JP2004300099A - Skin cosmetic - Google Patents
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- JP2004300099A JP2004300099A JP2003096925A JP2003096925A JP2004300099A JP 2004300099 A JP2004300099 A JP 2004300099A JP 2003096925 A JP2003096925 A JP 2003096925A JP 2003096925 A JP2003096925 A JP 2003096925A JP 2004300099 A JP2004300099 A JP 2004300099A
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Abstract
Description
【0001】
【発明の属する技術分野】
本発明は化粧水、乳液、クリーム、パック、ヘアトニック等の皮膚化粧料に関し、詳しくは使用時の感触が軽く、素早く肌になじみ、使用後はべたつかず、肌荒れ改善効果、しわ抑制効果に優れ、肌にはりを与える経時安定性に優れた皮膚化粧料に関する。
【0002】
【従来の技術】
通常、人の皮膚表面は皮脂膜に覆われ、水分の蒸散が適度に抑制されている。皮膚の水分を適度な範囲に保つことは、健康の面から非常に重要であり、水分が不足すると肌荒れ等の不具合が生じやすくなる。洗顔や入浴の後は、一時的に皮脂膜が取り除かれ、肌の水分が失われやすくなるので化粧水、乳液、クリーム、美容液等の保湿化粧料を使用して水分を補う必要がある。化粧料には保湿剤としてグリセリン、1,3−ブチレングリコール、ソルビトール等の多価アルコール類やピロリドンカルボン酸塩等が配合され、肌の潤いを保つだけでなく、肌荒れ防止や肌荒れ改善の効果を有している。しかし、これらの成分は、使用時に化粧料ののびを悪くし、使用後にはべたつきを有するなどの問題があった。
また、皮膚化粧料の機能を向上させるために、保湿剤とともに化粧料に配合される油分は、皮膚を柔軟にするとともに水分の蒸散を抑える効果を有している。しかし、油分は油分特有のべたつきを有し、また酸化されやすいため、一次刺激性、光毒性、光感作等の問題が生じることがあった。
優れた使用感と肌荒れ防止、改善効果を有する化粧料として、種々の保湿成分やビタミン類とグリチルリチン酸塩やグリチルレチン酸誘導体、アズレン誘導体等の抗炎症剤とを組み合わせた組成物が知られている(例えば、特許文献1〜4参照)。しかし、良好な使用感と充分な肌荒れ防止、改善効果を有する化粧料は得られていないのが現状であり、加齢や紫外線等に起因するしわの生成を効果的に抑制、改善し、はりとうるおいのある若々しい肌に整えるといった、皮膚の老化防止の効果を充分発揮するような化粧料は得られていなかった。
【0003】
【特許文献1】特開平7−277943号公報
【特許文献2】特開平6−32728号公報
【特許文献3】特開平8−99858号公報
【特許文献4】特開平9−241147号公報
【0004】
【発明が解決しようとする課題】
本発明は化粧水、乳液、クリーム、パック、ヘアトニック等の皮膚化粧料に関し、詳しくは使用時の感触が軽く、素早く肌になじみ、使用後はべたつかず、肌荒れ改善効果、しわ抑制効果に優れ、肌にはりを与える経時安定性に優れた皮膚化粧料を提供することを目的とする。
【0005】
【課題を解決するための手段】
すなわち、本発明は、
(1)下記のaを0.01〜30重量%、bを0.01〜30重量%含有する皮膚化粧料。
a.式(1)で示されるエチレンオキシド・プロピレンオキシド重合物(EO・PO)1モルに対して、ブチレンオキシド(BO)を1.5〜5.0モル反応して得られるアルキレンオキシド誘導体
HO−[(EO)m(PO)n]−H (1)
(式中、EOはオキシエチレン基、POはオキシプロピレン基を示す。m、nは平均付加モル数でありそれぞれ1〜70である。EOとPOとの重量比(EO/PO)は1/4〜4/1であり、ランダム状に付加してもブロック状に付加してもよい。)
b.水溶性多価アルコール
(2)c.抗炎症剤0.001〜10重量%含有する前記(1)記載の皮膚化粧料である。
【0006】
【発明の実際の形態】
本発明に用いるa成分のアルキレンオキシド誘導体は、式(1)で示されるエチレンオキシド・プロピレンオキシド重合物(EO・PO)1モルに対して、ブチレンオキシド(BO)を1.5〜5.0モル反応して得られる。
