JP2004075591A - Hair treatment preparation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair treatment preparation having film formability and adsorbability. <P>SOLUTION: The hair treatment preparation contains as the main ingredient a polar amino acid-rich high-molecular weight peptide or protein such as almond protein. The almond protein, because of containing large amounts of polar amino acids, forms strong ionic bonds to the surface of the hair, being high in adsorbability to the hair, therefore intensifying hair firmness and affording the hair with moist touch feeling. Further, the almond protein, because of being a polymer, is good in film formability, and because the resulting film is noncrystallizable, affording the hair with pliability and smoothness and giving no irritancy to the scalp as well. Therefore, this hair treatment preparation enables the hair to be more naturally finished. <P>COPYRIGHT: (C)2004,JPO

Description

【００１８】
アミノ酸のうち酸性アミノ酸はアスパラギン酸、グルタミン酸であり、塩基性アミノ酸はヒドロキシリジン、リジン、ヒスチジン、アルギニンであり、中性アミノ酸はそれ以外のアミノ酸である。表１に示されるように、加水分解コラーゲン及び加水分解ケラチンは、含有される酸性アミノ酸及び塩基性アミノ酸、いわゆる極性アミノ酸の含有率は低いが、アルモンドたんぱく質は、その５０％近くが極性アミノ酸により構成されているため、極性基の含有率が高いことが分かる。したがって、アルモンドたんぱく質は、分子量が約１０、０００の高分子でありながら、低分子量の加水分解コラーゲンや加水分解ケラチンに匹敵する、良好な吸着性を得ることを可能とすると考えられる。
【００１９】
アルモンドはバラ科サクラ属の落葉高木であり、アルモンドエキスは、アルモンドの種子、果実、根、葉、花等のどの部位から抽出したものでも構わないが、特にアルモンドの種子（甘へん桃）より抽出すれば、最も高い効果を発揮し、アルモンドたんぱく質の含有量も豊富であるので好ましい。また、アルモンドエキス（アルモンドたんぱく質）の抽出方法としては、溶媒抽出、蒸留法、圧搾法等、種々の方法を採用可能である。
【００２０】
溶媒抽出により抽出する場合は、抽出溶媒としては、例えば水、メチルアルコール、エチルアルコール等のアルコール、グリセリン、プロピレングリコール、１、３−ブリチレングリコールなどを採用可能である。水による溶媒抽出法を用いた場合、アルモンドエキスは、アルモンドの粉末と水とを１．０：３．３の割合で混合してたんぱく質を抽出した後、グリセリンを１加えて混合して濾過し、これをさらにメンブランフィルターで濾過することにより調整される。この場合の製品収率は、約１である。なお、それぞれの数値は、アルモンドの粉末の重量を１としたときの相対値を表す。
【００２１】
アルモンドエキスの毛髪処理剤への配合は、３．０〜１４．０重量％、すなわちアルモンドエキスに含有されるアルモンドたんぱく質の毛髪処理剤に対する割合が、０．２〜１．０重量％の範囲、好ましくは、０．４〜１．０重量％とするのが好適である。
【００２２】
本発明の毛髪処理剤とは、整髪料、シャンプー、コンディショナー、ヘアリンス、ヘアトリートメント、ヘアクリーム、ヘアローション、ヘアトニック、ヘアオイル、ヘアスプレー、ブラッシング剤、ヘアフォーム、ヘアミスト、ポマード、チック、スタイリングジェル、パーマネントウェーブ第１剤、パーマネントウェーブ第２剤、ヘアブリーチ、染毛剤及び育毛・養毛剤等の毛髪に適用される製品すべてに適用可能であるが、本発明の毛髪処理剤は、ボリウムアップ感や形態保持能力を発揮できるので、整髪料やコンディショニング剤などの洗髪後の仕上げに用いる毛髪処理剤として使用するのが好適である。また、本発明の毛髪処理剤は液状に調整してもよいが、目的に応じてエマルジョン、ゲル、液状エアゾール等の形態をとってもよい。
【００２３】
また、本毛髪処理剤は、必要に応じて本発明の効果を阻害しない範囲内で、アルモンドたんぱく質以外の第三成分を添加しても構わない。その第三成分として特に限定されないが、例えば、水、アルコール類、中和剤、ｐＨ調整剤、香料、安定剤、界面活性剤、乳化剤、着色料、顔料、増粘剤、増量剤、保湿剤、殺菌剤、静菌剤、保存料、防腐剤、油脂類、グリセリン、ポリエチレングリコール、エステル類が挙げられる。
【００２４】
【発明の実施の形態】
以下、試験例及び実施例を挙げて説明するが、これらは本発明をなんら限定するものではない。
【００２５】
【試験例】
表２に、試験に使用した試料（アルモンドエキス、加水分解コラーゲン溶液１及び２、加水分解ケラチン溶液１〜３及び加水分解ケラチン４級アンモニウム塩溶液）に含有されるたんぱく質又はペプチドの分子量及びその含有率を示す。なお、アルモンドエキスは、アルモンド種子を用いて上記の水による溶媒抽出法により調整したものであり、加水分解コラーゲン溶液１及び２は、牛真皮を酸アルカリで加水分解したものであり、加水分解ケラチン溶液１〜３は、羊毛を酸アルカリで加水分解したものであり、加水分解ケラチン４級アンモニウム塩溶液は、加水分解ケラチンの末端アミノ基を４級アンモニウム塩としたものである。
