JP2000302648A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hair cosmetic capable of imparting gloss, moisture and tenseness to hair, preventing split hair and improving smoothness, combining property, or the like, of hair when hair using the hair cosmetic is heat-treated by including a silylated peptide therein. SOLUTION: This hair cosmetic comprises a silylated peptide and is used by applying the cosmetic to hair and then heating the coated hair. Heating temperature in this time is preferably 50-200 deg.C. A silylated peptide of the formula [at least one of R1 to R3 is hydroxyl group and the remainders are each a 1-3C alkyl; R4 is a residue excluding a terminal amino group of a basic amino acid having amino group at the end of side chain; R5 is an amino acid side chain other than R4; A is a bond comprising methylene, propylene, or the like; (m) is 0-200 and (n) is 0-200 and (m+n) is 1-200] is preferable as the silylated peptide. The hair cosmetic can impart gloss, moisture and tenseness to hair and prevents split hair and smoothens hair surface and can improve water- retaining ability of hair.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cosmetic, and more particularly, to a method for imparting gloss, moisture, and a beam to hair.
The present invention relates to a hair cosmetic that prevents split ends, smoothes the surface of hair, improves slipperiness and combability, suppresses evaporation of moisture from hair, and improves hair moisture retention.

[0002]

2. Description of the Related Art Conventionally, protein hydrolysates (hydrolyzed peptides) have been used in hair cosmetics such as shampoos, hair rinses, hair conditioners, hair treatment agents, hair creams, permanent waving agents, hair dyes and hair styling products. It has been used in combination with silicone oil. This is due to the excellent extensibility of silicone oil, the effect of imparting gloss and gloss to hair, the protective effect by imparting water repellency to hair, the effect of sorption of the hydrolyzed peptide on hair, and the effect of film formation. This is for the purpose of exerting a protective effect or a moisturizing effect.

[0003] However, silicone oil is originally a lipophilic substance, and hydrolyzed peptides are essentially hydrophilic substances. Therefore, they are hardly compatible with each other, and silicone oil is added to water-soluble hair cosmetics. In this case, it was necessary to prevent the silicone oil from being separated by the emulsifier. In addition, during the treatment of the hair, the hydrolyzed peptide hardly adheres to the portion that has come into contact with the silicone oil first, and conversely, the silicone oil does not easily adhere to the portion that has come into contact with the hydrolyzed peptide first. There was a problem that the characteristics could not be fully exhibited.

[0004] Therefore, the present inventors have developed a silylated peptide in which a functional group containing only one silicon atom is covalently bonded to the amino group of a peptide containing an amino group in the amino acid side chain, and this is used in hair cosmetics. By blending, it has been attempted to solve the above problem (for example, see JP-A-8-813).
No. 38, JP-A-8-81339, JP-A-8-81339
133934, JP-A-8-157344 and the like).

However, since the silylated peptide used in the above publication has few silyl groups bonded to the peptide chain, the hydrolyzed peptide exerts the effect of protecting the hair and the effect of imparting moisturizing properties, but has the effect of imparting water repellency. There has been a problem that the silicone oil is inferior to the silicone oil in terms of imparting, extensibility and smoothness.

[0006] The hydrolyzed peptide has an effect of imparting moisturizing properties to hair, but if the amount of sorption to the hair is too large, it may give a stiff feeling to the hair. When the hair is dried for a long time with hot air using a hair dryer, or when the hair is exposed for a long time under extremely low humidity, the hydrolyzed peptide sorbed on the hair dries and further There is also a problem that water is also lost and the effect cannot be sufficiently exhibited.

[0007]

DISCLOSURE OF THE INVENTION The present invention solves the problems of the above-mentioned conventional hair cosmetics, imparts gloss, moisturization, and beam to hair, prevents split ends, and smoothes the hair surface. It is an object of the present invention to provide a hair cosmetic which can improve slip and combability, suppress evaporation of moisture from hair, and improve moisture retention of hair.

[0008]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems. As a result, the present inventors have found that when a silylated peptide is contained in a hair cosmetic and the hair is treated after being applied to the hair, A strong film is formed on the hair, giving the hair a luster, moisture and beam, preventing split ends, smoothing the hair surface, improving slip and combability, and evaporating moisture from the hair. The present inventors have found that it is possible to improve the water retention ability of hair while suppressing it, and have completed the present invention.

That is, the above-mentioned silylated peptide sorbs to the hair by the sorption action of the peptide portion, protects the hair and imparts moisture to the hair, and by heating the hair, the silyl group of the silylated peptide is heated. Hydroxyl groups directly connected to the silicon atom are bonded to each other, and the silylated peptide is polymerized,
A stronger and smoother film is formed on the hair, giving the hair a luster, smoothing the surface of the hair to improve slipping and combability and preventing split ends. In addition, the film formed on the hair and formed by polymerizing the silylated peptide suppresses evaporation of water from inside the hair and improves the water retention ability of the hair.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION As the hair cosmetic of the present invention, various cosmetics can be used irrespective of the form as long as the cosmetic contains a silylated peptide. Examples include shampoos, hair rinses, hair conditioners, hair treatments, hair creams, agents for permanent waves, hair dyes, hair dyes, hair styling agents, hair setting agents, and the like.

