JP3922311B2 - Skin aging prevention cosmetics - Google Patents

Skin aging prevention cosmetics Download PDF

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Publication number
JP3922311B2
JP3922311B2 JP30398896A JP30398896A JP3922311B2 JP 3922311 B2 JP3922311 B2 JP 3922311B2 JP 30398896 A JP30398896 A JP 30398896A JP 30398896 A JP30398896 A JP 30398896A JP 3922311 B2 JP3922311 B2 JP 3922311B2
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skin
acid
effect
aging
component
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JPH10130135A (en
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正 松井
洋一 井上
伸夫 北村
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Kao Corp
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Kao Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、皮膚老化防止化粧料に関し、更に詳しくは、優れた老化防止効果(荒れ肌改善効果、角質改善効果、ターンオーバー速度を早くする効果)、美肌効果を発現、付与し得る皮膚老化防止化粧料に関する。
【0002】
【従来の技術】
老化した皮膚は、皮膚表面が乾燥し荒れ肌様の状態になるが、これは角質層の水分保持機能の低下やバリヤー機能の低下、並びに皮脂分泌量の低下等に起因すると考えられている。また、表皮、真皮ともに細胞数の減少を伴い、代謝機能の低下が生じる。更に、表皮の酸化還元関連の酵素活性や皮膚の酸素分圧が低下し、角質層のターンオーバー速度が低下することが知られている。
一方、皮膚の大部分の構造を形成する成分として、コラーゲンとエラスチンがあり、皮膚の弾力性と柔軟性を左右しているといわれている。加齢によりこれらの成分の可溶性分画が減少し、架橋構造が形成され弾力性と柔軟性が低下すると考えられている。また、加齢によりコラーゲンの代謝が低下すると共に、皮膚の細胞間物質であるヒアルロン酸が顕著に減少し、皮膚の水分量の低下を招く。その結果、老化皮膚は全体的に萎縮して菲薄化した状態になり、柔軟性、弾力性や滑かさを失い、荒れた肌となる。
【0003】
このような老化した皮膚の改善剤として、皮膚表面に適度な湿潤感および柔軟性を与える種々の皮膚外用組成物が提案されている。例えば、特開平6−279258号公報では、α−ヒドロキシ酸とビタミンE群化合物またはその誘導体との結合複合体を配合した皮膚外用剤、あるいは、特開平6−279261号公報では、ムコ多糖と乳糖とを含有した皮膚外用剤などが提案されている。しかし、これらの皮膚外用剤は、皮膚組織の表皮へ作用するが、表皮の下の組織である真皮にも作用することは少ない。したがって、単なる皮膚への湿潤感や柔軟性を付与する効果は期待できるが、皮膚の老化防止の十分な効果は得られない。
【0004】
本発明者らは、低下した角質層の水分保持機能やバリヤー機能を改善するために、皮膚表皮層内部の細胞自身にセラミド合成を活発化させる方法を研究し、ニコチン酸誘導体等のセラミド合成促進剤を見出し提案した(特願平7−116367号)。
しかし、皮膚の一部分に着目した機能改善であるため、皮膚の老化防止効果として未だ十分とはいえない。
【0005】
【発明が解決しようとする課題】
本発明の目的は、老化防止効果(荒れ肌改善効果、角質改善効果、ターンオーバー速度を早くする効果)、および美肌効果を発現、付与し得る皮膚老化防止化粧料を提供することにある。
【0006】
【課題を解決するための手段】
本発明者らは、これらの実情からみて老化防止効果(荒れ肌改善効果、角質改善効果、ターンオーバー速度を早くする効果)、および美肌効果を発現、付与し得る優れた皮膚老化防止化粧料を鋭意探索した結果、下記の構成からなる皮膚老化防止化粧料がそれを満足することを見出した。
すなわち、本発明の目的は、(a)ニコチン酸アミドと、(b)尿素、炭素数が2〜28のα−ヒドロキシカルボン酸化合物からなる群から選ばれる一種以上とを含有する皮膚老化防止化粧料によって達成される。
【0007】
【発明の実施の形態】
本発明で(a)成分として使用するニコチン酸アミドは、公知の薬剤で第十二改正「日本薬局方」に収載されている。その性状は、白色の結晶または結晶性の粉末で、においはなく、味は苦い。また、分子量は122.13であり、水またはエタノールに溶けやすく、エーテルに溶けにくい。