【００２６】
【表２】

【００２７】
表３は、上段に各試料の配合率、中段にたんぱく質又はペプチドの含有量、下段にパネラーによる使用感の評価を示したものである。表３の上段に示される割合で、試料、エチルアルコール及びグリセリンを配合し、精製水で３ｍｌに定量して調整したサンプル溶液（Ａ１〜Ｋ５）を用いて、比較試験を行った。なお、Ａ１〜Ａ４はアルモンドエキスを含有するサンプル溶液、Ｃ１〜Ｃ３は加水分解コラーゲン溶液１又は２を含有するサンプル溶液、Ｋ１〜Ｋ４は加水分解ケラチン溶液１、２又は３を含有するサンプル溶液、Ｋ５は加水分解ケラチン４級アンモニウム塩を含有するサンプル溶液である。
【００２８】
【表３】

【００２９】
（試験方法）
２０名の女性パネラーを試用対象として、各サンプル溶液３ｍｌを洗髪した毛束２０ｇにまんべんなくスプレーし、コーミングしながらドライヤーで乾燥させ、「毛髪の腰の強さ」、「毛髪の柔軟性」、「毛髪のしっとり感」、「毛髪のなめらかさ」について、官能的に評価させた。
【００３０】
表３に、それぞれの項目について良いと答えた人数が１８人以上の場合は◎、良いと答えた人数が１４〜１７人の場合は○、良いと答えた人数が８〜１３人の場合は△、良いと答えた人数が７人以下の場合は×で示す。
【００３１】
（結果）
表３に示されるように、アルモンドエキス中のアルモンドたんぱく質含有量が０．２〜１．０重量％であると、毛髪の腰が強く、同時に柔軟性に優れ、しっとり感及びなめらかさも演出され、外観的に細毛や毛髪の少ない人には、自然な感じでの毛髪のボリュームアップを実感させることができた（Ａ２及びＡ３）。しかしながら、アルモンドたんぱく質の含有量が０．２重量％以下又は１．０重量％以上であると、充分な性能を発揮し得なかった（Ａ１及びＡ４）。
【００３２】
低分子の加水分解コラーゲン及び加水分解ケラチンは、吸着量が良いために腰の強さが出ているが、柔軟性及び髪のなめらかさに難がある。つまり、ごわつきを生じることが確認された（Ｃ１〜Ｃ３、Ｋ１及びＫ２）。低分子の加水分解ケラチン４級アンモニウム塩は、腰の強さは充分すぎるほど強いが、さらに髪の柔軟性が悪いものとなっている（Ｋ５）。
【００３３】
また、アルモンドたんぱく質と同程度の分子量である高分子の加水分解ケラチンは、吸着量が低いため、腰の強さが出にくい（Ｋ３）。ペプチド含有量を多くすると、腰の強さは出てくるが、柔軟性が悪くなり、ごわつきが出てきて、同時になめらかさも少なくなる傾向を示す（Ｋ４）。
【００３４】
以上の結果から、本発明のアルモンドたんぱく質は、少量の配合でも、毛髪への吸着性が高いために毛髪の表面全体に皮膜を形成することができ、毛髪の腰を充分に出すことができる。また、高分子であるので、皮膜は毛髪表面に均一に形成され、その皮膜の質は、結晶化せずに弾力性のあるものとできる。したがって、毛髪は、柔軟性、しっとり感及びなめらかさまで具備でき、細毛、薄毛の人たちの髪に自然な感じで毛髪のボリュームアップを実感させることが可能となった。
【００３５】
本発明の毛髪処理剤を毛髪に使用すると、毛髪処理剤が毛髪の全体に収着し、表面に弾力性がある自然な感触の皮膜を形成できる。この皮膜を利用して、ドライヤーブローによりセット（髪の毛の方向を整え整髪する）を行えば、この皮膜の腰の強さによって形態を保持することができる。
【００３６】
【実施例】
本発明に基づく毛髪処理剤の具体例としては、アルモンド種子の抽出物４重量％（すなわち、アルモンドたんぱく質０．３重量％）、エチルアルコール１０重量％、グリセリン３重量％、精製水残部の割合で配合した毛髪処理剤が効果の面から推奨できる。
【００３７】
但し、必ずしもこの配合量に限定されるものではなく、アルモンドたんぱく質は、０．２〜１．０重量％の範囲、望ましくは、０．４〜１．０重量％の範囲で用いることができ、エチルアルコールは５．０〜１５．０重量％、グリセリンは３．０〜７．０重量％の範囲で調節して配合することができる。なお、グリセリンの代わりに、１，３ブチレングリコール、ヘキシレングリコール、ジプロピレングリコールなどのグリコール類を用いてもよい。
【００３８】
【発明の効果】
以上の説明から明らかな通り、本発明に係る毛髪処理剤は、極性アミノ酸を多く含む高分子量のペプチド又はたんぱく質、例えばアルモンドたんぱく質を含有させているので、毛髪への吸着性を高め、毛髪の腰を強くすることができると共に造膜性に優れ、皮膜が結晶化せず、髪の柔軟性及びなめらかさが演出され、頭皮への刺激性もない。
【００３９】
したがって、本毛髪処理剤は、髪をより自然な仕上がりとすることができる。さらに、皮膜を利用することにより、充分な髪型の形態保持能力を具備させることができる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hair treatment agent such as a hairdressing agent, a hair treatment, and a conditioning agent.
[0002]
[Prior art]
For a person who feels that the fine hair or the amount of hair itself is small, a conditioning agent capable of imparting stiffness and volume-up feeling to hair is indispensable. There is also a high need for a hair styling material such as a setting agent that keeps the hair in an ideal state and keeps it for a certain period of time. Conventionally, such a hair treatment agent uses a synthetic resin as a main raw material, and further contains an oily component in order to prevent the hair from sticking or the like.
[0003]
