hair cleaning agent is 3.5 or more and 12 or less.   The mass ratio ((B) + (C)) / (D) of the component (B) and the component (C) to the component (D) in the hair cleansing agent is 1.0 or more, 15.0 The hair cleaning agent according to any one of claims 1 to 3, which is as follows.   The hair washing agent according to any one of claims 1 to 4, wherein the component (D) is at least one cationized polysaccharide selected from the group consisting of cationized cellulose and cationized guar gum.   A method for washing hair, comprising applying the hair cleanser according to any one of claims 1 to 5 to the hair and washing it off.