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JP3653061B2 - Transparent cosmetic composition - Google Patents

Transparent cosmetic composition Download PDF

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Publication number
JP3653061B2
JP3653061B2 JP2002137634A JP2002137634A JP3653061B2 JP 3653061 B2 JP3653061 B2 JP 3653061B2 JP 2002137634 A JP2002137634 A JP 2002137634A JP 2002137634 A JP2002137634 A JP 2002137634A JP 3653061 B2 JP3653061 B2 JP 3653061B2
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Japan
Prior art keywords
fatty acid
water
oil
cosmetic composition
weight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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JP2002137634A
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Japanese (ja)
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JP2003327506A (en
Inventor
玲子 寺田
安則 野口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sakamoto Yakuhin Kogyo Co Ltd
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Sakamoto Yakuhin Kogyo Co Ltd
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/34Alcohols
    • A61K8/345Alcohols containing more than one hydroxy group
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/37Esters of carboxylic acids
    • A61K8/375Esters of carboxylic acids the alcohol moiety containing more than one hydroxy group
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/10Washing or bathing preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00Preparations for care of the hair
    • A61Q5/02Preparations for cleaning the hair
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/20Chemical, physico-chemical or functional or structural properties of the composition as a whole
    • A61K2800/26Optical properties
    • A61K2800/262Transparent; Translucent

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Emergency Medicine (AREA)
  • Birds (AREA)
  • Epidemiology (AREA)
  • Dermatology (AREA)
  • Cosmetics (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transparent cosmetic composition not containing a polyoxyalkylene derivative which is a nonionic surfactant, using only a polyglycerol fatty acid ester, instantaneously forming O/W emulsion when comes into contact with water or warm water, having transparent appearance and good temperature stability in both of the low-temperature area and the high- temperature area and being utilizable for bathing agents such as bath oil increasing bathing effect by adding it to hot water of a bathtub, cosmetics such as cleansing oil suitable also for hard make because of good compatibility with a material for making-up and toiletry products such as cleansing agents of scalp before shampooing. <P>SOLUTION: The transparent cosmetic composition comprises (A) 5.0-20.0 wt.