However, these hair treatment agents have a moist wet finish and a crisp film feeling. Therefore, as a social need, a hair treatment agent that can impart a more natural finish feeling instead of such an artificial finish feeling is desired.
[0004]
[Problems to be solved by the invention]
Therefore, in order to improve the adhesion to hair and a hair treatment agent mainly composed of a peptide obtained by hydrolyzing keratin or collagen to a certain molecular weight (hereinafter referred to as hydrolyzed keratin and hydrolyzed collagen, respectively). There is a hair treatment agent containing a hydrolyzed keratin or a quaternary ammonium salt of hydrolyzed collagen. These are excellent in that they do not give a sticky feeling during use.
[0005]
However, it is known that the performance of peptides derived from keratin or collagen greatly changes depending on the molecular weight. That is, when the molecular weight increases, the polypeptide chain becomes longer, and the surface area of the hair covering one molecule with one molecule increases, so that a uniform film is easily formed and the film forming property is improved, but the adsorptivity and water retention are reduced. I do. Therefore, when the molecular weight is large, the formed film has elasticity and is preferable, but the film cannot be formed on the entire hair due to low adsorbability.
[0006]
On the other hand, when the molecular weight is reduced, the adsorptivity is improved, but the polypeptide chain is shortened and the surface area covered by one molecule is reduced, so that the film forming property is reduced, and the permeability is further increased, and the irritation to the scalp is increased. Will also occur. Therefore, when the molecular weight is small, the adsorptivity is high, but the formed film is crystallized due to low film-forming properties and loses elasticity, which is problematic in terms of film quality.
[0007]
As described above, the size of the molecular weight has a length and a length, and it is impossible to improve both the film forming property and the adsorptivity. At present, the molecular weight of hydrolyzed collagen or hydrolyzed keratin, which is the main product on the market, is set to a low molecular range of 500 to 2,000. Although this is set with an emphasis on the adsorptivity to hair, since it is a low molecular weight, it has low film-forming properties and cannot eliminate the drawback of crystallization of the film as described above. The tendency of the film to crystallize is stronger when the peptide is converted to a quaternary ammonium salt and cationized. When the hair is treated with such a material, the formed film is slightly hard, giving a crisp feeling and a firm feeling, and is highly irritating to the scalp.