The silylated peptide contained in hair cosmetics includes, for example, the following general formula (I)

[0012]

Embedded image [In the formula, at least one of R ¹ , R ² , and R ³ represents a hydroxyl group, and the rest represents an alkyl group having 1 to 3 carbon atoms. R
⁴ represents a residue excluding the terminal amino group of a basic amino acid having an amino group at the terminal of the side chain, and R ⁵ represents an amino acid side chain other than R ⁴ . A is a bond, a methylene group, a propylene _{group, -CH 2 OCH 2 CH (OH} ) CH 2 - or -
A group represented by (CH ₂ ) ₃ OCH ₂ CH (OH) CH ₂ —, wherein m is 0 to 200, n is 0 to 200, and n + m
Is 1 to 200 (however, m and n only indicate the number of amino acids, not the order of amino acid sequences)]. JP-A-8-59424,
It can be manufactured by the method disclosed in JP-A-8-67608.

In the silylated peptide represented by the above general formula (I), when ^one of R ¹ , R ² and R ³ is an alkyl group having 1 to 3 carbon atoms, and the other two are hydroxyl groups. In particular, the effect of imparting gloss to hair, smoothing the surface of hair, and improving the combability of hair is particularly remarkably exhibited.

Examples of the peptide portion of the silylated peptide include a hydrolyzed peptide obtained by partially hydrolyzing an amino acid, a natural peptide, a synthetic peptide, or various proteins (proteins) with an acid, an alkali, an enzyme or a combination thereof. And the like.

Examples of the above amino acids include alanine, glycine, valine, leucine, isoleucine, proline, phenylalanine, tyrosine, serine, threonine, methionine, arginine, histidine, lysine, asparagine, aspartic acid, glutamine, glutamic acid, cystine, Cysteine, cysteic acid, tryptophan, hydroxyproline, hydroxylysine, O-phosphoserine, citrulline and the like can be mentioned.

The natural peptides include, for example, glutathione, bacitracin A, insulin, glucagon, oxytocin, vasopressin, and the like, and the synthetic peptides include, for example, polyglycine, polylysine, polyglutamic acid, and polyserine.

Examples of the hydrolyzed peptide include collagen (including gelatin which is a denatured product thereof), keratin, silk fibroin, sericin, casein, conchiolin, elastin, egg yolk proteins of eggs such as chicken and duck,
Proteins derived from animals and plants such as egg white protein, soy protein, wheat protein, corn protein, rice (rice bran) protein, potato protein, or yeast of the genus Saccharomyces, Candita, Endomycopsis, so-called beer yeast, sake yeast Microbial proteins, such as yeast proteins isolated from yeasts, proteins extracted from mushrooms (basidiomycetes), and proteins isolated from chlorella, are partially hydrolyzed with acids, alkalis, enzymes, or a combination thereof. And the like.

In the silylated peptide represented by the above general formula (I), R ⁴ is a residue excluding the terminal amino group of a basic amino acid having an amino group at the terminal of the side chain. Examples of basic amino acids having an amino group at the terminal of lysine, arginine, hydroxylysine, and the like. Further, R ⁵ represents a side chain of an amino acid other than R ^4, but as such acids, e.g., glutamic acid, aspartic acid, alanine, serine, threonine, valine, methionine, leucine, isoleucine, tyrosine, phenylalanine, proline , Hydroxyproline and the like.

In the silylated peptide represented by the above general formula (I), m is 0 to 200, preferably more than 0 and 50 or less (0 <m ≦ 50), more preferably 0
Larger than 10 (0 <m ≦ 10), and n is 0
To 200, preferably 1 to 100, more preferably 2 to 40, and m + n is 1 to 200, preferably 2 to 100, more preferably 3 to 50,
This is for the following reason.

That is, when m is larger than the above range, the number of silyl functional groups bonded to the amino group in the side chain increases, and the sorption effect of the peptide on the original hair decreases. , The properties of the silyl functional group portion cannot be sufficiently exhibited, and when m + n is larger than the above range, the sorption property and permeability to hair as a peptide are low. In addition to reducing the molecular weight of the peptide, the peptide tends to aggregate during storage and storage stability is reduced.

The above-mentioned m, n and m + n are theoretically integers. However, when the peptide portion is a hydrolyzed peptide as described above, the hydrolyzed peptide is obtained as a mixture of those having different molecular weights. Therefore, the measured value is an average value.

The hair cosmetic containing the silylated peptide of the present invention can be any cosmetic containing the silylated peptide, regardless of its form, type of silylated peptide and its content. However, when the content of the silylated peptide is extremely small, since the amount of the silylated peptide attached to the hair is small, the polymerization of the silylated peptide due to the heat treatment does not occur much, and therefore,
Since the effect of imparting gloss to the hair, protecting the hair, and improving the combability is not sufficiently exhibited, in order to exert the effect of the present invention, the number of times the hair cosmetic is applied to the hair Needs to be increased, and the hair treatment becomes complicated and time-consuming. On the other hand, when the content of the silylated peptide is extremely large, the polymerization of the silylated peptide due to the heat treatment may proceed excessively, and the hair may be stiff, resulting in poor hair styling properties. Therefore, the content of the silylated peptide in the hair cosmetic of the present invention is slightly different depending on the type of the hair cosmetic, but is preferably 0.05 to 30% by weight, particularly preferably 0.5 to 20% by weight. . The silylated peptide in the hair cosmetic containing the silylated peptide of the present invention may be used alone or in combination of two or more.

