JP2005213237A - Transparent liquid cleansing cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new, liquid-oil-based, oily transparent liquid cleansing cosmetic which is prepared by using a polyglycerin fatty acid ester without using a petroleum-derived polyoxyalkylene derivative, has a transparent outward appearance, and is excellent in functional characteristics so that excellent cleansing effect is shown even when the hand or face being wet with water and water washability at the time of washing off is very good. <P>SOLUTION: The transparent liquid cleansing cosmetic comprises (A) 3.0-30.0 wt.% polyglycerin fatty acid ester having an HLB of 10.0 or higher and prepared by esterifying polyglycerin having an average degree of polymerization of 3 or higher with a 8-22C fatty acid, (B) 1.0-15.0 wt.% (in terms of solid content) component consisting of an alkyl glucoside having a 6-18C alkyl group and/or a maltitol hydroxyalkyl ether, and (C) 0.1-10.0 wt.% oil which is liquid at room temperature and has a hydratability and an at least 8C alkyl group. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention uses a polyglycerin fatty acid ester without using a petroleum-based polyoxyalkylene derivative, thereby providing an excellent cleansing effect even when the appearance is transparent and the hands and face are wet with water. The present invention relates to a novel oily transparent liquid cleansing cosmetic based on a liquid oil, which has an excellent effect on sensory characteristics, which is exhibited and also has a very good washability when washed off.

  Conventionally, cleansing cosmetics have been used for the purpose of removing makeup cosmetics. Cleansing cosmetics mainly use the dissolving action of makeup cosmetics due to surfactants and oils, and are generally in the form of lotions, emulsions, creams and oils. Among them, cleansing oil, which is an oily transparent liquid cleansing cosmetic based on liquid oil, is well known to make-up cosmetics such as lipsticks and foundations, and is recognized as a product with a high cleansing effect. . Also, recent makeup cosmetics have improved cosmetic durability, and lotion-like, emulsion, and cream-like cleansing cosmetics do not provide a satisfactory makeup cosmetic removal effect. There was a thing. For this reason, the number of cases in which oil-like transparent liquid cleansing cosmetics having a high cleansing effect are used is increasing, and the contents relating to these have been reported. For example, Patent Document 1 contains a non-aqueous liquid cleansing cosmetic that obtains nonionic surfactant and liquid oil as essential components, and Patent Document 2 contains a specific nonionic surfactant, water, and liquid oil. Liquid cleansing cosmetics have been proposed. These liquid cleansing cosmetics have good compatibility with the makeup cosmetics as described above and have a high cleansing effect. However, these liquid cleansing cosmetics have a problem that when the hands and face are wet with water, the familiarity with the makeup cosmetics is extremely poor and the intended cleansing effect cannot be exhibited. For this reason, it has been essential to blend in with makeup cosmetics while the hands and face are always dry, and its usage has been limited. Furthermore, the washability at the time of washing off is poor, the oily feeling is generated on the skin after use, and the refreshing feeling after use is lacking. I had to wash my face. In addition, when used for makeup cosmetics with good makeup, which are often used recently, the oily feeling after washing with water has become stronger, and there has been a problem on the sensory aspect such as stickiness of the skin.

Patent Document 3 reports a transparent and liquid cleansing cosmetic that solves these problems. In this cleansing cosmetic report, various nonionic surfactants are described, but only examples of formulations using only petroleum-based polyoxyalkylene surfactants are described in the examples. . For example, polyoxyethylene alkyl ether, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester and the like are shown. However, these oil-based polyoxyalkylene surfactants have recently been feared for skin irritation and are often avoided for the purpose of improving safety. However, an increasing number of cases are desired where a prescription system using a naturally derived surfactant having excellent safety is desired. For example, the polyglycerol fatty acid ester obtained by esterifying the fatty acid and polyglycerol which are useful as surfactant of a pharmaceutical, cosmetics, and foodstuffs is mentioned. Polyglycerin, the starting material for the polyglycerin fatty acid ester, has been obtained by dehydrating condensation of highly safe glycerin. Polyglycerin fatty acid ester is recognized as a safe surfactant with little skin irritation. Has been. Therefore, in a prescription system using a polyglyceryl fatty acid ester without using a petroleum-based polyoxyalkylene derivative, a transparent liquid cleansing cosmetic that overcomes the above problems, that is, when the hands and face are wet with water. However, there has been a demand for the development of a transparent liquid cleansing cosmetic that exhibits an excellent cleansing effect and has an excellent sensory characteristic that is very good in washing with water.
JP 11-246354 A JP 2002-255738 A Japanese Patent Laid-Open No. 2001-270809

  The problem to be solved by the present invention is the case where the appearance is transparent and the hands and face are wet with water by using polyglycerin fatty acid esters without using petroleum-based polyoxyalkylene derivatives. Provides a new oily transparent liquid cleansing cosmetic based on a liquid oil that has an excellent cleansing effect and also has an excellent sensory characteristic with excellent water washability when washed off. That is.