[0008]
In view of the above, an object of the present invention is to provide a hair treatment agent having film forming properties and adsorptivity.
[0009]
[Means for Solving the Problems]
Peptides with a high molecular weight have high film-forming properties and are good in terms of membrane quality, but have the drawback of low adsorptivity, and if this adsorptivity can be increased, it will be a solution in all aspects. Conceivable. Then, in order to solve the above-mentioned problems, the present inventors have focused on amino acids constituting peptides or proteins.
[0010]
Amino acids have amino groups and carboxyl groups as polar groups in the molecule.If the number of amino groups and carboxyl groups is the same, neutral amino acids, if there are more carboxyl groups, acidic amino acids, amino groups are more In many cases, it is called a basic amino acid. Acidic amino acids and basic amino acids have more polar groups than neutral amino acids. Peptides or proteins are formed by bonding amino acids through peptide bonds. In general, those having a molecular weight of 10,000 or less are referred to as peptides, and those having a molecular weight of 10,000 or more are referred to as proteins, but are not particularly distinguished in the present invention.
[0011]
Here, the reason why the low molecular weight peptide has a high adsorptivity is that the ratio of the amino group and the carboxyl group at the molecular end to the size of one peptide molecule is higher than that of the high molecular weight peptide, so This is presumed to be due to the strong ionic bond with.
[0012]
Therefore, it is considered that the higher the polar group content of a high molecular peptide, the higher the adsorptivity to hair. That is, it is considered that the higher the content ratio of acidic amino acids and basic amino acids in all the amino acids constituting the peptide, the higher the adsorptivity.
[0013]
Therefore, as a result of research, it has been found that a peptide or protein containing at least 40% by weight or more of polar amino acids and having a weight average molecular weight of 5,000 or more has both film-forming properties and adsorptivity. . It is preferable that such a peptide or protein having a weight average molecular weight of 5000 or more is contained in the hair treatment agent in an amount of 0.2 to 1.0% by weight, preferably 0.4 to 1.0% by weight. It can exhibit film-forming properties and adsorptivity.
[0014]
The peptide or protein can be appropriately selected as described above as long as it has at least 40% by weight or more of polar amino acids and has a weight average molecular weight of 5,000 or more. Almond extract extracted from almond seeds (almond extract) Is preferably used as peptide or protein source. The peptide or protein contained in the almond extract (hereinafter referred to as almond protein) is a polymer having a weight average molecular weight of about 10,000, and contains an acidic amino acid and a basic amino acid as shown in Table 1. The rate is very high. Table 1 shows the amino acid composition and content of almond protein (extracted from almond seeds), hydrolyzed collagen and hydrolyzed keratin.
[0015]
The weight average molecular weight of the peptide or protein was measured by a high-performance protein liquid chromatograph (FPLC). The column used was Superose 12, the mobile layer used a 0.05M potassium phosphate buffer (pH 7.0), and the ultraviolet absorption detector was UV. Detector (detection wavelength: 280 nm) was used. Carbonic anhydrase (MW: 29000), bovine albumin (MW: 66000), alcohol dehydrogenase (MW: 150,000), and amylase (MW: 200000) were used as reference substances. The weight average molecular weights of other substances are also measured by this method and under the same conditions.
[0016]
The composition and content of the amino acid of the peptide or protein were determined by pre-treatment by removing the free amino acid of the peptide or protein by adsorption with a cationic ion exchange resin, and then hydrolyzing with 6M hydrochloric acid in a vacuum sealed tube at 110 ° C for 24 hours. The sample was used as an analysis sample, and the analysis sample was measured using a Beckman-type automatic amino acid quantification device (model 6300). As a detection method, a ninhydrin colorimetric method was adopted, and the absorbance at 570 nm and 440 nm was measured.
[0017]
[Table 1]

[0018]
Among the amino acids, acidic amino acids are aspartic acid and glutamic acid, basic amino acids are hydroxylysine, lysine, histidine and arginine, and neutral amino acids are other amino acids. As shown in Table 1, hydrolyzed collagen and hydrolyzed keratin have a low content of acidic amino acids and basic amino acids, so-called polar amino acids, but nearly 50% of almond proteins are composed of polar amino acids. Therefore, the content of the polar group is high. Therefore, almond protein is considered to be capable of obtaining good adsorptivity comparable to low molecular weight hydrolyzed collagen and hydrolyzed keratin, even though it is a polymer having a molecular weight of about 10,000.
