JP5026205B2 - Hair composition - Google Patents

Description

  The present invention relates to a composition for hair that enhances the penetration of hair protecting ingredients and has a high effect of preventing hair damage.

  Currently, many women use hair colors and perms. Furthermore, in addition to these chemical treatments, damage to hair has progressed due to excessive brushing, severe damage to the hair tips such as many split ends and cut hairs, and loss of shine. Treatments that contain silicone or cationic surfactants (hair rinses, hair conditioners, etc.) are used for damaged hair, but they are symptomatic and not fully effective. is the current situation. It is important not only to repair damaged hair, but also to strengthen it to make it hard to damage. There is a demand for hair treatment agents that can maintain hair that is less susceptible to chemical and physical effects, such as hair color, perm, and brushing, and that is less susceptible to damage.

On the other hand, a homopolymer of 2-methacryloyloxyethyl phosphorylcholine (hereinafter abbreviated as MPC) represented by the formula [1] or a copolymer of MPC and a hydrophilic monomer or a hydrophobic monomer is applied to the skin. It is known that it exhibits a moisturizing effect and a rough skin improving effect and can be used as a cosmetic (Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 5-70321 JP-A-6-157269

  However, if this is simply used, the hair protecting component hardly penetrates into the hair, and there is room for improvement in terms of protecting the hair (effect of making it difficult to damage).

  That is, an object of the present invention is to provide a hair composition that is highly effective in increasing the penetration of hair protecting ingredients and preventing hair damage.

As a result of intensive studies in view of the above matters, the present inventor used (a) a copolymer obtained by polymerizing MPC and a hydrophobic methacrylic acid ester, and (b) ceramide and (c) 12 to 12 carbon atoms. by combining branch fatty acids 24 to increase the penetration of the hair care components, with the knowledge that the effect of preventing damage to the hair resulting, and have completed the present invention.

That is, the present invention provides the following hair composition.
A composition for hair comprising (a), (b) and (c). Here, (a) is a copolymer obtained by polymerizing 2-methacryloyloxyethyl phosphorylcholine (shown by the formula [1]) and a hydrophobic methacrylic ester, (b) is ceramide, and (c) is carbon number. it is a 12 to 24 of the branches fatty acids.

  Hereinafter, the configuration of the present invention will be described in detail.

  The weight average molecular weight of the copolymer (a) obtained by polymerizing MPC and hydrophobic methacrylic acid ester used in the present invention is preferably in the range of 5,000 to 5,000,000, and 10,000 to More preferably, it is in the range of 1,000,000. When the weight average molecular weight of the copolymer is less than 5,000, it is not preferable because sufficient emulsifying ability cannot be exhibited. When the weight average molecular weight of the copolymer is larger than 5,000,000, the dispersibility of the copolymer is not preferable. Is not preferable because it significantly decreases. Further, the constituent molar ratio of MPC and hydrophobic methacrylic acid ester in the copolymer is preferably in the range of 1: 1 to 1: 9. Moreover, it is preferable that it is the range of 12-24 about carbon number of the alkyl chain which the hydrophobic methacrylic acid ester in a copolymer has. Specific examples of hydrophobic methacrylates include, but are not limited to, lauryl methacrylate, tridecyl methacrylate, myristyl methacrylate, palmityl methacrylate, stearyl methacrylate, behenyl methacrylate, isostearyl methacrylate, and oleyl methacrylate. is not.

  If the copolymer of (a) MPC and hydrophobic methacrylic acid ester used in the present invention is more specifically exemplified, it can be synthesized with reference to JP-A-12-119130, or a commercially available product is used. You can also

  The content of the copolymer of (a) MPC and hydrophobic methacrylic acid ester used in the present invention is preferably included in the range of 0.0001 to 10% by weight as a solid content, and 0.001 to 5% by weight. It is more preferable that it is included in the range. If it is less than 0.0001%, a sufficient effect may not be obtained. If it is more than 10%, a significant effect corresponding to the amount cannot be obtained, and it is sticky when applied to hair. Is unfavorable because it is damaged.