The hair cosmetic containing the silylated peptide of the present invention is applied to the hair (this application is to bring the hair cosmetic into contact with the hair by means of so-called application or spraying, and to apply the hair cosmetic to the hair). Shampoos, hair rinses, permanent waving agents, hair dyes, etc., and then applied to the hair and then washed away (however, the silylated peptide is the peptide The hair is absorbed by the hair due to the sorbing action of the part on the hair and stays on the hair), and in the case of non-flushable hair cosmetics such as hair treatment agents, hair creams, hair styling agents, and hair setting agents After the hair is applied to the hair, the effect can be expressed by heating the hair with a heating device such as a hair dryer, a hair heating trowel, or a hair heating heater. But it is, their hair for a heating appliance, household, models, such as for operations in such as a hair salon,
Regardless of the form.

The heat treatment temperature of the hair is preferably from 50 to 200 ° C, more preferably from 60 to 180 ° C. this is,
When the heat treatment temperature of the hair is lower than the above range, the silylated peptide does not sufficiently polymerize, and therefore, a strong film is not formed on the hair, and gloss, moisture, a beam is imparted to the hair, and split ends are formed. May not be able to sufficiently exert the effect of improving the combability of the hair by preventing the hair, and if the heat treatment temperature of the hair is higher than the above range, the hair may be damaged by heating. ing.

[0025]

The hair cosmetic composition of the present invention contains a silylated peptide typified by the silylated peptide represented by the general formula (I).
By heating at 0 ° C., the hydroxyl groups directly linked to the silicon atom of the silyl group of the silylated peptide are bonded to each other, and the silylated peptide is polymerized to form a strong and smooth film on the hair. Give gloss, moisture, beam,
It can prevent split ends, smoothen the hair surface, improve slip and combability, suppress evaporation of moisture from hair, and improve moisture retention ability of hair.

[0026]

Next, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to only these examples. Prior to the description of the embodiment,
Evaluation of hair beam performed in the examples, evaluation of smoothness of the hair surface, measurement of the water retention ability of the hair, hair efficiency and wave retention rate of the hair performed in the examples of the hair setting agent and the agent for permanent wave A method such as measurement will be described.

[Evaluation Method of Hair Beam] A knot (knot) is made lightly at a substantially central portion (a central portion of hair of 15 cm in the embodiment) of hair of a fixed length as shown in FIG. The hair is put on the top, and a hair weight of 10 g is attached to the hair tip side. Thereafter, the weight on the hair tip side was removed, and the hair knot was suspended in the above-mentioned humidity chamber for another 1 hour. The knot made on the hair was photographed with a scanning electron microscope, and the size of the knot of the hair was determined based on the photographed image. The length (major axis) is measured by an image processing apparatus [JSM-5800LV manufactured by JEOL Ltd. is used for the scanning electron microscope, and SemaFore (product name) manufactured by the company is used for image processing]. For each sample, measure the size of the knots of 14 hairs and measure 2 from the largest and 2 from the smallest.
The results were excluded for the four samples, the average value was determined for the results of 10 hairs for each sample, and the average value indicates the evaluation result. In addition, the larger the numerical value indicating the evaluation result (the larger the knot), the more the hair has "beam".

[Evaluation Method for Smoothness (Slipperiness) of Hair Surface] The smoothness of the hair surface was measured using a friction tester KES-SE manufactured by Kato Tech Co., Ltd. Sa (or rough)
Is expressed as the average deviation of the coefficient of friction felt by a friction element moving a certain distance on the surface of the hair.The unit is dimensionless, and the smaller the value, the `` smoother '', that is, `` slipperiness ''. Is shown. In the test, the test results are represented by the average deviation of the coefficient of friction when the friction element moves 2 cm on the hair surface of each sample, and the numerical value indicating the test result is the average value of the measured values of each sample 10 times. is there.

[Test Method for Moisture Retaining Ability of Hair] A hair bundle treated with each hair cosmetic was suspended in a constant humidity bath at a relative humidity of 80% for 2 hours, weighed precisely, and the hair after weighing was precisely weighed. Bundle the relative humidity 20
% And kept for 48 hours. The hair bundle after storage is precisely weighed again, and the weight reduction ratio is determined from the difference in weight before and after storage. A smaller decrease means that the hair has "moisture retention ability".

[Method of Measuring Wave Efficiency and Wave Retention] Twenty hairs are bundled, the roots thereof are aligned and fixed with tape, and the length is adjusted to 15 cm. A glass tube with a diameter of 10 mm and a length of 80 mm is used for the rod, and a mark is made in advance every 10 mm (the mark is also shifted by 5 mm on the opposite side). Then, the hair bundle is wound around the rod so as to pass over the mark, and both ends are fixed with rubber bands. Treating the hair tress in the manner described in the Examples below,
After drying, the rubber band on the hair tip side is removed, and the rod is suspended horizontally in a desiccator and dried for 12 hours. After drying, the hair bundle is detached from the rod, the wavelength and the wave number of the wave are measured, and then a 3 g weight is attached to the tip of the hair, and the hair bundle is set vertically and left in a desiccator for 12 hours. Next, the weight is removed from the hair bundle, the hair bundle is set vertically, and left in a desiccator for 24 hours, and the wavelength and the wave number of the wave are measured again.

