JP3828301B2 - Scalp cleanser - Google Patents
Scalp cleanser Download PDFInfo
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- JP3828301B2 JP3828301B2 JP37065598A JP37065598A JP3828301B2 JP 3828301 B2 JP3828301 B2 JP 3828301B2 JP 37065598 A JP37065598 A JP 37065598A JP 37065598 A JP37065598 A JP 37065598A JP 3828301 B2 JP3828301 B2 JP 3828301B2
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- Prior art keywords
- scalp
- weight
- surfactants
- cleaning agent
- dandruff
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Description
【0001】
【発明の属する技術分野】
本発明は、頭皮の皮脂に対する洗浄力が高く、しかも抗フケ効果に優れた頭皮洗浄剤に関する。
【0002】
【従来の技術】
通常のシャンプーは、手のひらにとって毛髪に塗布し、のばして使用するため、手にとるのに適度な粘度を有している。このため、シャンプーの大部分は毛髪に付着してしまい、頭皮の皮脂汚れを十分に洗い落とすことは困難であった。また、抗フケ剤を配合したシャンプーでも、抗フケ剤が頭皮に到達し難いため、十分な抗フケ効果が得られなかった。
【0003】
また、頭皮に塗布し、水を用いないで拭き取るタイプの頭皮洗浄剤が知られているが、毛髪の存在により拭き取るタオルが頭皮に届きにくく、頭皮の皮脂汚れを落とすには不十分である。更に、皮脂乳化成分を頭皮に塗布した後、洗浄剤を使用する方法があるが、手間がかかる。
【0004】
【発明が解決しようとする課題】
本発明の目的は、頭皮の皮脂汚れを簡便に除去できる頭皮洗浄剤を提供することにある。
【0005】
【課題を解決するための手段】
本発明者らは、界面活性剤、エタノール及びピロクトンオーラミンを特定の割合で含有する特定粘度の頭皮洗浄剤が、頭皮に直接塗布しやすく、頭皮の皮脂に対する洗浄力が高く、しかもエタノールとピロクトンオーラミンの相乗効果により、抗フケ効果に優れることを見出した。
【0006】
本発明は、(A)アニオン界面活性剤、両性界面活性剤及びノニオン界面活性剤から選ばれる1種以上の界面活性剤 10〜60重量%、
(B)エタノール 8〜30重量%、及び
(C)ピロクトンオーラミン 0.01〜5重量%
を含有し、25℃の粘度が100mPa・s以下である頭皮洗浄剤を提供するものである。
また、本発明は、当該頭皮洗浄剤を、頭皮に直接塗布して洗浄する頭皮洗浄方法を提供するものである。
【0007】
【発明の実施の形態】
本発明で用いる成分(A)の界面活性剤のうち、アニオン界面活性剤としては、例えばアルキル硫酸エステル塩、ポリオキシエチレンアルキル硫酸エステル塩、アルキルベンゼンスルホン酸塩、脂肪酸塩、アミノ酸系界面活性剤、α−オレフィンスルホン酸塩、α−スルホ脂肪酸エステル塩、アルキルリン酸エステル塩、スルホコハク酸エステル塩等が挙げられ、これらのうち、アルキル硫酸エステル塩、ポリオキシエチレンアルキル硫酸エステル塩、脂肪酸塩等が好ましい。
両性界面活性剤としては、例えばアミドアミン型両性界面活性剤、イミダゾリン系両性界面活性剤、ベタイン系両性界面活性剤、アルキルベタイン、アミノベタイン、スルホベタイン、アミンオキサイド等が挙げられ、こらのうち、ベタイン系両性界面活性剤、アミンオキサイドが好ましい。
ノニオン界面活性剤としては、例えばポリオキシエチレンアルキルエーテル、脂肪酸グリセリンエステル、高級脂肪酸モノエタノールアミド又はジエタノールアミド又はそれらのエトキシレート、ポリオキシエチレン硬化ヒマシ油、アルキルサッカライド系界面活性剤等が挙げられ、これらのうち、ポリオキシエチレンアルキルエーテル、アルキルサッカライド系界面活性剤、高級脂肪酸モノエタノールアミド又はジエタノールアミドが好ましい。
【0008】
これらのうち、好ましいものとしては、ポリオキシエチレンアルキルエーテル硫酸塩、脂肪酸アミドプロピルベタイン、アルキルポリグルコシドが挙げられる。
【0009】
成分(A)の界面活性剤は、1種以上を用いることができ、全組成中に10〜60重量%、好ましくは20〜40重量%、特に好ましくは25〜35重量%配合される。10重量%未満では、十分な洗浄力が得られず、60重量%を超えると、刺激を感じる場合があり、好ましくない。
【0010】
成分(B)のエタノールは、全組成中に8〜30重量%、好ましくは10〜20重量%、特に好ましくは12〜15重量%配合される。8重量%未満では十分な皮脂洗浄力が得られず、30重量%を超えると、泡立ちや使用感が悪くなる。