% polyglycerol fatty acid ester obtained by esterifying a polyglycerol having 2-10 average polymerization degree with one or more kinds of fatty acids selected from a 12-22C saturated fatty acid and unsaturated fatty acid, (B) 15.0-40.0 wt.% di- or more polyhydric alcohol, (C) 0.01-5.0 wt.% water and an oil. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【産業上の利用分野】
本発明は、非イオン界面活性剤であるポリオキシアルキレン誘導体を含有せず、ポリグリセリン脂肪酸エステルのみを用いた、水や温水と接した場合に瞬時にO/Wエマルションを形成する乳化性能が極めて良好で、且つ外観が透明で、低温域および高温域の両方において温度安定性が良好である透明化粧料組成物に関するものである。更に詳しくは、浴槽の湯に添加して入浴効果を高めるバスオイル等の入浴剤や、メークとの馴染みが特に良好でハードメークにも適したクレンジングオイル等の化粧品、シャンプー前の頭皮の洗浄料等のトイレタリー製品等に良好な性能を示す透明化粧料組成物に関するものである。
【0002】
【従来の技術】
医薬品、化粧品、及び食料品の界面活性剤として有用であるポリグリセリン脂肪酸エステルは、脂肪酸とポリグリセリンとをエステル化することによって得られる。母核のポリグリセリンは一般的にはグリセリンの縮合による場合が多く、このように、ポリグリセリン脂肪酸エステルはグリセリンを出発物質としているため、皮膚刺激が少なく、安全性において殆ど問題のない界面活性剤である。このことから、最近はより安全性を高める目的で、皮膚刺激が懸念される従来の石油系ポリオキシアルキレン誘導体を使用せず、天然由来の安全性に優れたポリグリセリン脂肪酸エステルを用いた処方系が望まれるケースが増えてきている。
【0003】
しかし、ポリグリセリン脂肪酸エステルは化粧品分野、特に油性成分を基剤とした系に少量の界面活性剤を配合し、水や温水と接した場合に瞬時にO/Wエマルションを形成することが求められる製品、例えばバスオイル等の入浴剤や、クレンジングオイル等に配合する界面活性剤として使用される場合が非常に少なく、一般にはポリオキシアルキレン誘導体、具体的にはポリオキシエチレン鎖を有する非イオン界面活性剤を使用する場合が殆どであった。その理由としては、バスオイルやクレンジングオイルに必要な機能、即ち、水と接した場合に瞬時にO/Wエマルションを形成する機能が不十分であったり、外観の透明性や経時的安定性が悪かったりする等の問題があった。本発明者は先に、上記課題を解決することを見出し提案している(特願2002−063521)。しかし、このものは、水と接した場合に瞬時にO/Wエマルションを形成するが、乳化性能が不十分であり、改良の余地が残されていた。例えば、バスオイルとして、浴槽の湯に投入して利用した場合、瞬時に白く濁りO/Wエマルションを形成するが、経時的に湯上に油滴が発生する問題があった。また、クレンジングオイル等の化粧品やシャンプー前の頭皮の洗浄料等のトイレタリー製品等に利用した場合も配合している油性原料の全てが乳化仕切れずに、それらが皮膚や頭皮、毛髪に付着し残るため、油性感が発現し、官能上不快となる問題点があった。
【0004】
【発明が解決しようとする課題】
そこで本発明者は、上記の事情に鑑み、非イオン界面活性剤であるポリオキシアルキレン誘導体を含有せず、ポリグリセリン脂肪酸エステルを用いた処方系において、バスオイル、クレンジングオイルに必要な機能、すなわち水と接した場合に瞬時にO/Wエマルションを形成する乳化性能が極めて良好で、且つ外観の透明性が良好で、低温域および高温域の両方の経時的温度安定性に優れた透明化粧料組成物を得ることを目的とした。
【0005】
【問題を解決するための手段】
本発明者は、上記課題を達成するために鋭意研究した結果、特定のポリグリセリン脂肪酸エステル、2価以上の多価アルコール、水を含有する透明化粧料組成物が、上記課題を解決し得ることを見出し、本発明を完成するに至った。
【0006】
即ち、本発明は次の成分(A)〜(C):
(A)平均重合度が2〜10のポリグリセリンと、炭素数12〜22の飽和脂肪酸及び不飽和脂肪酸より選ばれた1種又は2種以上の脂肪酸とをエステル化して得られる、ポリグリセリン脂肪酸エステル5.0〜20.0重量%
(B)2価以上の多価アルコール15.0〜40.0重量%
(C)水0.01〜5.0重量%
及び油分から成る、水や温水と接した場合に瞬時にO/Wエマルションを形成する乳化性能が極めて良好で且つ、外観の透明性が良好で、低温域および高温域の両方の経時的温度安定性が良好な透明化粧料組成物に関するものである。
【0007】
前記、非イオン界面活性剤であるポリオキシアルキレン誘導体とは、一般にポリオキシエチレンが付加した界面活性剤を指す。例えば、ポリオキシエチレンラウリルエーテル、ポリオキシエチレンセチルエーテル、ポリオキシエチレンオクチルドデシルエーテル、ポリオキシエチレンオレイルエーテル、ポリオキシエチレン硬化ヒマシ油等のエーテル系のものや、ポリオキシエチレンモノステアレート、ポリオキシエチレンオレート、ポリオキシエチレンイソステアレート等のエステル系、ポリオキシエチレン・ポリオキシプロピレン共重合体等が挙げられる。本発明ではこのようなポリオキシアルキレン誘導体を使用せず透明化粧料組成物を得る。以下、本発明を詳細に説明する。