The measurement of the wavelength and the wave number is as shown in FIG.
The top of the second wave from one end, excluding the waves at both ends
Distance from the point to the top of the second wave from the other end to the left
Measure with the right. The distance from the top of the left and right waves to the top
Each L₁, L_TwoAnd L ₁And L_TwoNumber of waves between
To n₁, N_TwoAnd the average wavelength (L) is given by the following equation:
Ask by.

[0032]

The wavelength (diameter) of the rod itself is 10 mm
Therefore, the wave efficiency is obtained by the following equation.

[0034]

From the ratio of the wave efficiency after the setting process and the wave efficiency after the weight is removed and the wave is recovered after standing for 24 hours, the wave holding ratio is obtained as shown in the following equation.

[0036]

Example 1 and Comparative Example 1 Two kinds of hair creams having the compositions shown in Table 1 were prepared, each of the hair creams was applied to the hair, and dried with hot air using a hair dryer to shine, moisten and comb the hair. The passability and surface smoothness were examined. The amounts of each component in the examples and comparative examples are based on parts by weight, and for those whose amount is not the solid content, the solid content concentration is shown in parentheses after the component name. Is the same in the following examples and comparative examples. Further,% indicating the concentration of the solution or dispersion liquid is% by weight, which is also the same in the following Examples and Comparative Examples.

In Example 1, as the silylated peptide,
In the general formula (I), R¹= CH _Three, R^Two= OH, R
^Three= OH and A is-(CH_Two)_ThreeOCH_TwoCH (OH)
CH _TwoA group represented by-, average value of m = 1.4, n
Average value of 18.6, average value of m + n = 20 silylation
It contains hydrolyzed collagen.
Average value of m = 1.4 instead of hydrolyzed collagen, n
Average value = 18.6, average value of m + n = 20
Contains Lagen.

[0039]

[Table 1]

The treatment of the hair with the hair creams of Example 1 and Comparative Example 1 was performed as follows. That is,
Two hair bundles having a length of 15 cm and a weight of 1 g were prepared, and the hair bundles were washed with a 2% aqueous solution of sodium polyoxyethylene (3) lauryl ether sulfate and rinsed in running tap water. With respect to this hair bundle, the above Example 1 and Comparative Example 1
Each hair bundle was dried by applying hot air from a distance of 10 cm with a 1000 W commercially available hair dryer using 0.5 g of each hair cream. The temperature at the position of the hair bundle in the hot air drying was 65 ° C. 30 seconds after the start of the drying, and 72 ° C. at the end of the drying of the hair bundle (two minutes after the start of the drying).

The gloss, moisture and combability of the dried hair were evaluated by 10 panelists (6 women, 4 men) in Example 1.
It was evaluated which of Comparative Example 1 and Comparative Example 1 was superior. The results are shown in Table 2 by the number of people who answered that they were excellent.

[0042]

[Table 2]

As shown in Table 2, all the panelists applied the hair cream of Example 1 containing silylated hydrolyzed collagen and heat-treated the hair of Comparative Example 1 containing hydrolyzed collagen. He said that the hair was more glossy, moisturized and more combable than hair that had been cream-applied and heat-treated.When heat-treated, silylated hydrolyzed collagen was better than hydrolyzed collagen. It was evident that the gloss, moisture and combability were improved.

Next, each of the above-mentioned hair tresses was subjected to an evaluation test for the smoothness of the hair surface to examine the slipperiness. The results are shown in Table 3 as average values.

[0045]

[Table 3]

As shown in Table 3, the smoothness of the surface of the hair was compared with that of the hair heat-treated after applying the hair cream of Example 1 containing the silylated hydrolyzed collagen, containing the hydrolyzed collagen. The hair cream of Example 1 is superior to the hair heat-treated after application by 10% or more, and when heat-treated, the silylated hydrolyzed collagen smoothes the hair surface more than the hydrolyzed collagen and improves the slipperiness. It was clear to improve.

Example 2 and Comparative Example 2 Two types of hair rinses having the compositions shown in Table 4 were prepared, each of the hair rinses was applied to the washed hair, and then dried with hot air using a hair dryer to obtain a gloss of the dried hair. The moisturizing, the hair beam and the water retention capacity of the hair were examined.

In Example 2, as the silylated peptide,
In the general formula (I), R¹= CH _Three, R^Two= OH, R
^Three= OH and A is-(CH_Two)_ThreeOCH_TwoCH (OH)
CH _TwoA group represented by-, the average value of m = 1, and the average value of n
Average value = 7, average value of m + n = 8 silylated hydrolyzed wheat
Contains protein, and in Comparative Example 2, silylated hydrolyzed wheat
Average value of m = 1, average value of n = 7, m instead of protein
+ N average = 8 hydrolyzed wheat proteins
You.