その本質は、末梢循環障害用薬として、ペラグラ(ニコチン酸欠乏症候群、皮膚炎・光過敏症・下痢・精神障害などの症状が現れる)の予防および治療に用いられていたが、食生活の豊かな現代では、もはや無用の薬剤となった。むしろ、ビタミンB群の一員として、化粧品の分野で注目されている。
なお、本薬剤は、多くの皮膚病薬と同様に血管拡張作用を持たない。
【0008】
本発明で使用する(b)成分は、皮膚賦活作用物質としていずれも公知の化合物である。
すなわち、尿素は皮膚組織賦活成分として皮膚化粧料に広く使用されている物質である。
また、炭素数が2〜28のα−ヒドロキシカルボン酸化合物も同じく、皮膚化粧料に使用されている物質であり、例えば、グリコール酸(α−ヒドロキシエタン酸)、乳酸(α−ヒドロキシプロパン酸)、α−ヒドロキシヘキサン酸、α−ヒドロキシオクタン酸、α−ヒドロキシデカン酸、α−ヒドロキシドデカン酸、α−ヒドロキシヘキサデカン酸、α−ヒドロキシオクタデカン酸、α−ヒドロキシエイコサン酸、α−ヒドロキシドコサン酸、α−ヒドロキシヘキサコサン酸、α−ヒドロキシオクタコサン酸が挙げられる。
上記のα−ヒドロキシカルボン酸化合物のうちで、特に好ましいものは、グリコール酸、乳酸、α−ヒドロキシオクタン酸である。
なお、本発明で使用する上記α−ヒドロキシカルボン酸化合物とは、上記の酸の化合物以外に塩の化合物も含まれる。
そして、本発明では、これらの(b)成分と、(a)成分のニコチン酸アミドとを併用することによって始めて、その相乗作用によって、顕著な老化防止効果(荒れ肌改善効果、角質改善効果、ターンオーバー速度を早くする効果)、美肌効果を短期間で発現し付与するのである。
【0009】
本発明の皮膚老化防止化粧料における(a)成分のニコチン酸アミドの好適配合量は、その皮膚老化防止化粧料の総量を基準として、0.01〜20重量%(以下、wt%と略す)が好ましい。
【0010】
本発明の皮膚老化防止化粧料における(b)成分の尿素、炭素数が2〜28のα−ヒドロキシカルボン酸化合物からなる群から選ばれる一種以上の配合量は、その皮膚老化防止化粧料の総量を基準として、好ましくは0.001〜20wt%であり、更に好ましくは、0.01〜20wt%である。
特に、(b)成分は(a)成分に対して、0.1〜10倍量(重量)になるように配合することが好ましい。
【0011】
本発明の皮膚老化防止化粧料の剤型は、特に限定されるものでなく、クリーム状、乳液状、ローション状、軟膏状、パウダー状等々の通常の皮膚化粧料の剤型に適用することができる。
また、本発明の皮膚老化防止化粧料は、他の成分として、乳化剤、油性物質、保湿剤、増粘剤、香料、防腐剤、抗酸化剤、着色剤等を本発明の目的を達成する範囲内で適宜配合し得る。
【0012】
【実施例】
以下、実施例および比較例に基づいて本発明を詳細に説明する。なお、実施例に記載の(1)角質層のターンオーバー速度測定方法、(2)荒れ肌改善効果の測定方法、(3)角質改善効果の測定方法、(4)官能テストは下記の通りである。
【0013】
(1)角質層のターンオーバー速度測定方法
蛍光色素のダンシルクロリドを白色ワセリン中に5wt%配合した軟膏を作り、被験者20名の前腕部の皮膚に24時間閉塞貼付し、角質層にダンシルクロリドを浸透結合させた。その後、同じ部位に1日2回(朝、夕)被験試料を塗布し、毎日ダンシルクロリドの蛍光を調べ、その蛍光が消滅するまでの日数を皮膚角質層のターンオーバー速度とした。測定結果は各被験者の日数の平均値で示した。なお、通常の皮膚角質層のターンオーバーは14〜16日であるが、老化した皮膚においては18日前後に延びる。それに対して老化防止効果が現れると12日前後にまで短縮される。
【0014】
(2)荒れ肌改善効果の測定方法
下脚に荒れ肌を有する中高年被験者20名を対象として4週間連続塗布効果を調べた。すなわち、被験者の左側下脚試験部位に1日2回(朝、夕)被験試料を塗布し、試験開始前および終了後の皮膚の状態を下記表1の判定基準により判定した。なお、右側下脚は被験試料を塗布せず対照とした。
【0015】
【表1】

Figure 0003922311
【0016】
そして、試験前後の試験部位と対照部位の判定結果を比較し、皮膚乾燥度が2段階以上改善された場合(例えば:+→−、++→±)を「有効」、1段階改善された場合を「やや有効」、変化がなかった場合を「無効」とした。試験結果は「有効」、「やや有効」となった被験者の人数で示した。
【0017】
(3)角質改善(角質細胞の抗剥離性増大)効果の測定方法
前記の荒れ肌改善測定試験開始前後および終了後の被験部皮膚にスコッチテープ(ニチバン社メンディングテープ)を接着し、これを剥離したときテープに付着した角質細胞の状態を走査型電子顕微鏡によって詳細に調べ、下記表2の判定基準によって皮膚角質層細胞剥離性を分類し、角質改善効果を求めた。
【0018】
【表2】
Figure 0003922311
【0019】
判定は4週間連続塗布後の試験部位の評価点と対照部位のそれとの差が2点以上の場合を「有効」、1点以上の場合を「やや有効」、0点の場合を「無効」とした。試験結果は「有効」、「やや有効」となった被験者の人数で示した。
【0020】
(4)官能テスト(美肌効果)