【0019】
成分(C)のピロクトンオーラミンとは、1−ヒドロキシ−4−メチル−6−(2,4,4−トリメチルペンチル)−2(1H)−ピリドントリエタノールアミン塩をいい、全組成中に0.01〜5重量%、好ましくは0.1〜1.5重量%、特に好ましくは0.5〜1重量%配合される。0.01重量%未満では十分な抗フケ効果が得られず、5重量%を超えると刺激を感じる場合があり、好ましくない。
【0020】
本発明の頭皮洗浄剤には、更に通常のシャンプーに用いられる成分、例えば前記以外の薬効剤、防腐剤、保湿剤、着色剤、コンディショニング剤、パール化剤、香料等を、本発明の効果を損なわない範囲で適宜配合できる。
【0021】
本発明の頭皮洗浄剤は、通常の方法に従って製造でき、25℃の粘度が100mPa・s以下、好ましくは50mPa・s以下、特に好ましくは30mPa・s以下のものである。この粘度が100mPa・sを超えるものでは、頭皮へ直接塗布し難く、頭皮を十分に洗浄できない。
【0022】
本発明の頭皮洗浄剤は、頭皮に直接塗布して洗浄するのが好ましく、特に容器から頭皮に直接塗布して洗浄するのが好ましい。更に、頭皮に直接塗布できる容器に充填して使用するのが簡便であり好ましい。このような容器としては、特に制限されないが、例えば図1に示すものなどが挙げられる。図1の容器は、使用時に先端部を頭皮にあて、適量を塗布するのに好適である。
【0023】
【発明の効果】
本発明の頭皮洗浄剤は、頭皮に直接塗布しやすく、頭皮の皮脂に対する洗浄力が高く、しかも抗フケ効果に優れたものである。
【0024】
【実施例】
実施例1
表1及び表2に示す組成の頭皮洗浄剤を常法により製造し、頭皮の皮脂除去効果及び抗フケ効果を評価した。結果を表1及び表2に併せて示す。なお、実施例において、粘度の測定は25℃においてB型粘度計を用いて行った。
【0025】
(評価方法)
(1)皮脂除去効果:
以下の方法によりアセトン−エーテル(1:1)液で抽出し、高速液体クロマトグラフィー(HPLC)で定量したスクワレン量から次式により頭皮の皮脂除去率を求め、比較品1の皮脂除去率を1.0としたときの相対値で示した。
操作a:直径16mmのガラスカップを頭皮にあて、アセトン−エーテル(1:1)液を約2ml入れ、2回ピペットで採取して取り出し乾固させた後、一定量のn−ブタノールに溶解し、スクワレン量をHPLCで定量する。
操作b:頭皮洗浄剤を、頭皮にあてた直径16mmのガラスカップに約2ml入れ、2回ピペットで採取して取り出す。その後、同じ部位で操作aを行う。
【0026】
【数1】
【0027】
(2)抗フケ効果:
試験対象者として20〜40歳代の男性各群5名を選んだ。コントロール期として抗フケ剤が入っていないシャンプー剤で2週間洗髪した後、フケの状態を肉眼で観察した。続いて、各頭皮洗浄剤を頭皮に直接塗布して1ケ月使用してもらい、1ケ月後のフケの状態を肉眼により観察し、コントロール期終了時の頭皮の状態との比較により抗フケ効果を下記基準により評価した。結果を平均点で示した。
(評価基準)
3;抗フケ効果が非常に高い。
2;抗フケ効果がある。
1;やや抗フケ効果がある。
0;抗フケ効果がない。
【0028】
【表1】
【0029】
【表2】
【0030】
実施例2
以下に示す組成の頭皮洗浄剤を常法により製造し(粘度25mPa・s)、図1の容器に充填した。
【表3】
(成分) (重量%)
ポリオキシエチレン(2.0)ラウリルエーテル硫酸ナトリウム 15
ラウリン酸モノエタノールアミド 3
ラウリン酸アミドプロピルベタイン 2
エタノール 12
l−メントール 0.2
ピロクトンオーラミン 0.5
クエン酸 0.1
精製水 バランス
【0032】
実施例2で得られた頭皮洗浄剤を、容器から頭皮に直接塗布して使用したところ、いずれも頭皮の皮脂洗浄力が高く、頭皮に直接塗布できて塗布感があり、抗フケ効果にも優れていた。
【図面の簡単な説明】
【図1】頭皮に直接塗布できる容器の一例を示す図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scalp cleaning agent having a high detergency against sebum of the scalp and having an excellent anti-dandruff effect.
[0002]
[Prior art]
Ordinary shampoos are applied to hair for the palm of the hand and used for extension, and therefore have an appropriate viscosity for taking in the hand. For this reason, most of the shampoo adheres to the hair, and it has been difficult to sufficiently wash off the sebum dirt on the scalp. In addition, even a shampoo containing an anti-dandruff agent cannot obtain a sufficient anti-dandruff effect because the anti-dandruff agent hardly reaches the scalp.