式(1)で示されるエチレンオキシド・プロピレンオキシド重合物(EO・PO)において、EOはオキシエチレン基、POは炭素数3〜4のオキシプロピレン基である。m、nは、それぞれの平均付加モル数であり1〜70、好ましくは1〜50である。m、nが70を超える場合は、使用時の感触、肌へのなじみが悪く、使用後のべたつきを生じるため好ましくない。
EOとPOの割合(EO/PO)は重量比で1/4〜4/1である。EO/POが1/4未満の場合は、肌のなじみ性が悪く、肌荒れ改善効果が弱いため好ましくない。4/1を超える場合は、しわ抑制効果、肌にはりを与える効果が弱いため好ましくない。EOとPOは、ランダム状に付加していてもブロック状に付加していても良いが、より高い肌荒れ効果を発揮するためには、ランダム状付加であることが好ましい。
【0007】
本発明に用いるa成分を構成するブチレンオキシドとしては、1,2−ブチレンオキシド、2,3−ブチレンオキシド、イソブチレンオキシドが挙げられるが、反応制御のしやすさ、入手容易性の点から、1,2−ブチレンオキシドの使用が好ましい。
【0008】
本発明に用いるa成分であるアルキレンオキシド誘導体は、公知の方法によって製造可能であるが、式(1)で示されるエチレンオキシド・プロピレンオキシド重合物(EO・PO)1モルに対する、ブチレンオキシド(BO)の反応モル数は、1.5〜5.0モルであり、好ましくは2.0〜4.0モルである。反応モル比が1.5モル未満の場合は、肌荒れ改善効果、しわ防止効果が弱く好ましくなく、5.0モルを超える場合は、使用時の感触、肌のなじみ不良である。
【0009】
本発明のa成分の含有量は、0.01〜30重量%であり、好ましくは0.05〜25重量%、より好ましくは0.1〜20重量%である。0.01重量%未満の場合は、使用時の感触、肌のなじみ性が悪く、肌荒れ改善効果、しわ抑制効果が弱く好ましくない。30重量%を超える場合は、肌にはりを与える効果が弱く、経時で臭気劣化等を生じやすく安定性が悪くなる。
【0010】
本発明に用いるb成分の水溶性多価アルコールは、分子内に水酸基を2個以上有する水溶性の化合物であり、例えば、プロピレングリコール、ジプロピレングリコール、イソプレングリコール、1,3−ブチレングリコール、グリセリン、ジグリセリン、ポリエチレングリコール、ソルビトール、マルチトール等が挙げられる。このうちジプロピレングリコール、イソプレングリコール、1,3−ブチレングリコール、グリセリン、ジグリセリン、ポリエチレングリコールの使用が好ましく、高い肌荒れ防止、改善効果を発揮する点から、より好ましくはグリセリン、ジグリセリンである。
【0011】
本発明のb成分の含有量は、0.01〜30重量%であり、好ましくは0.05〜25重量%、より好ましくは0.1〜20重量%である。0.01重量%未満の場合は、肌荒れ改善の効果、しわ抑制効果が弱く好ましくない。30重量%を超える場合は、使用時ののびが悪く、べたつき感が強くなり使用時の感触が悪くなる。
【0012】
また、良好な使用感と充分な肌荒れ改善効果、しわ抑制効果を得るために、a成分とb成分の重量比(a/b)が1/10〜10/1であることが好ましく、より好ましくは1/5〜5/1である。
【0013】
また、本発明の皮膚洗浄料においては、肌荒れ改善効果、しわ抑制効果の向上のために、c成分の抗炎症剤を含有することが好ましい。抗炎症剤としては、例えば、グリチルリチン酸およびその誘導体、グリチルレチン酸およびその誘導体、アラントインおよびその誘導体、グアイアズレン、インドメタシン、ケトプロフェン、ピロシキカム、アセトアミノフェン、アスピリン、サリチル酸、ブフェマキサク、スプロフェン、イブプロフェンピコノール、フルルビプロフェン、プラノプロフェン、ジクロフェナクナトリム、サリチル酸ナトリウム、ベンザダック、フェルビナク、ウフェルナマート、ヒドロコルチゾン、プレドニゾロン等が挙げられる。これらのうち、グリチルリチン酸およびその誘導体、グリチルレチン酸およびその誘導体、アラントインおよびその誘導体、グアイアズレンの使用が好ましく、より好ましくは、グリチルリチン酸およびその誘導体、グリチルレチン酸およびその誘導体、アラントインおよびその誘導体である。グリチルリチン酸の誘導体としては、グリチルリチン酸ジカリウム、グリチルリチン酸モノカリウム、グリチルリチン酸モノアンモニウム等が、グリチルレチン酸の誘導体としては、グリチルレチン酸ステアリル、グリチルレチン酸グリチルレチニル3−サクシニルオキシグリチルレチン酸ニナトリウム等が、アラントインの誘導体としては、アラントインクロルヒドロキシアルミニウム、アラントインジヒドロキシアルミニウム等が挙げられる。
【0014】