As a result of intensive studies to solve the above problems, the present inventors have found that a transparent liquid cleansing cosmetic containing a specific polyglycerin fatty acid ester, an alkyl glucoside and / or maltitol hydroxyalkyl ether, and an oil having a water-holding property. The present inventors have found that the above problems can be solved, and have completed the present invention. That is, the present invention includes the following components (A) to (C):
(A) 3.0 to 30.0% by weight of a polyglycerol fatty acid ester obtained by esterifying a polyglycerol having an average degree of polymerization of 3 or more and a fatty acid having 8 to 22 carbon atoms and having an HLB of 10.0 or more.
(B) The alkyl glucoside and / or maltitol hydroxyalkyl ether having an alkyl group having 6 to 18 carbon atoms is 1.0 to 15.0% by weight in terms of solid content.
(C) Oils having an alkyl group having 8 or more carbon atoms that are liquid at room temperature and have water repellency 0.1 to 10.0% by weight
The present invention relates to a transparent liquid cleansing cosmetic containing

  In the transparent liquid cleansing cosmetic of the present invention, the appearance is transparent and the hands and face are wet with water by using a polyglycerol fatty acid ester without using a petroleum-based polyoxyalkylene derivative. In addition, it exhibits an excellent cleansing effect, and also has an excellent sensory characteristic that is very good in washing with water, that is, a novel transparent liquid cleansing cosmetic that solves the conventional problems can be obtained. it can.

  The present invention is described in detail below.

  The polyglycerin fatty acid ester used in the present invention is a polyglycerin fatty acid ester obtained by esterifying polyglycerin having an average degree of polymerization of 3 or more and a fatty acid having 8 to 22 carbon atoms and having an HLB of 10.0 or more. is there. Examples of the fatty acid constituting the polyglycerin fatty acid ester include one or more selected from linear and branched saturated and unsaturated. Examples of such polyglycerin fatty acid esters include triglyceryl monocaprate, tetraglyceryl monolaurate, hexaglyceryl monolaurate, decaglyceryl monolaurate, decaglyceryl dilaurate, hexaglyceryl monomyristate, decaglyceryl monomyristate, Decaglyceryl myristate, decaglyceryl monopalmitate, decaglyceryl monostearate, decaglyceryl distearate, hexaglyceryl monooleate, decaglyceryl monooleate, decaglyceryl dioleate, decaglyceryl monoisostearate, decaglyceryl diisostearate, Mono (isostearic acid / oleic acid) decaglyceryl, di (lauric acid / oleic acid) decaglyceryl, mono (caprin) / Isostearate) hexaglyceryl and the like, to use one or more of these. Of these, polyglycerol fatty acid esters having an HLB of 12 or more are particularly preferred. For example, decaglyceryl monooleate, decaglyceryl dioleate, decaglyceryl monoisostearate, decaglyceryl diisostearate, and the like. Moreover, it is also possible to use together the polyglycerol fatty acid ester less than 10.0, and the polyglycerol fatty acid ester exceeding HLB10.0 suitably in the ratio used as HLB10.0 or more.

  In the transparent liquid cleansing cosmetic of the present invention, the above-mentioned polyglycerin fatty acid ester is used in an amount of 3.0 to 30.0% by weight, preferably 10.0 to 20.0% by weight. If it is less than 3.0% by weight, a transparent liquid cleansing cosmetic cannot be obtained, and the transparent liquid cleansing cosmetic used in excess of 30.0% by weight thickens in the low temperature range or has two layers in the high temperature range. The temperature stability deteriorates, such as separation. Further, when it comes into contact with water, an O / W emulsion cannot be formed instantaneously, the washing performance at the time of rinsing is deteriorated and the desired performance cannot be obtained, which is not preferable in terms of functionality.

  Examples of the alkyl glucoside used in the present invention include 40 to 60% by weight aqueous solutions of octyl glucoside, nonyl glucoside, decyl glucoside, dodecyl glucoside, lauryl glucoside, myristyl glucoside, palmityl glucoside, and the like. use. Among these, a lauryl glucoside aqueous solution is particularly preferable.

  In addition, as maltitol hydroxyalkyl ether, maltitol hydroxyoctyl ether, maltitol hydroxylauryl ether, maltitol hydroxymyristyl ether, maltitol hydroxypalmityl ether, maltitol hydroxystearyl ether, maltitol hydroxyisostearyl ether, maltitol 40-60 weight% aqueous solution, such as a hydroxy oleyl ether, is mentioned, These 1 type (s) or 2 or more types are used. Among these, a maltitol hydroxylauryl ether aqueous solution is particularly preferable.

  In the transparent liquid cleansing cosmetic of the present invention, the above alkyl glucoside and / or maltitol hydroxyalkyl ether is used in an amount of 1.0 to 15.0% by weight, preferably 2.0 to 7.0% by weight in terms of solid content. To do. Transparent liquid cleansing cosmetics prepared at less than 1.0% by weight cannot exhibit an excellent cleansing effect for use when the hands and face are wet with water. In addition, transparent liquid cleansing cosmetics used in excess of 15.0% by weight have problems in terms of temperature stability, such as separation of two layers in a low temperature range, and are not familiar with makeup cosmetics. Can not get.