荒れ肌、小じわ、乾燥肌等を訴える女子被験者(35〜55才)20人に被験試料を1日2回(朝、夕)連続3ケ月間塗布して、1、2、3ケ月後の効果を評価した。試験結果は、皮膚の湿潤性、平滑性、弾力性の各項目に対して、「皮膚に潤いが生じた」、「皮膚が滑らかになった」、「皮膚に張りが生じた」と回答した人数で示した。
【0021】
実施例1〜4、比較例1〜9(スキンクリーム)
(a)成分のニコチン酸アミド、(b)成分の尿素、グリコール酸、乳酸、α−ヒドロキシオクタン酸を表4に記載の通りに配合し、表3の組成で各々のスキンクリームを調製し、前記の諸実験を実施した。
【0022】
(1)組成
【0023】
【表3】
Figure 0003922311
【0024】
(2)調製方法
上記表3の(A)成分を70℃で溶解し、(B)成分と混合した後、78℃にした。次いで、これを75℃に加熱した(C)成分へ攪拌しながら徐々に加え、予備乳化を行った。その後、ホモジナイザーを用いて乳化を完全に行い、50℃に冷却後、(D)成分を添加し、30℃まで冷却し、スキンクリームを調製した。
【0025】
(3)特性
得られた各々スキンクリームについて諸試験を実施し、その結果を表4、5に示す。
【0026】
【表4】
Figure 0003922311
【0027】
【表5】
Figure 0003922311
【0028】
表4、5に示したように(a)成分のニコチン酸アミド、(b)成分の尿素、グリコール酸、乳酸、α−ヒドロキシオクタン酸を無配合、または単独配合した比較例1〜9のスキンクリームは諸特性において十分なる効果が得られなかった。
しかし、(a)成分のニコチン酸アミドと、(b)成分の尿素、グリコール酸、乳酸、α−ヒドロキシオクタン酸とを併用した実施例1〜4のスキンクリームは、荒れ肌改善効果、角質改善効果、ターンオーバー速度を早くする効果、すなわち、皮膚の老化防止効果において顕著な効果が認められ、また官能テストでも塗布後2ケ月で、湿潤性、平滑性、弾力性を発現し付与する効果が認められた。
【0029】
実施例5〜6、比較例10〜11(スキンローション)
下記表6、7の組成により、各々のスキンローションを調製して諸試験を実施した。
【0030】
(1)組成
【0031】
【表6】
Figure 0003922311
【0032】
【表7】
Figure 0003922311
【0033】
(2)調製方法
上記表6、7の成分を撹拌し均一に溶解してスキンローションを調製した。
【0034】
(3)特性
上記実施例5(表6)のスキンローションは比較例10〜11に比べ、優れた美肌効果と皮膚老化防止効果(荒れ肌改善効果、角質改善効果、ターンオーバー速度を早くする効果)を示した。
また、上記実施例6(表7)のスキンローションも同様に、優れた美肌効果と皮膚老化防止効果(荒れ肌改善効果、角質改善効果、ターンオーバー速度を早くする効果)を示した。
【0035】
実施例7(スキンミルク)
下記表8の組成にてスキンミルクを調製した。
【0036】
(1)組成
【0037】
【表8】
Figure 0003922311
【0038】
(2)調製方法
表8に記載の(A)成分、および(B)成分を均一に加熱溶解して温度を80℃にした。次いで、(A)成分中に、(B)成分を注入乳化した後、撹拌しながら30℃まで冷却し、スキンミルクを調製した。
【0039】
(3)特性
上記実施例7で得られたスキンミルクは、優れた皮膚老化防止効果(荒れ肌改善効果、角質改善効果、ターンオーバー速度を早くする効果)、美肌効果を示した。
【0040】
実施例8(スキンクリーム)
下記表9の組成にてスキンクリームを調製した。
【0041】
(1)組成
【0042】
【表9】
Figure 0003922311
【0043】
(2)調製方法
表9に記載の(A)成分、および(B)成分を均一に加熱溶解して温度を80℃にした。次いで、(A)成分中に、(B)成分を注入乳化した後、撹拌しながら30℃まで冷却し、スキンクリームを調製した。
【0044】
(3)特性
上記実施例8で得られたスキンクリームは、優れた皮膚老化防止効果(荒れ肌改善効果、角質改善効果、ターンオーバー速度を早くする効果)、美肌効果を示した。
【0045】
【発明の効果】
以上記載したように、本発明が、皮膚老化防止効果(荒れ肌改善効果、角質改善効果、ターンオーバー速度を速くする効果)、美肌効果に優れた皮膚老化防止化粧料を提供することは明らかである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a skin anti-aging cosmetic, and more particularly, an excellent anti-aging effect (rough skin improvement effect, keratin improvement effect, effect of increasing turnover speed), and skin aging prevention makeup capable of expressing and imparting a beautiful skin effect. Regarding fees.
[0002]
[Prior art]