本発明の皮膚洗浄料において、c成分である抗炎症剤の含有量は、0.001〜10重量%であることが好ましく、より好ましくは0.01〜5重量%である。10重量%を超える場合は、べたつきを有したり、安定性に問題を生じる場合があるだけでなくコスト的にも不利である。
【0015】
なお、本発明の皮膚化粧料には、化粧料に常用されている添加剤を本発明の性能を損なわない範囲で含有することも可能である。例えば、低級アルコール、炭化水素系油、天然油脂類、合成トリグリセライド、エステル油、ロウ類、シリコーン誘導体、油性基剤、陰イオン性界面活性剤、両性界面活性剤、非イオン性界面活性剤、陽イオン性界面活性剤、半極性界面活性剤、水溶性高分子、有機または無機塩類、pH調製剤、殺菌剤、キレート剤、抗酸化剤、紫外線吸収剤、ビタミン類、動植物由来の天然エキス、色素、顔料、香料等を含有可能である。
【0016】
【実施例】
実施例によって本発明をさらに詳細に説明する。
実施例1〜4および比較例1〜3
表1に示す透明または半透明化粧水である皮膚化粧料を調製し、下記の方法により評価を行なった。結果を表1に示す。
【0017】
(1)使用時の感触
20名の女性(21才〜35才)をパネラーとし、洗顔した後に皮膚化粧料を使用した時の感触について下記のように判定し、20名の平均値を求めて、平均値1.5点以上を使用時の感触が良好な化粧料であると評価した。
2点:肌へののびが良く、べたつきがなく、軽い感触であると感じた場合。
1点:肌へののびがやや悪い、もしくはややべたつきがあり、若干重い感触であると感じた場合。
0点:肌へののびが悪い、もしくはべたつきがあり、重い感触であると感じた場合。
【0018】
(2)なじみ性
20名の女性(21才〜35才)をパネラーとし、洗顔した後に皮膚化粧料を使用した時の感触について下記のように判定し、20名の平均値を求めて、平均値1.5点以上をなじみ性の良い化粧料であると評価した。
2点:塗布すると、素早くなじむと感じた場合。
1点:塗布すると、やや肌へのなじみ性が悪いと感じた場合。
0点:塗布してもなかなか肌へなじまず、はじかれているように感じた場合。
【0019】
(3)使用後のべたつき
20名の女性(21才〜35才)をパネラーとし、洗顔した後に皮膚化粧料を使用して10分後の肌の感触について下記のように判定し、20名の平均値を求めて、平均値1.5点以上を使用後にべたつきがない化粧料であると評価した。
2点:肌がべたつかないと感じた場合。
1点:肌がややべたつくと感じた場合。
0点:肌が非常にべたつくと感じた場合。
【0020】
(4)肌荒れ改善効果
肌荒れを生じた10名の女性(24才〜34才)をパネラーとし、皮膚化粧料を一日2回ずつ連続2週間使用した時の肌の状態について下記のように判定し、20名の平均値を求めて、平均値1.5点以上を肌荒れ改善効果のある化粧料であると評価した。
2点:肌荒れが明らかに治ってきたと感じた場合。
1点:肌荒れがやや治ってきたと感じた場合。
0点:肌荒れの状態が使用前と変化が全く見られないと感じた場合。
【0021】
(5)しわ抑制効果
20名の女性(21才〜35才)をパネラーとし、皮膚化粧料を一日2回ずつ連続2週間使用した時の肌の状態について下記のように判定し、20名の平均値を求めて、平均値1.5点以上をしわ抑制効果に優れた化粧料であると評価した。2点:しわが明らかに目立たなくなったと感じた場合。
1点:しわがやや目立たなくなったと感じた場合。
0点:しわの状態が使用前と変化が全く見られないと感じた場合。
【0022】
(6)肌のはり
20名の女性(21才〜35才)をパネラーとし、皮膚化粧料を一日2回ずつ連続2週間使用した時の肌の状態について下記のように判定し、20名の平均値を求めて、平均値1.5点以上を肌にはりを与える効果のある化粧料であると評価した。
2点:明らかに肌にはりがでたと感じた場合。
1点:やや肌にはりがでたと感じた場合。
0点:肌にはりが使用前と変わらないと感じた場合。
【0023】
(7)経時安定性
化粧料を透明ガラス容器に密封して0℃、25℃、40℃で3ヶ月間保存し、その外観を観察して、下に示す3段階で評価した。
○:安定性良好(いずれの温度においても外観の変化がない。)
△:安定性やや不良(いずれかの温度において、若干のおり、沈殿、または着色を生じる。)
×:安定性不良(いずれかの温度において、おり、沈殿を生じる。または分離や著しい着色が見られる。)
【0024】
〈a成分:アルキレンオキシド誘導体〉
実施例1〜4に用いるa成分は、表2に示す組成のエチレンオキシド・プロピレンオキシド重合物(EO・PO)と、ブチレンオキシド(BO)とを反応させ得た、本発明のアルキレンオキシド誘導体A1〜A3と、比較用のアルキレンオキシド誘導体a1、a2を用いた。
【0025】
共通添加成分として表3に示す5成分を使用した。
【0026】