[0049]

[Table 4]

The treatment of the hair with the above hair rinse was performed as follows. That is, two hair bundles having a length of 15 cm and a weight of 1 g were prepared, and the hair bundles were washed with a commercially available shampoo containing no hydrolyzed peptide or a derivative thereof, and rinsed with hot water. The washed hair bundle was subjected to a hair rinse treatment using 2 g of each of the hair rinses of Example 2 and Comparative Example 2, rinsed with hot water, and heated and dried with the same hair dryer as in Example 1 under the same conditions. After repeating the shampoo washing, hair rinsing, and drying steps five times,
10 panelists (6 female, 4 male)
People) evaluated which was better. Table 5 shows the results.

[0051]

[Table 5]

As shown in Table 5, all the panelists applied the hair rinse of Example 2 containing the silylated hydrolyzed wheat protein and heat-treated the hair of Comparative Example 2 containing the hydrolyzed wheat protein. He said that hair was more glossy, moisturized, and more combable than hair that had been heat-treated with hair rinse applied.When heat-treated, silylated hydrolyzed wheat protein was better than hydrolyzed wheat protein. Than,
It was found to improve the gloss, moisture and combability of the hair.

Next, 14 hairs were extracted from each hair bundle and subjected to a hair beam evaluation test to compare the size of knots. Furthermore, the remaining hair bundles were subjected to an evaluation test for water retention ability, and the rate of decrease in water after storage in a constant-humidity bath was examined. The results are shown in Table 6, where the knot size is an average value.

[0054]

[Table 6]

As shown in Table 6, the size of the knot, which indicates the evaluation result of the hair beam, was determined by applying the hair rinse of Example 2 containing the silylated hydrolyzed wheat protein and heat-treating the hair. Comparative Example 2 containing degraded wheat protein
It is about 1.5 times that of hair that has been heat-treated by applying a hair rinse, and when heat-treated, silylated hydrolyzed wheat protein is more effective in imparting hair to hair than hydrolyzed wheat protein. It was clear that.

The rate of decrease in the weight of the hair bundle, which indicates the result of evaluating the water retention ability of the hair, was determined by the fact that the hair bundle treated with the hair rinse of Example 2 containing the silylated hydrolyzed wheat protein was subjected to heat treatment. About 77% of the hair bundles coated with the hair rinse of Comparative Example 2 containing the decomposed wheat protein and heat-treated, and a film formed by heat-treating the silylated hydrolyzed wheat protein has a coating from inside the hair. It was evident that water vaporization was suppressed and that water retention was effective.

Example 3 and Comparative Example 3 Two kinds of hair setting agents having the compositions shown in Table 7 were prepared, and each of the hair setting agents was applied to washed hair, and then the hair was subjected to a heat treatment, and the hair after the treatment was treated. Hair gloss, moisture, beam, wave efficiency and wave retention were examined.

In Example 3, as the silylated peptide,
In the general formula (I), R¹= CH _Three, R^Two= OH, R
^Three= OH and A is-(CH_Two)_ThreeOCH_TwoCH (OH)
CH _TwoThe average of m = 2, the average of n
Average value = 8, average value of m + n = 10
In Comparative Example 3, the silylation-hydrolyzed kera
Average value of m = 2, average value of n = 8, m + n instead of chin
Average = 10 hydrolyzed keratins.

[0059]

[Table 7]

The treatment of the hair with the above hair setting agent was performed as follows. That is, the hair whose length was adjusted to 18 cm was washed in advance with a 2% aqueous solution of polyoxyethylene (10EO) nonylphenyl ether, rinsed with water and air-dried at room temperature to prepare two hair bundles each consisting of 20 hairs. , Each of which was wrapped around a rod. 2 ml of each of the hair setting agents of Example 3 and Comparative Example 3 was applied to the hair bundle wound around the rod, and each hair bundle was dried in a hot air dryer at 90 ° C. The hair bundle after drying was removed from the rod, and the wave efficiency and the wave retention were determined by the method described in the section on the measurement method of the wave efficiency and the wave retention. Next, ten panelists (six females and four males) were asked to evaluate which was superior in gloss and moisture of hair. Furthermore, 14 hairs were extracted from each hair bundle and subjected to a hair beam evaluation test to compare the size of knots. Table 8 shows the evaluation results of the gloss and moisture of the hair, and Table 9 shows the wave efficiency and the wave retention.
Shown in In addition, the evaluation result of the hair beam is shown in Table 9 as an average value in knot size.

[0061]

[Table 8]

As shown in Table 8, all the panelists applied the hair setting agent of Example 3 containing the silylated hydrolyzed keratin and heat-treated the hair of Comparative Example 3 containing the hydrolyzed keratin. They answered that the luster and moisture of the hair were better than the hair that had been applied with a hair setting agent and heat-treated.When heat-treated, the silyated hydrolyzed keratin was more glossy than the hydrolyzed keratin. And improved moisturizing.