  As the (b) ceramide used in the present invention, a known ceramide can be used, and any of natural ceramide, synthetic ceramide, and synthetic pseudo-ceramide can be used. From the viewpoint of availability, ceramide 2, 5, 6 or a mixture thereof is preferable, and ceramide 2 or 5 is more preferable. One or two or more of these can be used.

  (B) The content of ceramide is preferably 0.0001 to 10% by weight, more preferably 0.001 to 5% by weight, and still more preferably 0.01 to 2% by weight with respect to the total amount of the hair composition. If it is less than 0.0001%, it is not preferable because sufficient penetration effect is difficult to obtain, and if it is more than 10%, it is not preferable because the feeling of use is impaired when applied to hair.

The branch fatty used in the present invention (c) carbon atoms 12 to 24, isostearic acid, 18-methyleicosanoic acid, 14-methyl pentadecane acid, 14-Methylhexadecanoic acid, 16 methylheptadecanoic acid, Examples include 16-methyloctadecanoic acid and 2-hexyldecanoic acid. Preferred is 18-methyleicosanoic acid.

(C) the content of the branch fatty acid carbon number of 12 to 24 is preferably 0.0001% by weight with respect to the hair total composition, more preferably 0.001 to 10 wt%, more preferably 0 0.01 to 5% by weight. If it is less than 0.0001%, it is not preferable because sufficient penetration effect is difficult to obtain, and if it is more than 20%, it is not preferable because the feeling of use such as stickiness when applied to the skin is impaired.

The content of (a) MPC of the present invention, (b) it is preferred that the ceramide and (c) the number of carbon atoms contains the same amount or more based on the total weight of 12 to 24 branches fatty acids, more preferably 5-fold That's it. Further, it is (c) the content of the branch fatty acid carbon number 12 to 24 preferably contains more than 5 times against (b) a ceramide, more preferably 10 times or more. Except for this content, the permeability of the hair protecting component may decrease.

  The hair composition of the present invention can promote penetration of a hair protecting component, and examples of the component include amino acids, peptides, protein hydrolysates, and proteins, but are not particularly limited. These can be used alone or in combination of two or more. Examples of amino acids include glycine, ornithine, methionine, alanine, arginine, glutamine, cysteine, cysteic acid, cystine, leucine, isoleucine, aspartic acid, lysine, phenylalanine and the like. Examples of the peptide include those in which several to several hundreds of the above amino acids are bonded. Examples of the protein include wool keratin, collagen, gelatin, silk protein, soybean protein, natto protein, wheat protein, pearl protein, black pearl protein, and the protein hydrolyzate includes the above proteins such as acid, alkali Alternatively, it can be obtained by hydrolysis using a proteolytic enzyme or the like. Furthermore, the above may be derivatized.

  The content of the hair protecting component is preferably 0.0001 to 10% by weight, more preferably 0.001 to 5% by weight, and still more preferably 0.01 to 2% by weight with respect to the total amount of the hair composition. If it is less than 0.0001%, it is not preferable because sufficient penetration effect is difficult to obtain, and if it is more than 10%, it is not preferable because the feeling of use such as stickiness when applied to the skin is impaired.

  In addition to the above essential components, the hair composition of the present invention includes various components used in normal cosmetics, quasi drugs, pharmaceuticals, and the like, such as other surfactants, oily components, humectants, thickeners, Chelating agents, medicinal ingredients, preservatives, dyes, pigments, powders, pH adjusters, ultraviolet absorbers, antioxidants, fragrances and the like can be appropriately blended.

  The composition for hair of this invention can be used for uses, such as cosmetics, a quasi-drug, and a pharmaceutical. It can be used for hair rinse, hair conditioner, hair treatment, hair pack, hair spray, hair essence and the like.

  The present invention is a composition for hair that is highly effective in increasing the penetration of hair protecting ingredients and preventing hair damage.

  The present invention will be described in more detail with reference to examples and comparative examples below, but the present invention is not limited to the following examples. In addition, content of each component in prescription shall be weight%.