【表1】
【0027】
【表2】
【0028】
【表3】
【0029】
実施例1〜4より、本発明の化粧水はいずれも使用時の感触が良好で素早く肌へなじみ、使用後もべたつかず、肌荒れ改善効果、しわ抑制効果に優れ、肌にはりを与え、経時安定性にも優れていた。
一方、比較例1〜3では充分な性能が得られていない。比較例1ではa成分が配合されていないため、使用時の感触、肌へのなじみ性、べたつき、肌荒れ改善効果、しわ抑制効果が弱くなっており、比較例2では、a成分の(EO・PO)に対するBOの反応モル比が1.5を下回るため、比較例3ではb成分が配合されていないため、肌荒れ改善効果、しわ抑制効果が弱くなっている。
【0030】
実施例5〜7、比較例4〜6
表4に示す水中油型乳液である皮膚化粧料を調製し、実施例1〜4と同様の方法により評価を行なった。結果を表4に示す。
添加成分として表5の11成分を共通添加成分に使用し、a成分は表2に示す成分を使用した。
【0031】
【表4】
【0032】
【表5】
【0033】
実施例5〜7より、本発明の乳液はいずれも使用時の感触が良好で、素早く肌へなじみ、使用後もべたつかず、肌荒れ改善効果、しわ抑制効果に優れ、肌にはりを与え、経時安定性にも優れていた。
一方、比較例4〜6では十分な性能が得られていない。比較例4ではa成分が配合されていないことから、使用時の感触、肌へのなじみ性、べたつき、肌荒れ改善効果、しわ抑制効果が弱くなっており、比較例5ではb成分が配合されていないことから、肌荒れ改善効果、しわ抑制効果が弱くなっている。また、比較例6では、EO/POが4を超え、(EO・PO)に対するBOの反応モル比が1.5を下回るため、肌荒れ改善効果、しわ抑制効果、および肌のはりが弱かった。
【0034】
実施例8、9
表6に示す水中油型クリームである皮膚化粧料を調製し、評価方法については、(1)〜(6)は実施例1〜4の方法により、そして(7)経時安定性については下記の方法により評価を行なった。結果を表6に示す。
添加成分として表7に示す12成分を共通添加成分に使用し、a成分は表2に示す成分を使用した。
【0035】
【表6】
【0036】
【表7】
【0037】
(7)経時安定性
化粧料を透明ガラス容器に密封して−5℃、25℃、45℃で1ヶ月間保存したときの状態を調査し、下に示す3段階で評価した。
○:安定性良好(いずれの温度においても外観の変化がない。)
△:安定性やや不良(いずれかの温度において、僅かに沈殿、分離が見られる。または僅かにブツ、ダマを生じている。)
×:安定性不良(いずれかの温度において、明らかに沈殿、分離が見られる。またはブツやダマを生じる。)
【0038】
実施例8、9より、本発明のクリームはいずれも使用時の感触が良好で、素早く肌へなじみ、使用後もべたつかず、肌荒れ改善効果、しわ抑制効果に優れるとともに肌にはりを与え、経時安定性にも優れていた。
【0039】
実施例10、11
表6に示す油中水型クリームである皮膚化粧料を調製し、実施例8、9の方法により評価を行なった。結果を表6に示す。
添加成分として表8に示す12成分を共通添加成分に使用し、a成分は表2に示す成分を使用した。
【0040】
【表8】
【0041】
実施例10、11より、本発明のクリームはいずれも使用時の感触が良好で素早く肌へなじみ、使用後もべたつかず、肌荒れ改善効果、しわ抑制効果に優れ、肌にはりを与え、経時安定性にも優れていた。
【0042】
【発明の効果】
以上記載のように、本発明の皮膚化粧料は使用時の感触が良好で素早く肌へなじみ、使用後もべたつかず、肌荒れ改善効果、しわ抑制効果に優れるとともに肌にはりを与え、経時安定性にも優れていた。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to skin cosmetics such as lotions, milky lotions, creams, packs, and hair tonics, and more specifically, has a light feel at the time of use, adapts quickly to the skin, is non-sticky after use, has an excellent skin roughness improving effect, and an excellent wrinkle suppressing effect. The present invention relates to a skin cosmetic which gives skin a skin and has excellent stability over time.