[0019]
Almond is a deciduous tree of the genus Rosaceae, and almond extract may be extracted from any part of almond seeds, fruits, roots, leaves, flowers, etc., especially from almond seeds (sweet peach). Extraction is preferable because it exhibits the highest effect and has a rich content of almond protein. Various methods such as solvent extraction, distillation, and squeezing can be used as the method for extracting almond extract (almond protein).
[0020]
In the case of performing extraction by solvent extraction, for example, water, alcohols such as methyl alcohol and ethyl alcohol, glycerin, propylene glycol, 1,3-butylene glycol and the like can be used as the extraction solvent. When the solvent extraction method using water is used, the almond extract is prepared by mixing almond powder and water at a ratio of 1.0: 3.3 to extract protein, then adding 1 glycerin, mixing and filtering. It is adjusted by further filtering this with a membrane filter. The product yield in this case is about 1. In addition, each numerical value represents the relative value when the weight of the almond powder is set to 1.
[0021]
The amount of the almond extract in the hair treatment agent is 3.0 to 14.0% by weight, that is, the ratio of the almond protein contained in the almond extract to the hair treatment agent is in the range of 0.2 to 1.0% by weight. Preferably, the content is 0.4 to 1.0% by weight.
[0022]
With the hair treatment agent of the present invention, hair styling, shampoo, conditioner, hair rinse, hair treatment, hair cream, hair lotion, hair tonic, hair oil, hair spray, brushing agent, hair foam, hair mist, pomade, tic, styling gel, Although it can be applied to all products applied to hair, such as permanent wave first agent, permanent wave second agent, hair bleach, hair dye and hair growth and hair restoration agent, the hair treatment agent of the present invention has a volume up feeling and Since it can exert its shape-retaining ability, it is preferably used as a hair treatment agent used for finishing after washing the hair, such as a hair styling agent and a conditioning agent. The hair treatment agent of the present invention may be adjusted to a liquid state, but may be in the form of an emulsion, a gel, a liquid aerosol or the like according to the purpose.
[0023]
In addition, the present hair treatment agent may contain a third component other than the almond protein, if necessary, as long as the effect of the present invention is not impaired. Although not particularly limited as the third component, for example, water, alcohols, neutralizers, pH adjusters, fragrances, stabilizers, surfactants, emulsifiers, colorants, pigments, thickeners, bulking agents, humectants Bactericides, bacteriostats, preservatives, preservatives, oils and fats, glycerin, polyethylene glycol and esters.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described with reference to Test Examples and Examples, which do not limit the present invention at all.
[0025]
[Test example]
Table 2 shows the molecular weights of proteins or peptides contained in the samples (almond extract, hydrolyzed collagen solutions 1 and 2, hydrolyzed keratin solutions 1 to 3 and hydrolyzed keratin quaternary ammonium salt solution) used in the test, and their contents. Indicates the rate. The almond extract was prepared by using the above-mentioned solvent extraction method with water using almond seeds. The hydrolyzed collagen solutions 1 and 2 were obtained by hydrolyzing beef dermis with an acid alkali, and hydrolyzed keratin. Solutions 1 to 3 were obtained by hydrolyzing wool with an acid alkali, and the hydrolyzed keratin quaternary ammonium salt solution was obtained by converting the terminal amino group of hydrolyzed keratin into a quaternary ammonium salt.
[0026]
[Table 2]

[0027]
Table 3 shows the mixing ratio of each sample in the upper part, the content of protein or peptide in the middle part, and the evaluation of the feeling of use by panelists in the lower part. A comparative test was performed using sample solutions (A1 to K5) in which the sample, ethyl alcohol and glycerin were blended at the ratio shown in the upper part of Table 3 and quantified to 3 ml with purified water. A1 to A4 are sample solutions containing almond extract, C1 to C3 are sample solutions containing hydrolyzed collagen solution 1 or 2, K1 to K4 are sample solutions containing hydrolyzed keratin solution 1, 2 or 3, K5 is a sample solution containing a hydrolyzed keratin quaternary ammonium salt.
[0028]
[Table 3]

[0029]
(Test method)
Using 20 female panelists as test subjects, 3 ml of each sample solution is evenly sprayed on 20 g of washed hair bundles, dried with a dryer while combing, and “hair waist strength”, “hair flexibility”, “ "Moist feeling of hair" and "smoothness of hair" were sensually evaluated.