[0003]
Further, a scalp cleaning agent that is applied to the scalp and wiped off without using water is known, but a towel wiped off due to the presence of hair is difficult to reach the scalp and is insufficient to remove sebum stains on the scalp. Furthermore, there is a method of using a cleaning agent after applying a sebum emulsifying component to the scalp, but it takes time.
[0004]
[Problems to be solved by the invention]
The objective of this invention is providing the scalp washing | cleaning agent which can remove the sebum dirt of a scalp simply.
[0005]
[Means for Solving the Problems]
The present inventors have found that a scalp cleaning agent having a specific viscosity containing a surfactant, ethanol, and piroctone auramine in a specific ratio is easy to apply directly to the scalp, has a high detergency against sebum on the scalp, and ethanol . The synergistic effect of pirocton auramine was found to be excellent in anti-dandruff effect.
[0006]
The present invention comprises (A) 10 to 60% by weight of one or more surfactants selected from anionic surfactants, amphoteric surfactants and nonionic surfactants,
(B) 8-30% by weight of ethanol and (C) 0.01-5% by weight of piroctone auramine
And a scalp cleanser having a viscosity at 25 ° C. of 100 mPa · s or less.
The present invention also provides a scalp cleaning method in which the scalp cleaning agent is applied directly to the scalp and cleaned.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Among the surfactants of the component (A) used in the present invention, examples of the anionic surfactant include alkyl sulfate ester salts, polyoxyethylene alkyl sulfate ester salts, alkylbenzene sulfonate salts, fatty acid salts, amino acid surfactants, Examples include α-olefin sulfonates, α-sulfo fatty acid ester salts, alkyl phosphate ester salts, sulfosuccinate ester salts, and the like. Among these, alkyl sulfate ester salts, polyoxyethylene alkyl sulfate ester salts, fatty acid salts, and the like. preferable.