[0002]
[Prior art]
Normally, the surface of human skin is covered with a sebum film, and the evaporation of water is appropriately suppressed. It is very important from the viewpoint of health to keep the moisture of the skin in an appropriate range, and if the moisture is insufficient, problems such as rough skin tend to occur. After washing the face or taking a bath, the sebum film is temporarily removed, and the moisture of the skin is easily lost. Therefore, it is necessary to supplement the moisture with a moisturizing cosmetic such as a lotion, a milky lotion, a cream, and a serum. Cosmetic products contain polyhydric alcohols such as glycerin, 1,3-butylene glycol, sorbitol, and pyrrolidone carboxylate as moisturizers, which not only keep the skin moist, but also prevent skin roughness and improve skin roughness. Have. However, these components have problems in that the cosmetics spread poorly during use and have stickiness after use.
Further, in order to improve the function of the skin cosmetic, the oil component added to the cosmetic together with the humectant has the effect of softening the skin and suppressing the evaporation of moisture. However, the oil component has stickiness peculiar to the oil component and is easily oxidized, so that problems such as primary irritation, phototoxicity, and photosensitization may occur.
As a cosmetic having an excellent feeling of use and prevention of rough skin, an effect of improvement, a composition in which various moisturizing ingredients and vitamins are combined with an anti-inflammatory agent such as glycyrrhizinate, a glycyrrhetinic acid derivative, and an azulene derivative is known. (For example, refer to Patent Documents 1 to 4). However, at present, cosmetics having a good feeling of use, sufficient prevention of skin roughness, and improvement effects have not been obtained, and the generation of wrinkles due to aging, ultraviolet rays, etc. is effectively suppressed and improved. There has been no cosmetic preparation that can sufficiently exhibit the effect of preventing skin aging, such as providing a moist and youthful skin.
[0003]
[Patent Document 1] JP-A-7-277943 [Patent Document 2] JP-A-6-32728 [Patent Document 3] JP-A 8-99858 [Patent Document 4] JP-A 9-241147 ]
[Problems to be solved by the invention]
The present invention relates to skin cosmetics such as lotions, milky lotions, creams, packs, and hair tonics, and more specifically, has a light feel at the time of use, adapts quickly to the skin, is non-sticky after use, has an excellent skin roughness improving effect, and an excellent wrinkle suppressing effect. Another object of the present invention is to provide a skin cosmetic which gives a skin apposition and has excellent stability over time.
[0005]
[Means for Solving the Problems]
That is, the present invention
(1) Skin cosmetics containing the following a in 0.01 to 30% by weight and b in 0.01 to 30% by weight.
a. The alkylene oxide derivative HO-[() obtained by reacting 1.5 to 5.0 mol of butylene oxide (BO) with respect to 1 mol of the ethylene oxide / propylene oxide polymer (EO / PO) represented by the formula (1). EO) m (PO) n] -H (1)
(Wherein EO represents an oxyethylene group and PO represents an oxypropylene group. M and n each represent an average number of moles of 1 to 70. The weight ratio (EO / PO) of EO and PO is 1 / 4 to 4/1, and may be added randomly or in blocks.)
b. Water-soluble polyhydric alcohol (2) c. The skin cosmetic according to the above (1), comprising 0.001 to 10% by weight of an anti-inflammatory agent.
[0006]
[Practical mode of the invention]
The alkylene oxide derivative of the component a used in the present invention is such that 1.5 to 5.0 mol of butylene oxide (BO) is added to 1 mol of the ethylene oxide / propylene oxide polymer (EO · PO) represented by the formula (1). Obtained by reaction.
In the ethylene oxide / propylene oxide polymer (EO · PO) represented by the formula (1), EO is an oxyethylene group, and PO is an oxypropylene group having 3 to 4 carbon atoms. m and n are the respective average number of moles added, and are 1 to 70, preferably 1 to 50. When m and n are more than 70, the feeling at the time of use and the adaptation to the skin are poor, and stickiness after use is undesirably generated.
The ratio of EO to PO (EO / PO) is 1/4 to 4/1 by weight. When EO / PO is less than 1/4, the skin conformability is poor and the effect of improving skin roughness is weak, which is not preferable. If it exceeds 4/1, the effect of suppressing wrinkles and the effect of imparting skin to the skin is weak, which is not preferable. EO and PO may be added in a random shape or in a block shape, but are preferably added in a random shape in order to exhibit a higher roughening effect.
[0007]
Examples of the butylene oxide constituting the component a used in the present invention include 1,2-butylene oxide, 2,3-butylene oxide and isobutylene oxide. From the viewpoint of easy control of the reaction and availability, 1 The use of 2,2-butylene oxide is preferred.