[0063]

[Table 9]

As shown in Table 9, the hair treated with the hair setting agent of Example 3 containing the silylated hydrolyzed keratin was the hair treated with the hair setting agent of Comparative Example 3 containing the hydrolyzed keratin. Wave efficiency is 40
% Or more, and the wave retention rate is excellent by 50% or more. When a hair setting agent containing silylated hydrolyzed keratin is applied and heated, the hair is strongly set,
And it was clear that the setting force had persistence.

The size of the knot indicating the evaluation result of the hair beam was as follows. The hair of Example 3 which had been subjected to a heat treatment after applying a hair setting agent containing a silylated hydrolyzed keratin,
There is about 1.5 times that of the hair heat treated by applying the hair setting agent of Comparative Example 3 containing hydrolyzed keratin, and when heat-treated, the silylated hydrolyzed keratin is better than the hydrolyzed keratin. It was clear that the effect of imparting the beam was excellent.

Example 4 and Comparative Example 4 Two kinds of first agents for permanent wave shown in Table 10 were prepared, and each of the first agents for permanent wave was prepared.
The hair bundle was subjected to a permanent wave treatment using a second agent for a permanent wave composed of a 6% aqueous sodium bromate solution, and the gloss, moisture, wave efficiency, wave retention and hair moisture retention of the treated hair were examined. .

In Example 4, as the silylated peptide,
In the general formula (I), R¹= CH _Three, R^Two= OH, R
^Three= OH, A is-(CH_Two)_ThreeOCH_TwoCH (OH) C
H_TwoThe average of m = 0.5, n
Average value = 9.5, average value of m + n = 10 silylation water
Comparative Example 4 contains a degraded silk,
8. Average value of m = 0.5 instead of silk, average value of n = 9.
5, containing m + n average value = 10 hydrolyzed silk
I have.

[0068]

[Table 10]

The treatment of the hair with the first agent for permanent wave was carried out as follows. That is, length 18
cm of hair which has been previously washed with a 2% aqueous solution of polyoxyethylene (10EO) nonylphenyl ether,
After rinsing with water and air-drying at room temperature, two hair bundles each consisting of 40 hairs were prepared, and each of them was wound around a rod. The first agent for permanent wave of Example 4 and Comparative Example 4 was respectively applied to the hair bundle wound around the rod for 2 times.
ml, coat the hair bundle with wrap, leave it for 15 minutes, wash it gently with running water for about 10 seconds, then apply 2 ml of the second agent for permanent wave, cover with wrap and leave for 15 minutes After that, the plate was gently washed in running water for 30 seconds. The washed hair bundle is dried in a hot air drier at 90 ° C., the dried hair bundle is removed from the rod, and the wave efficiency and the wave retention are measured by the method described in the section on the measurement method of the wave efficiency and the wave retention. I asked. Next,
10 panelists (6 female, 4 male)
People) evaluated which was better. Furthermore, each hair bundle was subjected to an evaluation test for water retention ability, and the rate of decrease in water content after storage in a humidity chamber was examined. The results of the evaluation of the gloss and moisture of the hair are shown in Table 11, and the results of the wave efficiency, the wave retention and the reduction rate of the hair bundle weight for evaluating the moisture retention of the hair are shown in Table 12 as average values. , The value of the wave retention is an average value.

[0070]

[Table 11]

As shown in Table 11, all the panelists applied the first agent for permanent waving of Example 4 containing the silylated hydrolyzed silk and heat-treated the hair. The hair treated with the first agent for permanent waving of Example 4 was said to have better gloss and moisture than the hair which had been heat-treated. When heat-treated, the silylated hydrolyzed silk was more hydrated. It was clear that the decomposed silk improved the gloss and moisture of the hair.

[0072]

[Table 12]

Further, as shown in Table 12, the hair bundle treated with the first agent for permanent wave of Example 4 containing the silylated hydrolyzed silk was used for the permanent wave of Comparative Example 4 containing the hydrolyzed silk. Since the wave efficiency is about 20% higher and the wave retention is higher than the hair bundle treated with the first agent, the first agent for permanent wave containing silylated hydrolyzed silk is applied and heat-treated. Then, it was clear that a strong wave was applied to the hair and the durability of the wave was excellent.

Further, the reduction rate of the hair bundle, which indicates the result of evaluating the water retention ability of the hair, is shown by the results that the hair bundle treated with the first agent for permanent waving of Example 4 containing the silylated hydrolyzed silk was hydrolyzed. About 72% of the hair bundle treated with the first agent for permanent waving of Comparative Example 4 containing silk, and the film formed by heat-treating the silylated hydrolyzed silk, the evaporation of moisture from inside the hair It was clear that the compound had an effect of suppressing moisture and retaining moisture.

Example 5 and Comparative Example 5 Two kinds of shampoos having the compositions shown in Table 13 were prepared, and after washing the hair with each shampoo, the gloss, moisture, combability, and the like of the hair after hot-air drying were determined. The smoothness of the beam and hair surface was examined.

In Example 5, as the silylated peptide,
In the general formula (I), R ¹ = OH, R ² = OH, R ³
= OH, A is a propylene group, average value of m = 1, average value of n = 8, average value of m + n = 9, and in Comparative Example 5, silylated hydrolyzed casein is contained. Instead, it contains hydrolyzed casein having an average value of m = 1, an average value of n = 8, and an average value of m + n = 9.