Aged skin has a dry and rough skin-like skin surface, which is considered to be caused by a decrease in the moisture retention function and barrier function of the stratum corneum and a decrease in sebum secretion. In addition, both epidermis and dermis are accompanied by a decrease in the number of cells, resulting in a decrease in metabolic function. Furthermore, it is known that the redox-related enzyme activity of the epidermis and the oxygen partial pressure of the skin are reduced, and the turnover rate of the stratum corneum is reduced.
On the other hand, collagen and elastin are components that form most of the structure of the skin, and are said to influence the elasticity and flexibility of the skin. It is thought that the soluble fraction of these components decreases with aging, a crosslinked structure is formed, and elasticity and flexibility are lowered. In addition, collagen metabolism decreases with aging, and hyaluronic acid, which is an intercellular substance in the skin, significantly decreases, leading to a decrease in the amount of moisture in the skin. As a result, the aging skin is generally shrunken and thinned, losing flexibility, elasticity and smoothness, resulting in rough skin.
[0003]
As an ameliorating agent for such aged skin, various external compositions for skin that give a moderate moist feeling and softness to the skin surface have been proposed. For example, JP-A-6-279258 discloses an external preparation for skin containing a binding complex of an α-hydroxy acid and a vitamin E group compound or a derivative thereof, or JP-A-6-279261 discloses mucopolysaccharide and lactose. An external preparation for skin containing and has been proposed. However, these external preparations for skin act on the epidermis of the skin tissue, but rarely act on the dermis, which is a tissue under the epidermis. Accordingly, an effect of imparting a mere feeling of wetness and flexibility to the skin can be expected, but a sufficient effect of preventing skin aging cannot be obtained.
[0004]
In order to improve the water retention function and barrier function of the reduced stratum corneum, the present inventors have studied a method for activating ceramide synthesis in cells within the skin epidermis layer, and promoted ceramide synthesis such as nicotinic acid derivatives. An agent was found and proposed (Japanese Patent Application No. 7-116367).