【0008】
本発明で使用するポリグリセリン脂肪酸エステルとは平均重合度2〜10のポリグリセリンと、炭素数12〜22の飽和又は不飽和の脂肪酸より選ばれた1種又は2種以上の脂肪酸とをエステル化して得られるポリグリセリン脂肪酸エステルである。ポリグリセリン脂肪酸エステルを構成する脂肪酸は、直鎖及び分岐の脂肪酸のいずれであっても良い。このようなポリグリセリン脂肪酸エステルとしては、モノイソステアリン酸ジグリセリル、ジイソステアリン酸ジグリセリル、テトライソステアリン酸ジグリセリル、モノイソステアリン酸テトラグリセリル、モノイソステアリン酸ヘキサグリセリル、セスキイソステアリン酸ヘキサグリセリル、モノイソステアリン酸デカグリセリル、ジイソステアリン酸デカグリセリル、モノラウリン酸テトラグリセリル、モノラウリン酸ヘキサグリセリル、モノラウリン酸デカグリセリル、モノミリスチン酸デカグリセリル、モノオレイン酸ジグリセリル、モノオレイン酸テトラグリセリル、モノオレイン酸ヘキサグリセリル、モノオレイン酸デカグリセリル、モノステアリン酸デカグリセリル、ジステアリン酸デカグリセリル、ペンタステアリン酸デカグリセリル等が挙げられ、これらの1種又は2種以上を使用する。
【0009】
本発明の透明化粧料組成物には、上記のポリグリセリン脂肪酸エステルを5.0〜20.0重量%、好ましくは10.0〜15.0重量%使用する。5.0重量%未満では、透明化粧料組成物は得られず、また、20.0重量%を超えて調製した透明化粧料組成物は、低温域及び高温域での安定性が悪くなる。
【0010】
本発明で使用する2価以上の多価アルコールとしては、1,3−ブチレングリコール、プロピレングリコール、ポリエチレングリコール等の2価の多価アルコールやグリセリン、ジグリセリン、ポリグリセリン、グルコース、フラクトース、ソルビトール、マルチトール、マンニトール等の3価以上の多価アルコールが挙げられ、これらの1種又は2種以上を使用する。これらの内、グリセリンが特に好ましい。
【0011】
本発明の透明化粧料組成物には、上記2価以上の多価アルコールを15.0〜40.0重量%、好ましくは20.0〜30.0重量%使用する。15.0重量%未満では、水と接した場合に瞬時にO/Wエマルションを形成することが困難となり乳化性能が不十分となる。また、40.0重量%を超えて調製した透明化粧料組成物は、低温域及び高温域での安定性が極めて悪くなる。
【0012】
また本発明の透明化粧料組成物には、水を0.01〜5.0重量%、好ましくは0.1〜3.0重量%使用する。0.1重量%未満で調製した透明化粧料組成物は、低温域及び高温域での安定性が極めて悪くなる。また、5.0重量%を超えて調製した場合も、低温域及び高温域での安定性が極めて悪くなる。
【0013】
本発明で使用する無機塩類としては、塩化ナトリウム、塩化カリウム、硫酸ナトリウム、硫酸マグネシウム、炭酸ナトリウム、炭酸水素ナトリウム、リン酸ナトリウム等が挙げられる。また有機塩類としては、クエン酸ナトリウム、リンゴ酸ナトリウム、グルコン酸ナトリウム、乳酸ナトリウム、コハク酸ナトリウム、酒石酸ナトリウム等が挙げられ、これらの一種又は二種以上を使用する。
【0014】
本発明の透明化粧料組成物に、無機塩類及び/又は有機塩類を0.001〜2.0重量%、好ましくは0.01〜1.0重量%を使用することにより、透明化粧料組成物と、水と接した場合に形成されるO/Wエマルション形成のスピードをより一層早くすることが可能となる。0.001重量%未満で調製した透明化粧料組成物は、無機塩類及び/又は有機塩類を配合しないものとの差がない。また、2.0重量%を超えて調製した透明化粧料組成物は、低温域及び高温域での安定性が悪くなる。
【0015】
本発明の透明化粧料組成物に配合する油分としては、特に限定はなく、例えば流動パラフィン、スクワラン等の炭化水素類、アジピン酸ジイソプロピル、ミリスチン酸オクチルドデシル、イソノナン酸イソノニル、ミリスチン酸イソプロピル、2−エチルヘキサン酸セチル等のエステル類、トリ2−エチルヘキサン酸グリセリル、トリ(カプリル・カプリン酸)グリセリル等のトリグリセライド類、オリブ油、ホホバ油、月見草油、ヤシ油等の植物油類、ジメチルポリシロキサン、メチルフェニルポリシロキサン、環状メチルポリシロキサン等のシリコーン類、オクチルドデカノール、オレイルアルコール等の高級アルコール等が挙げられ、これらの一種又は二種以上を使用する。
【0016】
更に、本発明の透明化粧料組成物は、発明の効果を損なわない範囲で通常の化粧料に使用される成分、例えば、各種ビタミン、アミノ酸、生薬、消炎剤、細胞賦活剤、色素、防腐剤、香料等を適宜配合することができる。
【0017】
本発明の透明化粧料組成物は、常法に従って製造することができ、例えば、ポリグリセリン脂肪酸エステルと多価アルコールとを混合溶解した界面活性剤相の撹拌下に、各油性成分を均一溶解した油相を徐々に添加し、その後無機塩類及び/又は有機塩類を溶解した水溶液を添加溶解していくことにより得ることができる。
【0018】
【実施例】
以下に実施例を挙げて本発明を具体的に説明するが、本発明はこれらに限定されるものではない。
【0019】
実施例1〜8、比較例1〜6
表1、2記載の組成物を調製し、以下の評価方法により評価した。その結果を表1、2に示す。
【0020】
(評価方法)
1)透明性
実施例、比較例で調製した組成物の状態を目視にて観察し、以下の評価基準を基に評価した。
◎:極めて良好な透明性を呈する
○:良好な透明性を呈する
△:少し濁る
×:白濁を呈する
2)乳化性能▲1▼
実施例、比較例で調製した組成物1.0gを、水1リットルに添加したときのO/Wエマルション形成のしやすさ、及び水への分散性能を目視にて観察し、以下の評価基準を基に評価した。