[0077]

[Table 13]

The treatment of the hair with the shampoo was carried out as follows. That is, two hair bundles having a length of 15 cm and a weight of 1 g are prepared, and the hair bundles are washed with the shampoos of Example 5 and Comparative Example 5 by 0.5 g each, and washed with hot water. It was rinsed and dried by heating under the same conditions with the same hair dryer as in Example 1. After repeating the shampoo washing and drying steps ten times, ten panelists (six females and four males) were asked to evaluate which was better in terms of gloss, moisture and combability of the hair. Table 14 shows the results.

[0079]

[Table 14]

As shown in Table 14, all the panelists applied the shampoo of Example 5 containing the silylated hydrolyzed casein and heated and dried the hair to obtain the shampoo of Comparative Example 5 containing the hydrolyzed casein. He said that the hair was more glossy, moisturized, and more combable than the hair that was coated and dried by heating.When heat-treated, the silylated hydrolyzed casein was more glossy than the hydrolyzed casein. , Moisturizing and combability.

Next, each hair bundle was subjected to an evaluation test for the smoothness of the hair surface to examine the slipperiness. Furthermore, 14 hairs were extracted from each hair bundle and subjected to a hair beam evaluation test to compare the size of knots. The results are shown in Table 15, and the evaluation values are all average values.

[0082]

[Table 15]

As shown in Table 15, the smoothness of the hair surface was determined by comparing the hair washed with the shampoo of Example 5 containing silylated hydrolyzed casein and heat-dried with the hair of Comparative Example 5 containing hydrolyzed casein. About 4.5% better than shampoo washed and heat dried hair, the silylated hydrolyzed casein forms a film on the hair by heating,
It was clear that it improved the smoothness of the hair.

The size of the knot showing the evaluation result of the hair beam is as follows: the hair heated and dried after washing with the shampoo of Example 5 containing silylated hydrolyzed casein contains the hydrolyzed casein. About 1.5 times that of hair dried by heating after washing with a shampoo, and it is clear that when heat-treated, silylated hydrolyzed casein is more effective in imparting hair to hair than hydrolyzed casein. Met.

Example 6 and Comparative Example 6 The first agent of two kinds of oxidized hair dyes having the compositions shown in Table 16 was prepared, the hair was subjected to a heat treatment after the hair dyeing, and the luster and moisture of the hair after the heat treatment were prepared. , Combability, and smoothness of the hair surface.

In Example 6, as the silylated peptide,
In the general formula (I), R¹= CH _Three, R^Two= OH, R
^Three= OH, A is-(CH_Two)_ThreeOCH_TwoCH (OH) C
H_TwoA group represented by-, average value of m = 1, average of n
Value = 7, m + n = 8 with silylated hydrolyzed soy protein
Comparative Example 6 contains silylated hydrolyzed soy protein.
Average value of m = 1, average value of n = 7, m + n = 8
Contains hydrolyzed soy protein.

[0087]

[Table 11]

In contrast to the first agent, the second agent is common to both Example 6 and Comparative Example 6, and has the following composition. However, the amounts are by weight.

Second agent Stearic acid 1.0 Glycerin monostearate 1.5 Polyoxyethylene oleyl ether 1.0 Hydrogen peroxide (35%) 15.0 Purified water Total 100

The treatment of the hair with the oxidative hair dye was carried out as follows. That is, a hair bundle having a length of 15 cm and a weight of 1 g was washed with a 2% aqueous solution of sodium polyoxyethylene (3) lauryl ether sulfate, rinsed in running tap water, air-dried, and two hair bundles were used. After uniformly applying 2 g of each hair dye obtained by mixing the same amount of the first agent and the second agent of Example 6 and Comparative Example 6 to the hair tresses,
It was left to stand for a minute, rinsed with hot water, then washed with a 2% aqueous solution of sodium polyoxyethylene (3) lauryl ether sulfate, and further rinsed in running tap water. Then, each hair bundle was subjected to a hair iron [Wako F, manufactured by Yakko Kogyo Co., Ltd.
set iron 150 (trade name).
Heated at ° C. The heating was repeated 5 times at intervals of 20 seconds for 5 seconds so as not to cause damage to the hair due to the heating. After drying the hair, the gloss, moisture and combability of the hair of Example 6 and Comparative Example 6 were evaluated by 10 panelists (women 7
And three men) were evaluated as to which was better. Table 17 shows the results.

[0091]

[Table 17]

As shown in Table 17, all the panelists applied the oxidized hair dye of Example 6 containing the silylated hydrolyzed soy protein and heat-treated the hair containing the hydrolyzed soy protein. He said that the oxidized hair dye of Comparative Example 6 was applied and heat-treated, and that the hair had better luster, moisture and combability. It was evident that the protein improved hair gloss, moisture and combability over hydrolyzed soy protein.

Next, the hair bundle after the sensory evaluation was subjected to an evaluation test for the smoothness of the hair surface to measure the slipperiness. The results are shown in Table 18 as average values.