However, since it is a functional improvement focused on a part of the skin, it is still not sufficient as an anti-aging effect on the skin.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to provide a skin aging prevention cosmetic that can exhibit and impart an anti-aging effect (rough skin improving effect, keratin improving effect, effect of increasing turnover speed) and a beautifying skin effect.
[0006]
[Means for Solving the Problems]
In view of these circumstances, the present inventors have earnestly developed an excellent anti-aging skin cosmetic that can exhibit and impart an anti-aging effect (rough skin improvement effect, keratin improvement effect, effect of increasing turnover speed), and a beautiful skin effect. As a result of the search, it was found that a skin aging preventive cosmetic comprising the following composition satisfies the requirements.
That is, an object of the present invention is to prevent skin aging from containing (a) nicotinamide and (b) one or more selected from the group consisting of urea and an α-hydroxycarboxylic acid compound having 2 to 28 carbon atoms. Achieved by a fee.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Nicotinamide used as the component (a) in the present invention is a known drug and is listed in the 12th revision “Japanese Pharmacopoeia”. Its properties are white crystals or crystalline powder, no smell, and bitter taste. Moreover, molecular weight is 122.13, and it is easy to melt | dissolve in water or ethanol, and is hard to melt | dissolve in ether.
The essence of this medicine was used to prevent and treat Pellagra (nicotinic acid deficiency syndrome, dermatitis / photosensitivity / diarrhea / psychiatric disorders, etc.) In modern times, it has become a useless drug. Rather, as a member of the vitamin B group, it attracts attention in the cosmetics field.
In addition, this drug does not have a vasodilating action like many dermatological drugs.
[0008]
The component (b) used in the present invention is a known compound as a skin activating agent.
That is, urea is a substance widely used in skin cosmetics as a skin tissue activating component.
Similarly, α-hydroxycarboxylic acid compounds having 2 to 28 carbon atoms are also used in skin cosmetics, such as glycolic acid (α-hydroxyethanoic acid), lactic acid (α-hydroxypropanoic acid). , Α-hydroxyhexanoic acid, α-hydroxyoctanoic acid, α-hydroxydecanoic acid, α-hydroxydodecanoic acid, α-hydroxyhexadecanoic acid, α-hydroxyoctadecanoic acid, α-hydroxyeicosanoic acid, α-hydroxydocosanoic acid , Α-hydroxyhexacosanoic acid and α-hydroxyoctacosanoic acid.
Among the above α-hydroxycarboxylic acid compounds, particularly preferred are glycolic acid, lactic acid, and α-hydroxyoctanoic acid.
The α-hydroxycarboxylic acid compound used in the present invention includes a salt compound in addition to the acid compound.
In the present invention, the combination of the component (b) and the nicotinamide of the component (a) is used together to produce a remarkable anti-aging effect (rough skin improvement effect, keratin improvement effect, turn, The effect of increasing the over speed) and the effect of beautifying the skin are expressed and imparted in a short period of time.
[0009]
The preferred blending amount of the nicotinamide as the component (a) in the skin aging prevention cosmetic of the present invention is 0.01 to 20% by weight (hereinafter abbreviated as wt%) based on the total amount of the skin aging prevention cosmetic. Is preferred.
[0010]
One or more compounding amounts selected from the group consisting of urea as component (b) and an α-hydroxycarboxylic acid compound having 2 to 28 carbon atoms in the skin antiaging cosmetic of the present invention are the total amount of the skin antiaging cosmetic. Is preferably 0.001 to 20 wt%, and more preferably 0.01 to 20 wt%.
In particular, the component (b) is preferably blended in an amount (weight) of 0.1 to 10 times that of the component (a).
[0011]
The dosage form of the skin anti-aging cosmetic of the present invention is not particularly limited, and can be applied to usual skin cosmetic dosage forms such as cream, emulsion, lotion, ointment, powder and the like. it can.
The skin anti-aging cosmetic composition of the present invention includes, as other components, emulsifiers, oily substances, moisturizers, thickeners, fragrances, preservatives, antioxidants, colorants and the like to achieve the object of the present invention. It can mix | blend suitably within.