[0030]
In Table 3, when the number of persons who answered that each item was good was 18 or more, ◎, when the number of persons who answered good was 14-17, ○, when the number of persons who answered good was 8-13, △, when the number of people who answered good is 7 or less, is indicated by ×.
[0031]
(result)
As shown in Table 3, when the almond protein content in the almond extract is 0.2 to 1.0% by weight, the stiffness of the hair is strong, and at the same time, the flexibility is excellent, and the moist feeling and smoothness are produced. A person with little fine hair or hair in appearance could feel the natural volume increase of hair (A2 and A3). However, when the almond protein content was 0.2% by weight or less or 1.0% by weight or more, sufficient performance could not be exhibited (A1 and A4).
[0032]
Low molecular weight hydrolyzed collagen and hydrolyzed keratin have high stiffness due to good adsorption, but have difficulty in flexibility and hair smoothness. That is, it was confirmed that stiffness occurred (C1 to C3, K1 and K2). The low-molecular-weight hydrolyzed keratin quaternary ammonium salt has a sufficiently high waist strength, but also has poor hair flexibility (K5).
[0033]
In addition, high-molecular-weight hydrolyzed keratin having a molecular weight similar to that of almond protein has a low adsorbed amount, and thus it is difficult for the stiffness to appear (K3). When the peptide content is increased, the stiffness is increased, but the flexibility is deteriorated, the stiffness is increased, and at the same time, the smoothness tends to be reduced (K4).
[0034]
From the above results, the almond protein of the present invention can form a film on the entire surface of the hair because of its high adsorptivity to the hair even with a small amount of the compound, and the hair can be sufficiently stiff. In addition, since it is a polymer, the film is formed uniformly on the hair surface, and the quality of the film can be elastic without crystallization. Therefore, the hair can be provided with flexibility, moist feeling and smoothness, and it is possible to make the hair of people with fine hair and thin hair feel natural volume increase.
[0035]
When the hair treatment agent of the present invention is used for hair, the hair treatment agent can be sorbed to the entire hair, and a film having a resilient natural feel can be formed on the surface. If the film is used to set (orient and straighten the hair) by a dryer blow, the form can be maintained by the strength of the waist of the film.
[0036]
【Example】
Specific examples of the hair treatment agent according to the present invention include the following ratios: 4% by weight of an almond seed extract (that is, 0.3% by weight of an almond protein); 10% by weight of ethyl alcohol; 3% by weight of glycerin; The formulated hair treatment agent can be recommended in terms of effect.
[0037]
However, it is not necessarily limited to this blending amount, and the almond protein can be used in the range of 0.2 to 1.0% by weight, preferably 0.4 to 1.0% by weight, Ethyl alcohol can be mixed and adjusted in the range of 5.0 to 15.0% by weight and glycerin in the range of 3.0 to 7.0% by weight. In addition, you may use glycols, such as 1,3 butylene glycol, hexylene glycol, and dipropylene glycol, instead of glycerin.
[0038]
【The invention's effect】
As is clear from the above description, the hair treatment agent according to the present invention contains a high molecular weight peptide or protein containing a large amount of polar amino acids, for example, almond protein, so that the hair treatment agent enhances the adsorptivity to hair and reduces the waist of hair. And has excellent film-forming properties, the film does not crystallize, the hair has softness and smoothness, and there is no irritation to the scalp.
[0039]
Therefore, the present hair treatment agent can give the hair a more natural finish. Further, by using the film, it is possible to provide a sufficient hairstyle shape retention ability.

Claims (5)

A hair treatment agent comprising 0.2 to 1.0% by weight of a peptide or protein having a weight average molecular weight of 5,000 or more containing at least 40% by weight or more of polar amino acids. A hair treatment agent containing 0.4 to 1.0% by weight of a peptide or protein having a weight average molecular weight of 5,000 or more containing at least 40% by weight or more of polar amino acids. The hair treatment composition according to claim 1 or 2, wherein an almond extract extracted from almond seeds is used as the peptide or protein source. A hair treatment agent containing 3.0 to 14.0% by weight of an almond extract extracted from almond seeds. The hair treatment according to claim 4, comprising 3.0 to 14.0% by weight of almond extract, 5.0 to 10.0% by weight of ethyl alcohol, 3.0 to 7.0% by weight of glycol, and the balance of purified water. Agent.