[0094]

[Table 18]

As is clear from the results shown in Table 18, regarding the smoothness of the hair surface, the hair heat-treated after the hair dyeing with the oxidized hair dye of Example 6 containing the silylated hydrolyzed soybean protein was as follows: The oxidized hair dye of Comparative Example 6 containing the hydrolyzed soy protein has improved slipperiness by about 6% as compared to the hair heat-treated after dyeing the hair. It was evident that a film was formed on the top, smoothing the hair surface.

Example 7 and Comparative Example 7 Two kinds of acidic hair dyes having the compositions shown in Table 19 were prepared, and after dyeing the hair, the hair was dried by heating, and the gloss, moisture, combability and beam of the hair were measured. evaluated.

In Example 7, as the silylated peptide,
In the general formula (I), R¹= CH _Three, R^Two= OH, R
^Three= OH, A is-(CH_Two)_ThreeOCH_TwoCH (OH) C
H_TwoA group represented by-, average value of m = 2, average of n
Value = 8, average value of m + n = 10, silylation-hydrolyzed mushroom
In Comparative Example 7, silylated hydrolyzed keratin
Average value of m = 2, average value of n = 8, m + n
Contains an average = 10 hydrolyzed keratin.

[0098]

[Table 19]

The treatment of the hair with the above-mentioned acidic hair dye was carried out as follows. That is, two hair bundles having a length of 15 cm and a weight of 1 g are prepared, and the hair bundles are washed with a 2% aqueous solution of sodium polyoxyethylene (3) lauryl ether sulfate and rinsed in running tap water. In order to make the degree of decolorization and damage uniform, the hair bundle was immersed in a 5% aqueous ammonia solution containing 5% aqueous hydrogen peroxide for 5 minutes for bleaching treatment, washed with water, air-dried, and subjected to hair dyeing treatment. . The hair dyeing process
2 g of each of the acidic hair dyes of Example 7 and Comparative Example 7 was applied to each hair bundle, allowed to stand for 15 minutes, washed with a commercially available shampoo containing no hydrolyzed peptide or a derivative thereof, and further heated to a temperature of 40 ° C. or lower. After rinsing each hair bundle,
It dried with the hair dryer under the same conditions as above. After drying the hair,
Ten panelists (seven females and three males) were asked to evaluate which was superior in gloss, moisture and combability of the hair of Example 7 and Comparative Example 7. Table 20 shows the results.

[0100]

[Table 20]

As shown in Table 20, all the panelists applied the acid hair dye of Example 7 containing silylated hydrolyzed keratin and heat-treated the hair of Comparative Example 7 containing hydrolyzed keratin. He said that the hair was more glossy, moisturized, and more combable than the hair that had been coated with an acidic hair dye and heat-treated. It was evident that the gloss, moisturization and combability of the hair were more improved.

Next, 14 hairs were extracted from each hair bundle and subjected to an evaluation test for hair beam. Table 21 shows the results.
Are shown as average values.

[0103]

[Table 21]

As is clear from the results shown in Table 21, the size of the knot indicating the evaluation result of the hair beam was determined by heating and drying after dyeing with the acidic hair dye of Example 7 containing silylated hydrolyzed keratin. The hair is about 1.2 times as large as the hair of Comparative Example 7 which was heated and dried after dyeing with the acidic hair dye of Comparative Example 7 containing hydrolyzed keratin. Was found to be superior to hydrolyzed keratin in imparting hair to the hair.

[0105]

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing knots (knots) of hair when evaluating a beam of hair.

FIG. 2 is a diagram schematically showing the state of the hair wave when measuring the wave efficiency and the wave retention.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Sakiko Uchida 1-2-14 Fukuichicho, Higashiosaka-shi, Osaka F-term (reference) 4C083 AB052 AB352 AC022 AC062 AC072 AC082 AC102 AC122 AC182 AC252 AC302 AC352 AC422 AC472 AC482 AC522 AC542 AC642 AC692 AC792 AC852 AD072 AD162 AD282 AD411 AD412 AD432 AD442 AD452 CC32 CC34 CC36 CC38 CC39 DD27 EE06 EE25 EE26 EE28 EE29

Claims (4)

[Claims] 1. A hair cosmetic comprising a silylated peptide, which is heated after being applied to hair. 2. The hair cosmetic according to claim 1, wherein the heating temperature is 50 ° C. to 200 ° C. 3. A silylated peptide represented by the following general formula (I): [In the formula, at least one of R ¹ , R ² , and R ³ represents a hydroxyl group, and the rest represents an alkyl group having 1 to 3 carbon atoms. R
⁴ represents a residue excluding the terminal amino group of a basic amino acid having an amino group at the terminal of the side chain, and R ⁵ represents an amino acid side chain other than R ⁴ . A is a bond, a methylene group, a propylene _{group, -CH 2 OCH 2 CH (OH} ) CH 2 - or -
A group represented by (CH ₂ ) ₃ OCH ₂ CH (OH) CH ₂ —, wherein m is 0 to 200, n is 0 to 200, and n + m
Is from 1 to 200 (where m and n indicate only the number of amino acids and do not indicate the order of the amino acid sequence)]. Fees. 4. In the silylated peptide represented by the general formula (I), ^one of R ¹ , R ² and R ³ has 1 to 1 carbon atoms.
4. The alkyl group of claim 3, wherein the remaining two are hydroxyl groups.
The hair cosmetic according to the above.