Examples of amphoteric surfactants include amidoamine-type amphoteric surfactants, imidazoline-based amphoteric surfactants, betaine-based amphoteric surfactants, alkylbetaines, aminobetaines, sulfobetaines, and amine oxides. Among these, betaines Preferred are amphoteric surfactants and amine oxides.
Nonionic surfactants include, for example, polyoxyethylene alkyl ethers, fatty acid glycerin esters, higher fatty acid monoethanolamides or diethanolamides or their ethoxylates, polyoxyethylene hydrogenated castor oil, alkyl saccharide surfactants, and the like. Of these, polyoxyethylene alkyl ethers, alkyl saccharide surfactants, higher fatty acid monoethanolamides or diethanolamides are preferred.
[0008]
Of these, preferred are polyoxyethylene alkyl ether sulfate, fatty acid amidopropyl betaine, and alkyl polyglucoside.
[0009]
One or more surfactants as the component (A) can be used, and 10 to 60% by weight, preferably 20 to 40% by weight, particularly preferably 25 to 35% by weight, are blended in the total composition. If it is less than 10% by weight, sufficient detergency cannot be obtained, and if it exceeds 60% by weight, irritation may be felt, which is not preferable.
[0010]
Component (B) ethanol is blended in the total composition in an amount of 8 to 30% by weight, preferably 10 to 20% by weight, particularly preferably 12 to 15% by weight. If it is less than 8% by weight, sufficient sebum detergency cannot be obtained, and if it exceeds 30% by weight, foaming and feeling of use are deteriorated.
[0019]
The component (C) piroctone auramine refers to 1-hydroxy-4-methyl-6- (2,4,4-trimethylpentyl) -2 (1H) -pyridone triethanolamine salt. 0.01 to 5% by weight, preferably 0.1 to 1.5% by weight, particularly preferably 0.5 to 1% by weight. If it is less than 0.01% by weight, a sufficient anti-dandruff effect cannot be obtained, and if it exceeds 5% by weight, irritation may be felt, which is not preferable.
[0020]
The scalp cleaning agent of the present invention further contains components used in ordinary shampoos, such as other medicinal agents, preservatives, moisturizers, coloring agents, conditioning agents, pearlizing agents, perfumes, etc. It can mix | blend suitably in the range which does not impair.
[0021]
The scalp cleaning agent of the present invention can be produced according to an ordinary method, and has a viscosity at 25 ° C. of 100 mPa · s or less, preferably 50 mPa · s or less, particularly preferably 30 mPa · s or less. When the viscosity exceeds 100 mPa · s, it is difficult to apply directly to the scalp, and the scalp cannot be washed sufficiently.
[0022]
The scalp cleaning agent of the present invention is preferably applied directly to the scalp for cleaning, and particularly preferably applied directly from the container to the scalp for cleaning. Furthermore, it is convenient and preferable to fill and use a container that can be directly applied to the scalp. Such a container is not particularly limited, and examples thereof include those shown in FIG. The container of FIG. 1 is suitable for applying an appropriate amount by applying the tip to the scalp during use.
[0023]
【The invention's effect】
The scalp cleaning agent of the present invention is easy to apply directly to the scalp, has a high detergency against the sebum of the scalp, and has an excellent anti-dandruff effect.
[0024]
【Example】
Example 1
Scalp cleaning agents having the compositions shown in Tables 1 and 2 were produced by a conventional method, and the scalp sebum removal effect and anti-dandruff effect were evaluated. The results are shown in Table 1 and Table 2 together. In the examples, the viscosity was measured using a B-type viscometer at 25 ° C.