(評価基準)
◎:添加後、直ちに白濁し、極めて容易に分散する
○:添加後、直ちに白濁し、容易に分散する
△:添加後、白濁もしくは分散に撹拌が必要
×:添加後、白濁しない(油滴となって表面に浮く)
3)乳化性能▲2▼
上記評価で作成した、O/Wエマルションの経時安定性(12時間後及び24時間後の水面での油滴の有無)を以下の評価基準を基に評価した。
(評価基準)
◎:24時間以上放置後も油滴がない
○:12時間を超え、24時間以内に油滴が発生する
△:6時間を超え、12時間以内に油滴が発生する
×:6時間以内に油滴が発生する
4)安定性
実施例、比較例で調製した組成物を0℃、50℃の恒温槽に一ヵ月放置後の状態を目視にて観察し、以下の評価基準を基に評価した。
(評価基準)
○:状態変化なし
×:白濁、分離等の状態変化がある
【0021】
【表1】

Figure 0003653061
【0022】
【表2】
Figure 0003653061
【0023】
実施例1〜8に示した透明化粧料組成物は、全評価項目について十分なものであった。一方、比較例1〜6に示したものについては、評価項目のいずれかの項目で不十分な評価結果であった。
【0024】
Figure 0003653061
実施例9は、透明性、乳化性能▲1▼▲2▼及び安定性に優れたバスオイルであった。
【0025】
Figure 0003653061
実施例10は、透明性、メーク落ち、乳化性能▲1▼▲2▼(水洗性)及び安定性に優れたクレンジングオイルであった。
【0026】
【発明の効果】
本発明の透明化粧料組成物は、非イオン界面活性剤であるポリオキシアルキレン誘導体を含有せず、ポリグリセリン脂肪酸エステルをのみを用いた処方系のものであり、水と接した場合に瞬時にO/Wエマルションを形成する乳化性能が極めて良好で、且つ外観の透明性が良好で、低温域および高温域の両方において温度安定性が良好なものである。本発明の透明化粧料組成物は、バスオイル(入浴剤)、クレンジングオイル、シャンプー前の頭皮の洗浄料等に利用できるものである。[0001]
[Industrial application fields]
The present invention does not contain a polyoxyalkylene derivative that is a nonionic surfactant, and uses only a polyglycerin fatty acid ester, and has an extremely high emulsifying performance that instantly forms an O / W emulsion when in contact with water or warm water. The present invention relates to a transparent cosmetic composition having good appearance and transparent appearance, and having good temperature stability in both a low temperature range and a high temperature range. More specifically, bath oils such as bath oils that are added to the bath water to enhance the bathing effect, cosmetics such as cleansing oils that are particularly familiar with make-up and suitable for hard make-up, and scalp cleansing agents before shampooing It is related with the transparent cosmetics composition which shows favorable performance, such as toiletry products.
[0002]
[Prior art]
Polyglycerin fatty acid esters that are useful as surfactants for pharmaceuticals, cosmetics, and foods are obtained by esterifying fatty acids and polyglycerin. In general, polyglycerin in the mother nucleus is often obtained by condensation of glycerin. Thus, since the polyglycerin fatty acid ester uses glycerin as a starting material, there is little skin irritation and there is almost no problem in safety. It is. Because of this, for the purpose of improving safety more recently, the prescription system using polyglycerol fatty acid ester with excellent natural safety without using conventional petroleum-based polyoxyalkylene derivatives that are concerned about skin irritation Increasing cases are desired.