Hair penetration test A hair penetration test was performed using hydrolyzed pearl protein.
Add sodium carbonate-sodium bicarbonate buffer solution (pH 9) of hydrolyzed pearl protein freeze-dried product (freeze-dried pearl protein extract LA-J manufactured by Maruzen Pharmaceutical Co., Ltd.) to acetone solution of dansyl chloride (manufactured by SIGMA) And reacted at 50 ° C. for 30 minutes. After removing acetone, unreacted dansyl chloride was removed with octadecylated silica gel (ODS), and then lyophilized to obtain a fluorescent derivative.
The treatment agent which added hydrolyzed pearl protein fluorescent substance so that it might become 1% was prepared (Table 1). Human hair was dipped in this for 1 hour, rinsed lightly with water, then towel-dried and dried with a dryer. After cutting this with a thickness of 5 μm, the hair cross section was observed with a fluorescence microscope. As a comparative experiment, the same test was performed with an aqueous solution containing the same amount of the hydrolyzed pearl protein phosphor.

  The results are shown in FIG. The cuticle (the outer periphery of the hair) is a tissue that protects the hair from chemical and physical irritation. However, according to the composition of the present invention, not only the cortex (inside the hair) but also the cuticle is firmly penetrated. Thus, the hair protecting component penetrated remarkably throughout the hair. On the other hand, simply using an aqueous solution of a hair protecting component has a weak penetrating ability into hair. Similarly, in the comparative product in which B and C were changed to purified water, the penetrating power was weak.

Effect of preventing hair damage Human hair was washed with a commercially available shampoo, immersed in the treatment agent shown in Table 2 for 1 hour, rinsed lightly with water, towel-dried and dried with a dryer. The hair was brushed 300 times and scored by evaluating the smoothness of the hair (as combed) and the hair tip disorder. Judgment was made by five people, and the average score was obtained. The evaluation criteria are as follows.

Evaluation criteria "Smoothness of hair""Disturbance of hair tips"
4 points: good little 3 points: slightly good slightly less 2 points: somewhat bad slightly more 1 point: bad more
Judgment criteria A : 3-4 points on average, ○: 2-3 points on average, Δ: 1-2 points on average, X: 0-1 points on average,

  The experimental results are shown in Table 3. As a result, when A to C were used in combination, the smoothness of the hair was particularly good, the hair tips were less disturbed, and damage to the hair due to combing was remarkably suppressed. On the other hand, in the case of the comparative prescription in which components A, B and C were not used in combination, hair damage could not be suppressed.

Similar results were obtained when hydrolyzed pearl protein was replaced with hydrolyzed wheat protein. Moreover, when the test was conducted by changing the hydrolyzed pearl protein to purified water, the reduction of the conditioning effect was remarkable.

Next, the formulation example of the composition for hair of this invention is shown. The structures of lipid NR (5% as MPC polymer) and lipid S (100% as MPC polymer), which are MPC polymers used in this formulation example, are MPC (30%) / stearyl methacrylate (70%). The hair protecting component used in the present invention is a freeze-dried solution obtained from hydrolyzed wheat protein (manufactured by Croda Japan), hydrolyzed collagen (manufactured by Yaizu Suisan Chemical Co., Ltd.), hydrolyzed wool keratin protein (manufactured by Ichimaru Falcos) Was used.

Formulation Example 1 Shampoo Ingredient Ingredient Amount (% by weight)
(1) MPC polymer solution (Nippon Yushi Lipidure NR) 10
(2) Sodium laureth sulfate solution 35
(3) Olefin (C14-16) sodium sulfonate 15
(4) Lauryl betaine solution 7
(5) Cocamide diethanolamide 5
(6) Glycol distearate 2.5
(7) Ceramide 5 0.005
(8) Isostearic acid 0.2
(9) Purified water residue (10) EDTA-2 sodium 0.1
(11) Sodium benzoate 0.1
(12) 1,3-butylene glycol 5
(13) Polyquaternium-10 0.3
(14) Citric acid 0.3
(15) Hydrolyzed wheat protein 0.1
[Production method] (2) to (8) are heated to 80 ° C. To this, (1) and (9) to (15) heated to 80 ° C. are added with stirring, emulsified, and cooled to 35 ° C. with stirring.