[0025]
(Evaluation methods)
(1) Sebum removal effect:
Extracted with acetone-ether (1: 1) solution by the following method, and determined the sebum removal rate of the scalp by the following formula from the amount of squalene determined by high performance liquid chromatography (HPLC). It was shown as a relative value when.
Operation a: Applying a glass cup with a diameter of 16 mm to the scalp, putting about 2 ml of acetone-ether (1: 1) solution, collecting with a pipette twice, taking out and drying, and then dissolving in a certain amount of n-butanol. The amount of squalene is quantified by HPLC.
Operation b: About 2 ml of scalp washing agent is put into a glass cup with a diameter of 16 mm applied to the scalp and collected by pipetting twice. Thereafter, operation a is performed at the same site.
[0026]
[Expression 1]
[0027]
(2) Anti-dandruff effect:
Five men in their 20s to 40s were selected as test subjects. As a control period, after washing for 2 weeks with a shampoo containing no anti-dandruff agent, the state of dandruff was observed with the naked eye. Subsequently, each scalp cleaning agent was applied directly to the scalp and used for 1 month. The condition of dandruff after 1 month was observed with the naked eye, and the anti-dandruff effect was compared with the state of the scalp at the end of the control period. Evaluation was made according to the following criteria. The results are shown as average points.
(Evaluation criteria)
3; Anti-dandruff effect is very high.
2; Has anti-dandruff effect.
1; There is a slight anti-dandruff effect.
0: No anti-dandruff effect.
[0028]
[Table 1]
[0029]
[Table 2]
[0030]
Example 2
A scalp cleaning agent having the composition shown below was produced by a conventional method (viscosity: 25 mPa · s) and filled in the container of FIG.
[Table 3]
(Ingredient) (wt%)
Polyoxyethylene (2.0) sodium lauryl ether sulfate 15
Lauric acid monoethanolamide 3
Lauric acid amidopropyl betaine 2
Ethanol 12
l-Menthol 0.2
Pirocton Auramine 0.5
Citric acid 0.1
Purified water balance [0032]
When the scalp cleansing agent obtained in Example 2 was applied directly to the scalp from a container, all of them had a high sebum cleaning power on the scalp, and could be applied directly to the scalp with a feeling of application and also an anti-dandruff effect. It was excellent.
[Brief description of the drawings]
FIG. 1 shows an example of a container that can be applied directly to the scalp.
Claims (3)
(B)エタノール 8〜30重量%、及び
(C)ピロクトンオーラミン 0.01〜5重量%
を含有し、25℃の粘度が100mPa・s以下である頭皮洗浄剤。(A) 10 to 60% by weight of one or more surfactants selected from anionic surfactants, amphoteric surfactants and nonionic surfactants,
(B) 8-30% by weight of ethanol and (C) 0.01-5% by weight of piroctone auramine
A scalp cleanser having a viscosity at 25 ° C. of 100 mPa · s or less.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP37065598A JP3828301B2 (en) | 1998-07-21 | 1998-12-25 | Scalp cleanser |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP20531698 | 1998-07-21 | ||
JP10-205316 | 1998-07-21 | ||
JP37065598A JP3828301B2 (en) | 1998-07-21 | 1998-12-25 | Scalp cleanser |
Publications (2)
Publication Number | Publication Date |
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JP2000095650A JP2000095650A (en) | 2000-04-04 |
JP3828301B2 true JP3828301B2 (en) | 2006-10-04 |
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JP37065598A Expired - Fee Related JP3828301B2 (en) | 1998-07-21 | 1998-12-25 | Scalp cleanser |
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ES2362366T3 (en) * | 2005-03-12 | 2011-07-04 | Unilever N.V. | VISNADINE FOR THE TREATMENT OF THE CUTANEOUS PRURITE OF THE LEATHER CABELLUDO. |
JP7146489B2 (en) * | 2018-06-29 | 2022-10-04 | 小林製薬株式会社 | Liquid cleaning composition and its use |
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1998
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