[0008]
The alkylene oxide derivative as the component a used in the present invention can be produced by a known method. Butylene oxide (BO) is used per mole of the ethylene oxide / propylene oxide polymer (EO / PO) represented by the formula (1). Is from 1.5 to 5.0 moles, and preferably from 2.0 to 4.0 moles. When the reaction molar ratio is less than 1.5 mol, the effect of improving skin roughness and the effect of preventing wrinkles are weak, which is not preferable. When the molar ratio exceeds 5.0 mol, the feel during use and poor adaptation of the skin are poor.
[0009]
The content of the component a of the present invention is 0.01 to 30% by weight, preferably 0.05 to 25% by weight, and more preferably 0.1 to 20% by weight. If the amount is less than 0.01% by weight, the feel at the time of use and the conformability of the skin are poor, and the skin roughness improving effect and the wrinkle suppressing effect are weak, which is not preferable. If it exceeds 30% by weight, the effect of giving a skin a weakness is weak, and odor deterioration or the like is likely to occur over time, resulting in poor stability.
[0010]
The water-soluble polyhydric alcohol of the component b used in the present invention is a water-soluble compound having two or more hydroxyl groups in the molecule, for example, propylene glycol, dipropylene glycol, isoprene glycol, 1,3-butylene glycol, glycerin , Diglycerin, polyethylene glycol, sorbitol, maltitol and the like. Of these, dipropylene glycol, isoprene glycol, 1,3-butylene glycol, glycerin, diglycerin, and polyethylene glycol are preferred, and glycerin and diglycerin are more preferred from the viewpoint of exhibiting high skin roughness prevention and improvement effects.
[0011]
The content of the component b of the present invention is 0.01 to 30% by weight, preferably 0.05 to 25% by weight, and more preferably 0.1 to 20% by weight. If the amount is less than 0.01% by weight, the effect of improving rough skin and the effect of suppressing wrinkles are weak, which is not preferable. If it exceeds 30% by weight, the spread during use is poor, the sticky feeling becomes strong, and the feel during use becomes poor.
[0012]
Further, in order to obtain a good feeling in use, a sufficient skin roughness improving effect, and a wrinkle suppressing effect, the weight ratio (a / b) of the component a and the component b is preferably 1/10 to 10/1, and more preferably. Is 1/5 to 5/1.
[0013]
In addition, the skin cleanser of the present invention preferably contains an anti-inflammatory agent of component c for improving the effect of improving rough skin and the effect of suppressing wrinkles. Examples of anti-inflammatory agents include glycyrrhizic acid and its derivatives, glycyrrhetinic acid and its derivatives, allantoin and its derivatives, guaiazulene, indomethacin, ketoprofen, piroskicam, acetaminophen, aspirin, salicylic acid, bufemaxac, suprofen, ibuprofen piconol, and furul Examples include biprofen, pranoprofen, diclofenacnatrim, sodium salicylate, benzadac, felbinac, ufernamat, hydrocortisone, prednisolone and the like. Of these, glycyrrhizic acid and its derivatives, glycyrrhetinic acid and its derivatives, allantoin and its derivatives, and guaiazulene are preferably used, and more preferably glycyrrhizic acid and its derivatives, glycyrrhetinic acid and its derivatives, and allantoin and its derivatives. Derivatives of glycyrrhizic acid include dipotassium glycyrrhizinate, monopotassium glycyrrhizinate, monoammonium glycyrrhizinate and the like, and derivatives of glycyrrhetinic acid include stearyl glycyrrhetinate, glycyrrhetinyl glycyrrhetinyl 3-succinyloxyglycyrrhetinate disodium and the like. Derivatives include allantoinchlorohydroxyaluminum, allantoindihydroxyaluminum and the like.
[0014]
In the skin cleanser of the present invention, the content of the anti-inflammatory agent as the component c is preferably 0.001 to 10% by weight, more preferably 0.01 to 5% by weight. If it exceeds 10% by weight, it may have stickiness, cause a problem in stability, and be disadvantageous in cost.
[0015]
It should be noted that the skin cosmetic of the present invention may contain additives commonly used in cosmetics as long as the performance of the present invention is not impaired. For example, lower alcohols, hydrocarbon oils, natural fats and oils, synthetic triglycerides, ester oils, waxes, silicone derivatives, oily bases, anionic surfactants, amphoteric surfactants, nonionic surfactants, cations Ionic surfactants, semi-polar surfactants, water-soluble polymers, organic or inorganic salts, pH adjusters, bactericides, chelating agents, antioxidants, ultraviolet absorbers, vitamins, natural extracts from animals and plants, pigments , Pigments, fragrances and the like.