Formulation Example 2 Conditioner Ingredients Ingredient Amount (% by weight)
(1) MPC polymer solution (Nippon Yushi Lipidure NR) 10
(2) Stearyl trimonium chloride solution 3
(3) Distearyl dimonium chloride solution 1
(4) Cetanol 3
(5) Stearyl alcohol 1
(6) Dimethicone 2
(7) Ceramide 2 0.01
(8) 18-methyleicosanoic acid 0.5
(9) Purified water residue (10) Propylene glycol 5
(11) Guar hydroxypropyltrimonium chloride 0.3
(12) Hydrolyzed wool keratin protein 0.3
[Production method] (2) to (8) are heated to 80 ° C. To this, (1) and (9) to (12) heated to 80 ° C. are added with stirring, emulsified, and cooled to 35 ° C. with stirring.

Formulation Example 3 Hair wax Compounding ingredients Compounding amount (% by weight)
(1) MPC polymer (Lipidure S manufactured by NOF Corporation) 1
(2) PEG-60 hydrogenated castor oil 3
(3) Glyceryl stearate 4
(4) Candelilla wax 2
(5) Microcrystalline wax 3
(6) Stearic acid 2
(7) Dimethicone 2
(8) Ceramide 5 0.005
(9) Isostearic acid 0.2
(10) Purified water residue (11) 1,3-butylene glycol 3
(12) Methylparaben 0.2
(13) Triethanolamine 0.3
(14) Hydrolyzed collagen 0.2
[Production Method] (1) to (9) are heated to 80 ° C. To this, (10) to (14) heated to 80 ° C. are added with stirring, emulsified, and cooled to 35 ° C. with stirring.

Formulation Example 4 Styling foam Compounding ingredients Compounding amount (% by weight)
(1) MPC polymer (Nippon Yushi Lipidia S) 0.2
(2) Polyvinylpyrrolidone / vinyl acetate copolymer 4.5
(3) Vinylpyrrolidone / N, N-dimethylaminoethyl
Methacrylic acid copolymer diethyl sulfate 0.5
(4) Methylphenylpolysiloxane 2
(5) Ethanol 12
(6) Methylparaben 0.1
(7) Ceramide 2 0.001
(8) 2-Hexyldecanoic acid 0.2
(9) Purified water residue (10) Hydrolyzed pearl protein 0.05
(11) LPG 5
[Production method] (1) to (8) are mixed, and the mixture of (9) and (10) is added with stirring, filled into an aerosol can, fitted with a valve and sealed (11). inject.

  The hair composition of the present invention shown in Formulation Examples 1 to 4 was highly effective in preventing hair damage in the test of Example 2.

  The hair composition of the present invention has a high effect of enhancing the penetration of hair protecting ingredients and preventing hair damage, and can be used for cosmetics, quasi drugs, pharmaceuticals, and the like.

Fluorescence micrograph of hair cross section (photo showing the permeability of hydrolyzed pearl protein) Left photo: Cross section of hair treated with the composition of the present invention Right photo: Cross section of hair treated without using the composition of the present invention

Claims (2)

(A): containing a copolymer obtained by polymerizing 2-methacryloyloxyethyl phosphorylcholine (shown by the formula [1]) and a hydrophobic methacrylate, and
(B): containing ceramide, and
(C): carbon atoms containing 12 to 24 branch fatty acids, and,
(D) contains a protein hydrolyzate,
And,
The content of (a) is equal to or greater than the total weight of (b) and (c), and
The hair composition, wherein the content of (c) is at least 5 times the content of (b).

(A): containing 0.5 to 1.5% by weight of a copolymer obtained by polymerizing 2-methacryloyloxyethyl phosphorylcholine (shown by the formula [1]) and a hydrophobic methacrylate, And,
(B): containing ceramide in an amount of 0.01 to 0.1% by weight;
(C): carbon atoms and 0.1 to 1.0 wt% 12 to 24 of the branch fatty acids, and,
(D) contains a protein hydrolyzate,
And,
The content of (a) is equal to or greater than the total weight of (b) and (c), and
The hair composition, wherein the content of (c) is at least 5 times the content of (b).