[0012]
【Example】
Hereinafter, the present invention will be described in detail based on examples and comparative examples. In addition, (1) Method for measuring turnover speed of stratum corneum, (2) Method for measuring rough skin improving effect, (3) Method for measuring stratum corneum improving effect, (4) Sensory test described in Examples are as follows. .
[0013]
(1) Method for measuring turnover rate of stratum corneum Make an ointment containing dansyl chloride, a fluorescent dye, in white petrolatum and apply it to the skin of the forearms of 20 subjects for 24 hours. Osmotic bond was made. Thereafter, a test sample was applied to the same site twice a day (morning and evening), the fluorescence of dansyl chloride was examined every day, and the number of days until the fluorescence disappeared was defined as the turnover speed of the skin stratum corneum. The measurement result was shown by the average value of the days of each subject. The turnover of the normal skin stratum corneum is 14 to 16 days, but in aging skin, it extends to around 18 days. On the other hand, when the anti-aging effect appears, it is shortened to around 12 days.
[0014]
(2) Measuring method of rough skin improvement effect The effect of continuous application for four weeks was examined for 20 middle-aged and older subjects having rough skin on the lower leg. That is, the test sample was applied to the left lower leg test site of the subject twice a day (morning and evening), and the skin condition before and after the test was determined according to the criteria shown in Table 1 below. The right lower leg was used as a control without applying the test sample.
[0015]
[Table 1]
Figure 0003922311
[0016]
Then, comparing the test results before and after the test and the control site, when the skin dryness is improved by 2 levels or more (for example: + → −, ++ → ±) is “effective”, when 1 level is improved Is “slightly valid”, and when there is no change, “invalid” The test result was shown by the number of subjects who became “effective” and “somewhat effective”.
[0017]
(3) Measuring method of keratin improvement (increase anti-peeling property of keratinocytes) Adhesive Scotch tape (Nichiban Mending Tape) is attached to the skin of the test site before and after the start of the rough skin improvement measurement test, and then peeled off. Then, the state of the keratinocytes attached to the tape was examined in detail with a scanning electron microscope, and the skin horny layer cell detachability was classified according to the criteria shown in Table 2 below, and the keratin improving effect was determined.
[0018]
[Table 2]
Figure 0003922311
[0019]
Judgment is “valid” if the difference between the evaluation score of the test site after 4 weeks of continuous application and that of the control site is 2 or more, “slightly valid” if 1 or more, and “invalid” if 0 It was. The test result was shown by the number of subjects who became “effective” and “somewhat effective”.
[0020]
(4) Sensory test (beautifying skin effect)
Apply the test sample twice a day (morning, evening) for 3 consecutive months to 20 female subjects (35 to 55 years old) who complain of rough skin, fine lines, dry skin, etc. evaluated. The test results indicated that the skin was moisturized, smooth, and elastic, that the skin was moistened, the skin became smooth, and that the skin was stretched. Shown in number of people.
[0021]
Examples 1-4, Comparative Examples 1-9 (skin cream)
(A) Component nicotinamide, (b) component urea, glycolic acid, lactic acid, α-hydroxyoctanoic acid as shown in Table 4, each skin cream with the composition of Table 3, The above experiments were conducted.
[0022]
(1) Composition [0023]
[Table 3]
Figure 0003922311
[0024]
(2) Preparation method The component (A) in Table 3 was dissolved at 70 ° C, mixed with the component (B), and then brought to 78 ° C. Next, this was gradually added to the component (C) heated to 75 ° C. with stirring, and pre-emulsified. Thereafter, emulsification was performed completely using a homogenizer, and after cooling to 50 ° C., component (D) was added and cooled to 30 ° C. to prepare a skin cream.
[0025]
(3) Characteristics Various tests were conducted on each obtained skin cream, and the results are shown in Tables 4 and 5.
[0026]
[Table 4]
Figure 0003922311
[0027]
[Table 5]
Figure 0003922311
[0028]
As shown in Tables 4 and 5, skins of Comparative Examples 1 to 9 containing (a) nicotinic acid amide, (b) urea, glycolic acid, lactic acid, and α-hydroxyoctanoic acid not blended or blended alone. The cream did not have sufficient effects on various properties.