[0016]
【Example】
The present invention will be described in more detail by way of examples.
Examples 1-4 and Comparative Examples 1-3
Skin cosmetics, which are transparent or translucent lotions shown in Table 1, were prepared and evaluated by the following methods. Table 1 shows the results.
[0017]
(1) Feeling at the time of use Twenty women (21 to 35 years old) were used as panelists, and the feeling at the time of using the skin cosmetic after washing their faces was determined as follows, and the average value of the 20 women was determined. The average value of 1.5 or more was evaluated as a cosmetic having a good feel when used.
2 points: When feeling that the skin spreads well, there is no stickiness, and the feel is light.
1 point: The skin spreads slightly poorly or is slightly sticky, and is felt to be slightly heavy.
0 point: The skin does not spread well or is sticky, and it feels heavy.
[0018]
(2) The familiarity of 20 women (21 to 35 years old) was used as a panel, and the feeling when using skin cosmetics after washing their faces was determined as follows. A value of 1.5 or more was evaluated as a cosmetic having good conformability.
2 points: When felt that it quickly adapts when applied.
1 point: When applied, the skin feels slightly poor adaptability to the skin.
0 points: When applied, it does not easily adapt to the skin, and is felt as being repelled.
[0019]
(3) Twenty sticky women after use (21 to 35 years old) were used as panelists, and after washing their face, using the skin cosmetics, the feeling of the skin after 10 minutes was judged as follows, and the results were as follows. The average value was determined, and an average value of 1.5 or more was evaluated as a non-sticky cosmetic after use.
2 points: If you feel that your skin is not sticky.
1 point: When the skin feels slightly sticky.
0 point: When the skin is felt to be very sticky.
[0020]
(4) Skin roughness improvement effect Ten women (24 to 34 years old) who had rough skin were used as panelists, and the skin condition was determined as follows when skin cosmetics were used twice a day for two consecutive weeks. Then, an average value of 20 persons was obtained, and an average value of 1.5 or more was evaluated as a cosmetic having an effect of improving skin roughness.
2 points: When the user feels that the rough skin has clearly recovered.
1 point: When the user feels that the rough skin has healed a little.
0 point: When the user feels that the rough skin state has not changed at all before use.
[0021]
(5) Wrinkle suppression effect Twenty women (21 to 35 years old) were panelists, and the skin condition was determined as follows when the skin cosmetic was used twice a day for two consecutive weeks. The average of 1.5 points or more was evaluated as a cosmetic having an excellent wrinkle suppressing effect. 2 points: When wrinkles are felt to be clearly inconspicuous.
1 point: When wrinkles are felt to be slightly inconspicuous.
0 point: When the user felt that the wrinkled state did not change at all before use.
[0022]
(6) Skin Beam 20 women (21 to 35 years old) were panelists, and the skin condition was determined as follows when skin cosmetics were used twice a day for 2 consecutive weeks, and 20 women were judged as follows. The average of 1.5 points or more was evaluated as a cosmetic having an effect of giving a skin stick.
2 points: When the skin is clearly felt to be peeled.
1 point: If you feel that the skin is slightly peeled.
0 point: When the skin feels the same as before use.
[0023]
(7) Stability over time The cosmetic was sealed in a transparent glass container and stored at 0 ° C., 25 ° C., and 40 ° C. for 3 months, and its appearance was observed and evaluated according to the following three grades.
:: Good stability (no change in appearance at any temperature)
B: Slightly poor stability (at any temperature, slight precipitation, or coloring occurs)
X: Poor stability (at any temperature, precipitation occurs, or separation or remarkable coloring is observed)
[0024]
<Component a: alkylene oxide derivative>
The component a used in Examples 1 to 4 was an alkylene oxide derivative A1 of the present invention obtained by reacting an ethylene oxide / propylene oxide polymer (EO / PO) having the composition shown in Table 2 with butylene oxide (BO). A3 and alkylene oxide derivatives a1 and a2 for comparison were used.
[0025]
The five components shown in Table 3 were used as common additive components.
[0026]
[Table 1]
[0027]
[Table 2]
[0028]
[Table 3]
[0029]
From Examples 1 to 4, all of the lotions of the present invention have a good feel at the time of use and adapt quickly to the skin, are not sticky even after use, have an excellent skin roughness improving effect, an excellent wrinkle suppressing effect, and give skin a sticking, The stability was also excellent.
On the other hand, in Comparative Examples 1 to 3, sufficient performance was not obtained. In Comparative Example 1, since the component a was not blended, the feel at the time of use, the conformability to the skin, the stickiness, the effect of improving rough skin, and the effect of suppressing wrinkles were weak. In Comparative Example 2, the (EO · Since the reaction molar ratio of BO to PO) is less than 1.5, in Comparative Example 3, the component b is not blended, so that the skin roughness improving effect and the wrinkle suppressing effect are weak.