[0003]
However, polyglycerin fatty acid esters are required to form an O / W emulsion instantly when in contact with water or warm water by blending a small amount of a surfactant into the cosmetics field, particularly a system based on an oil component. Very rarely used as a surfactant in products such as bath oils such as bath oils, cleansing oils, etc., and generally polyoxyalkylene derivatives, specifically nonionic interfaces having polyoxyethylene chains In most cases, an activator was used. The reason is that the functions necessary for bath oil and cleansing oil, that is, the function of forming an O / W emulsion instantaneously when in contact with water, are insufficient, or the transparency of the appearance and the stability over time are insufficient. There were problems such as being bad. The inventor has previously found and proposed to solve the above problems (Japanese Patent Application No. 2002-063521). However, this instantly forms an O / W emulsion when in contact with water, but the emulsifying performance is insufficient, leaving room for improvement. For example, when bath oil is used by being poured into hot water in a bathtub, it becomes cloudy instantly and forms an O / W emulsion, but there is a problem that oil droplets are generated on the hot water over time. Also, when used in cosmetics such as cleansing oil and toiletry products such as scalp before shampooing, all of the oily ingredients that are blended are not emulsified and remain attached to the skin, scalp and hair. For this reason, there is a problem that an oily feeling is expressed and sensory discomfort occurs.
[0004]
[Problems to be solved by the invention]
Therefore, in view of the above circumstances, the present inventor does not contain a polyoxyalkylene derivative that is a nonionic surfactant, and in a prescription system using a polyglycerin fatty acid ester, functions necessary for bath oil and cleansing oil, that is, Transparent cosmetics with extremely good emulsifying performance that instantly forms an O / W emulsion when in contact with water, excellent appearance transparency, and excellent temperature stability over time in both low and high temperature ranges The object was to obtain a composition.
[0005]
[Means for solving problems]
As a result of intensive research to achieve the above-mentioned problems, the present inventors have found that a transparent cosmetic composition containing a specific polyglycerin fatty acid ester, a dihydric or higher polyhydric alcohol, and water can solve the above problems. As a result, the present invention has been completed.
[0006]
That is, the present invention includes the following components (A) to (C):
(A) Polyglycerol fatty acid obtained by esterifying polyglycerol having an average degree of polymerization of 2 to 10 and one or more fatty acids selected from saturated fatty acids having 12 to 22 carbon atoms and unsaturated fatty acids Esters 5.0-20.0% by weight
(B) Dihydric or higher polyhydric alcohol 15.0 to 40.0% by weight
(C) Water 0.01-5.0% by weight
And oil, it forms an O / W emulsion instantly when it comes into contact with water or warm water. It has very good emulsifying performance, has a good appearance transparency, and is stable over time in both low and high temperatures. The present invention relates to a transparent cosmetic composition having good properties.
[0007]
The polyoxyalkylene derivative which is a nonionic surfactant generally refers to a surfactant added with polyoxyethylene. For example, ethers such as polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene octyldodecyl ether, polyoxyethylene oleyl ether, polyoxyethylene hydrogenated castor oil, polyoxyethylene monostearate, polyoxyethylene Examples include esters such as ethylene oleate and polyoxyethylene isostearate, and polyoxyethylene / polyoxypropylene copolymers. In the present invention, a transparent cosmetic composition is obtained without using such a polyoxyalkylene derivative. Hereinafter, the present invention will be described in detail.
[0008]
The polyglycerin fatty acid ester used in the present invention is an esterification of polyglycerin having an average degree of polymerization of 2 to 10 and one or more fatty acids selected from saturated or unsaturated fatty acids having 12 to 22 carbon atoms. It is a polyglycerol fatty acid ester obtained. The fatty acid constituting the polyglycerin fatty acid ester may be either a linear or branched fatty acid. Examples of such polyglycerol fatty acid esters include diglyceryl monoisostearate, diglyceryl diisostearate, diglyceryl tetraisostearate, tetraglyceryl monoisostearate, hexaglyceryl monoisostearate, hexaglyceryl sesquiisostearate, decaglyceryl monoisostearate , Deisoglyceryl diisostearate, tetraglyceryl monolaurate, hexaglyceryl monolaurate, decaglyceryl monolaurate, decaglyceryl monomyristate, diglyceryl monooleate, tetraglyceryl monooleate, hexaglyceryl monooleate, decaglyceryl monooleate , Decaglyceryl monostearate, decaglyceryl distearate, pentastearic acid de Glyceryl and the like, to use one or more of these.