However, the skin creams of Examples 1 to 4 in which the nicotinic acid amide as the component (a) and urea, glycolic acid, lactic acid, and α-hydroxyoctanoic acid as the component (b) are used in combination have rough skin improvement effect and keratin improvement effect. The effect of increasing the turnover speed, that is, the remarkable effect on the anti-aging effect of the skin, is also observed in the sensory test, and the effect of expressing and imparting the wettability, smoothness, and elasticity is recognized 2 months after application. It was.
[0029]
Examples 5-6, Comparative Examples 10-11 (skin lotion)
Various skin lotions were prepared according to the compositions shown in Tables 6 and 7 below, and various tests were conducted.
[0030]
(1) Composition [0031]
[Table 6]
Figure 0003922311
[0032]
[Table 7]
Figure 0003922311
[0033]
(2) Preparation method The ingredients in Tables 6 and 7 were stirred and dissolved uniformly to prepare a skin lotion.
[0034]
(3) Characteristics The skin lotion of the above Example 5 (Table 6) is superior to Comparative Examples 10 to 11 in skin beautifying effect and skin aging preventing effect (rough skin improving effect, keratin improving effect, effect of increasing turnover speed). showed that.
Similarly, the skin lotion of Example 6 (Table 7) also exhibited excellent skin beautifying effects and skin aging preventing effects (rough skin improving effect, keratin improving effect, effect of increasing turnover speed).
[0035]
Example 7 (skin milk)
Skin milk was prepared with the composition shown in Table 8 below.
[0036]
(1) Composition [0037]
[Table 8]
Figure 0003922311
[0038]
(2) Preparation method The components (A) and (B) described in Table 8 were uniformly heated and dissolved to a temperature of 80 ° C. Next, the component (B) was injected into the component (A) and emulsified, and then cooled to 30 ° C. with stirring to prepare skin milk.
[0039]
(3) Characteristics The skin milk obtained in Example 7 showed excellent skin aging prevention effects (rough skin improvement effect, keratin improvement effect, effect of increasing turnover speed) and skin beautification effect.
[0040]
Example 8 (skin cream)
A skin cream was prepared with the composition shown in Table 9 below.
[0041]
(1) Composition [0042]
[Table 9]
Figure 0003922311
[0043]
(2) Preparation method The components (A) and (B) described in Table 9 were uniformly heated and dissolved to a temperature of 80 ° C. Next, the component (B) was injected into the component (A) and emulsified, and then cooled to 30 ° C. with stirring to prepare a skin cream.
[0044]
(3) Characteristics The skin cream obtained in Example 8 described above exhibited excellent skin aging prevention effects (rough skin improvement effect, keratin improvement effect, effect of increasing turnover speed) and skin beautification effect.
[0045]
【The invention's effect】
As described above, it is clear that the present invention provides a skin anti-aging cosmetic excellent in skin aging preventing effect (rough skin improving effect, keratin improving effect, effect of increasing turnover speed) and skin beautifying effect. .

Claims (1)

(a)ニコチン酸アミドと、(b)グリコール酸、乳酸、α−ヒドロキシヘキサン酸、α−ヒドロキシオクタン酸、α−ヒドロキシデカン酸、α−ヒドロキシドデカン酸、α−ヒドロキシヘキサデカン酸、α−ヒドロキシオクタデカン酸、α−ヒドロキシエイコサン酸、α−ヒドロキシドコサン酸、α−ヒドロキシヘキサコサン酸、α−ヒドロキシオクタコサン酸からなる群から選ばれる一種以上とを含有する皮膚老化防止化粧料。(A) Nicotinic acid amide and (b) glycolic acid, lactic acid, α-hydroxyhexanoic acid, α-hydroxyoctanoic acid, α-hydroxydecanoic acid, α-hydroxydodecanoic acid, α-hydroxyhexadecanoic acid, α-hydroxyoctadecane A skin aging prevention cosmetic comprising at least one selected from the group consisting of acid, α-hydroxyeicosanoic acid, α-hydroxydocosanoic acid, α-hydroxyhexacosanoic acid, and α-hydroxyoctacosanoic acid .
JP30398896A 1996-10-29 1996-10-29 Skin aging prevention cosmetics Expired - Fee Related JP3922311B2 (en)

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