[0030]
Examples 5-7, Comparative Examples 4-6
Skin cosmetics which were oil-in-water emulsions shown in Table 4 were prepared and evaluated in the same manner as in Examples 1 to 4. Table 4 shows the results.
As the additive components, 11 components in Table 5 were used as common additive components, and the component shown in Table 2 was used as the component a.
[0031]
[Table 4]
[0032]
[Table 5]
[0033]
From Examples 5 to 7, all of the emulsions of the present invention have a good feel when used, quickly adapt to the skin, are not sticky even after use, are excellent in the effect of improving rough skin and suppressing wrinkles, and give skin a sticking effect. The stability was also excellent.
On the other hand, in Comparative Examples 4 to 6, sufficient performance was not obtained. In Comparative Example 4, since the component a was not blended, the feel at the time of use, the conformability to the skin, the stickiness, the effect of improving skin roughness, and the effect of suppressing wrinkles were weak, and in Comparative Example 5, the component b was blended. As a result, the effect of improving rough skin and the effect of suppressing wrinkles are weakened. In Comparative Example 6, since EO / PO exceeded 4, and the reaction molar ratio of BO to (EO · PO) was less than 1.5, the skin roughness improving effect, wrinkle suppressing effect, and skin sticking were weak.
[0034]
Examples 8 and 9
Skin cosmetics which are oil-in-water creams shown in Table 6 were prepared, and evaluation methods were as follows: (1) to (6) were according to the methods of Examples 1 to 4; Evaluation was performed by the method. Table 6 shows the results.
As the additive components, 12 components shown in Table 7 were used as common additive components, and the component a shown in Table 2 was used as the component a.
[0035]
[Table 6]
[0036]
[Table 7]
[0037]
(7) Stability over time The cosmetics were sealed in a transparent glass container and stored at -5 ° C, 25 ° C, and 45 ° C for one month, and the state was evaluated.
:: Good stability (no change in appearance at any temperature)
Δ: Slightly poor stability (at any temperature, precipitation or separation was slightly observed, or slight bumps or lumps were generated)
X: Poor stability (precipitation and separation are clearly observed at any temperature, or lumps or lumps are generated)
[0038]
According to Examples 8 and 9, the creams of the present invention all have a good feel when used, quickly adapt to the skin, are not sticky even after use, are excellent in the effect of improving rough skin and suppressing wrinkles, and give the skin a peeling effect. The stability was also excellent.
[0039]
Examples 10 and 11
Skin cosmetics, which are water-in-oil creams shown in Table 6, were prepared and evaluated by the methods of Examples 8 and 9. Table 6 shows the results.
As the additive components, 12 components shown in Table 8 were used as common additive components, and the component a shown in Table 2 was used as the component a.
[0040]
[Table 8]
[0041]
From Examples 10 and 11, the creams of the present invention all have a good feel when used and are quickly applied to the skin, they are not sticky even after use, are excellent in improving skin roughness and suppressing wrinkles, give skin to skin, and are stable over time. It was also excellent.
[0042]
【The invention's effect】
As described above, the skin cosmetic of the present invention has a good feel at the time of use and adapts quickly to the skin, is not sticky even after use, has an excellent skin roughness improving effect, an excellent wrinkle suppressing effect, and gives a skin affixation, and stability over time. Was also excellent.
Claims (2)
a.式(1)で示されるエチレンオキシド・プロピレンオキシド重合物(EO・PO)1モルに対して、ブチレンオキシド(BO)を1.5〜5.0モル反応して得られるアルキレンオキシド誘導体
HO−[(EO)m(PO)n]−H (1)
(式中、EOはオキシエチレン基、POはオキシプロピレン基を示す。m、nは平均付加モル数でありそれぞれ1〜70である。EOとPOとの重量比(EO/PO)は1/4〜4/1であり、ランダム状に付加してもブロック状に付加してもよい。)
b.水溶性多価アルコールSkin cosmetics containing the following a in 0.01 to 30% by weight and b in 0.01 to 30% by weight.
a. The alkylene oxide derivative HO-[() obtained by reacting 1.5 to 5.0 mol of butylene oxide (BO) with respect to 1 mol of the ethylene oxide / propylene oxide polymer (EO / PO) represented by the formula (1). EO) m (PO) n] -H (1)
(Wherein EO represents an oxyethylene group and PO represents an oxypropylene group. M and n each represent an average number of moles of 1 to 70. The weight ratio (EO / PO) of EO and PO is 1 / 4 to 4/1, and may be added randomly or in blocks.)
b. Water-soluble polyhydric alcohol
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