[0009]
In the transparent cosmetic composition of the present invention, the above-mentioned polyglycerin fatty acid ester is used in an amount of 5.0 to 20.0% by weight, preferably 10.0 to 15.0% by weight. If it is less than 5.0% by weight, a transparent cosmetic composition cannot be obtained, and a transparent cosmetic composition prepared in excess of 20.0% by weight has poor stability at low and high temperatures.
[0010]
Examples of the dihydric or higher polyhydric alcohol used in the present invention include divalent polyhydric alcohols such as 1,3-butylene glycol, propylene glycol, and polyethylene glycol, glycerin, diglycerin, polyglycerin, glucose, fructose, sorbitol, Examples include trihydric or higher polyhydric alcohols such as maltitol and mannitol, and one or more of these are used. Of these, glycerin is particularly preferred.
[0011]
In the transparent cosmetic composition of the present invention, the dihydric or higher polyhydric alcohol is used in an amount of 15.0 to 40.0% by weight, preferably 20.0 to 30.0% by weight. If it is less than 15.0% by weight, it is difficult to instantaneously form an O / W emulsion when in contact with water, and the emulsification performance becomes insufficient. Moreover, the transparent cosmetic composition prepared in excess of 40.0% by weight has extremely poor stability in the low temperature range and the high temperature range.
[0012]
In the transparent cosmetic composition of the present invention, water is used in an amount of 0.01 to 5.0% by weight, preferably 0.1 to 3.0% by weight. The transparent cosmetic composition prepared at less than 0.1% by weight has extremely poor stability at low and high temperatures. In addition, even when the content exceeds 5.0% by weight, the stability in the low temperature range and the high temperature range is extremely deteriorated.
[0013]
Examples of the inorganic salts used in the present invention include sodium chloride, potassium chloride, sodium sulfate, magnesium sulfate, sodium carbonate, sodium hydrogen carbonate, sodium phosphate and the like. Examples of organic salts include sodium citrate, sodium malate, sodium gluconate, sodium lactate, sodium succinate, sodium tartrate and the like, and one or more of these are used.
[0014]
By using 0.001 to 2.0% by weight, preferably 0.01 to 1.0% by weight, of an inorganic salt and / or an organic salt in the transparent cosmetic composition of the present invention, the transparent cosmetic composition And the speed of O / W emulsion formation formed when it contacts with water can be made still faster. The transparent cosmetic composition prepared at less than 0.001% by weight is not different from one not containing inorganic salts and / or organic salts. Moreover, the transparent cosmetic composition prepared in excess of 2.0% by weight has poor stability at low temperatures and high temperatures.
[0015]
The oil to be blended in the transparent cosmetic composition of the present invention is not particularly limited. For example, hydrocarbons such as liquid paraffin and squalane, diisopropyl adipate, octyldodecyl myristate, isononyl isononanoate, isopropyl myristate, 2- Esters such as cetyl ethylhexanoate, glyceryl tri-2-ethylhexanoate, triglycerides such as glyceryl tri (capryl / capric acid), vegetable oils such as olive oil, jojoba oil, evening primrose oil, coconut oil, dimethylpolysiloxane, Examples include silicones such as methylphenylpolysiloxane and cyclic methylpolysiloxane, higher alcohols such as octyldodecanol and oleyl alcohol, and one or more of these are used.
[0016]
Furthermore, the transparent cosmetic composition of the present invention is a component used in ordinary cosmetics within a range not impairing the effects of the invention, such as various vitamins, amino acids, herbal medicines, anti-inflammatory agents, cell activators, pigments, preservatives. A fragrance or the like can be appropriately blended.
[0017]
The transparent cosmetic composition of the present invention can be produced according to a conventional method. For example, each oil component is uniformly dissolved under stirring of a surfactant phase in which polyglycerin fatty acid ester and polyhydric alcohol are mixed and dissolved. It can be obtained by gradually adding an oil phase and then adding and dissolving an aqueous solution in which inorganic salts and / or organic salts are dissolved.
[0018]
【Example】
EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.
[0019]
Examples 1-8, Comparative Examples 1-6
The compositions described in Tables 1 and 2 were prepared and evaluated by the following evaluation methods. The results are shown in Tables 1 and 2.
[0020]
(Evaluation methods)
1) Transparency The states of the compositions prepared in Examples and Comparative Examples were visually observed and evaluated based on the following evaluation criteria.
A: Exhibits extremely good transparency O: Exhibits good transparency Δ: Slightly turbid ×: Exhibits white turbidity 2) Emulsification performance (1)
The following evaluation criteria were observed by visually observing the ease of forming an O / W emulsion and the ability to disperse in water when 1.0 g of the composition prepared in Examples and Comparative Examples was added to 1 liter of water. Based on the evaluation.
(Evaluation criteria)
◎: Immediately after addition, it becomes very cloudy and disperses very easily ○: Immediately after addition, it becomes cloudy immediately and disperses easily Δ: After addition, it becomes cloudy or requires stirring to disperse x: After addition, it does not become cloudy (with oil droplets) Float on the surface)
3) Emulsification performance (2)
The stability over time of the O / W emulsion prepared in the above evaluation (presence of oil droplets on the water surface after 12 hours and 24 hours) was evaluated based on the following evaluation criteria.
(Evaluation criteria)
◎: No oil droplets after standing for 24 hours or more ○: Over 12 hours, oil droplets are generated within 24 hours Δ: Over 6 hours, oil droplets are generated within 12 hours ×: Within 6 hours 4) Stability of oil droplets 4) Stability The composition prepared in Examples and Comparative Examples was visually observed for one month in a thermostatic bath at 0 ° C. and 50 ° C., and evaluated based on the following evaluation criteria. did.
(Evaluation criteria)
○: No change in state ×: Change in state such as cloudiness, separation, etc. [0021]
[Table 1]
Figure 0003653061
[0022]
[Table 2]
Figure 0003653061
[0023]
The transparent cosmetic compositions shown in Examples 1 to 8 were sufficient for all evaluation items. On the other hand, about what was shown to Comparative Examples 1-6, it was an inadequate evaluation result in any item of an evaluation item.
[0024]
Figure 0003653061
Example 9 was a bath oil excellent in transparency, emulsification performance (1), (2), and stability.
[0025]
Figure 0003653061
Example 10 was a cleansing oil excellent in transparency, make-up removal, emulsification performance (1) (2) (washability) and stability.
[0026]
【The invention's effect】
The transparent cosmetic composition of the present invention does not contain a polyoxyalkylene derivative that is a nonionic surfactant, is a prescription system using only a polyglycerin fatty acid ester, and instantly when in contact with water The emulsification performance for forming the O / W emulsion is very good, the appearance is transparent, and the temperature stability is good in both the low temperature range and the high temperature range. The transparent cosmetic composition of the present invention can be used for bath oil (bathing agent), cleansing oil, scalp before washing and the like.

Claims (1)

次の成分(A)〜(C):
(A)平均重合度が2〜10のポリグリセリンと、炭素数12〜22の飽和脂肪酸及び不飽和脂肪酸とをエステル化して得られる、ポリグリセリン脂肪酸エステル10.0〜15.0重量%
(B)2価以上の多価アルコール20.0〜30.0重量%
(C)水0.1〜3.0重量%
及び油分から成り、
無機塩類及び/又は有機塩類0.001〜2.0重量%を含有する
水や温水と接した場合にO/Wエマルションを形成するバスオイル(入浴剤)
The following components (A) to (C):
(A) 10.0-15.0% by weight of a polyglycerol fatty acid ester obtained by esterifying a polyglycerol having an average degree of polymerization of 2 to 10, a saturated fatty acid having 12 to 22 carbon atoms, and an unsaturated fatty acid.
(B) 20.0 to 30.0% by weight of a dihydric or higher polyhydric alcohol
(C) Water 0.1 to 3.0% by weight
And Ri consists of oil,
A bath oil (bath agent) that forms an O / W emulsion when in contact with water or warm water containing 0.001 to 2.0% by weight of inorganic salts and / or organic salts .
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JP5410650B2 (en) * 2005-06-13 2014-02-05 太陽化学株式会社 Cosmetic composition and cosmetics
JP4809052B2 (en) * 2005-12-22 2011-11-02 阪本薬品工業株式会社 Cleansing cosmetics
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