  Examples of oils having an alkyl group having 8 or more carbon atoms that are liquid at room temperature and used in the present invention include isostearic acid, isopalmitic acid, oleic acid, palmitoleic acid, linoleic acid, ricinoleic acid, etc. Fatty acids, hexyl decanol, isostearyl alcohol, octyldodecanol, higher alcohols such as oleyl alcohol, and ester oils such as octyldodecyl lactate and diisostearyl malate, and one or more of these are used. . Of these, fatty acids and higher alcohols are particularly preferred.

  The transparent liquid cleansing cosmetic of the present invention contains 0.1 to 10.0% by weight, preferably 0.1% by weight, of the oil having an alkyl group having 8 or more carbon atoms that is liquid at room temperature and has water repellency. Use 5 to 5.0% by weight. Transparent liquid cleansing cosmetics prepared at less than 0.1% by weight cannot exhibit an excellent cleansing effect for use when the hands and face are wet with water. In addition, the transparent liquid cleansing cosmetic used in excess of 10.0% by weight is not preferable in terms of functionality due to lack of a refreshing feeling after use because the oiled agent remains on the skin even after being washed away with water. .

  The oil to be blended in the transparent liquid cleansing cosmetic composition of the present invention is not particularly limited. For example, hydrocarbons such as liquid paraffin and squalane, octyldodecyl myristate, isononyl isononanoate, isopropyl myristate, and the like, trioctane Triglycerides such as glyceryl acid, tri (caprylic / capric acid) glyceryl, vegetable oils such as olive oil, jojoba oil, evening primrose oil, coconut oil, silicones such as dimethylpolysiloxane, methylphenylpolysiloxane, and cyclic methylpolysiloxane 1 type or 2 types or more of these are used.

  Furthermore, the transparent liquid cleansing cosmetic of the present invention is a component used in ordinary cleansing cosmetics within a range that does not impair the effects of the invention, for example, polyols such as glycerin and diglycerin, sugar alcohols, various vitamins, amino acids, herbal medicines In addition, anti-inflammatory agents, cell activators, pigments, preservatives, fragrances and the like can be appropriately blended.

  The transparent liquid cleansing cosmetic of the present invention can be produced according to a conventional method, for example, with stirring of a surfactant phase in which polyglycerin fatty acid ester and alkyl glucoside and / or maltitol hydroxyalkyl ether are mixed and dissolved. It can be obtained by gradually adding and dissolving an oil component containing an oil having an alkyl group having 8 or more carbon atoms that is liquid at room temperature and has water repellency.

EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention concretely, the scope of the present invention is not limited by these Examples.
<Examples 1-5, Comparative Examples 1-7>
Cleansing cosmetics described in Tables 1 and 2 were prepared and evaluated by the following evaluation methods. The results are shown in Tables 1 and 2.

(Evaluation methods)
1) Transparency The appearance of the liquid cleansing cosmetic prepared in Examples and Comparative Examples was visually observed and evaluated based on the following evaluation criteria.
○: Good transparency △: Some turbidity ×: White turbidity 2) Feeling of use 20 healthy female panelists used a foundation and lipstick with good makeup and 30 minutes after application, hands and face Cleansing operation was carried out for about 20 seconds using 1.0 g of the cleansing cosmetic prepared in Examples and Comparative Examples after being sufficiently wetted with water, and washed off with water. At that time, each item of “Massage”, “Ease of familiarization with makeup”, “Ease of rinsing with water”, “Feeling of washing up” and “Efficacy of makeup removal” was scored out of 100 points, and the average From the point, it evaluated according to the following criteria.
(Evaluation criteria)
Evaluation average evaluation
Good: 75 points or more: ◎
Slightly good: 50 points or more and less than 75 points: ○
Slightly poor: 25 points or more and less than 50 points: △
Bad: Less than 25 points: ×
3) Stability The cleansing cosmetics prepared in Examples and Comparative Examples were visually observed for 1 month in a thermostatic bath at 0 ° C. and 50 ° C., and evaluated based on the following evaluation criteria.
(Evaluation criteria)
○: No change in state ×: Change in state such as cloudiness, separation and thickening

  The transparent liquid cleansing cosmetics shown in Examples 1 to 5 were sufficient for all evaluation items. On the other hand, the cleansing cosmetics shown in Comparative Examples 1 to 7 were insufficient evaluation results in any of the evaluation items.

In the transparent liquid cleansing cosmetic of the present invention, the appearance is transparent and the hands and face are wet with water by using a polyglycerol fatty acid ester without using a petroleum-based polyoxyalkylene derivative. In addition, it has an excellent cleansing effect, and also has an excellent sensory property that is very good when washed away, that is, it is used for the development of a new transparent liquid cleansing cosmetic that solves the conventional problems. Is possible.

Claims (1)

The following components (A) to (C):
(A) 3.0 to 30.0% by weight of a polyglycerol fatty acid ester obtained by esterifying a polyglycerol having an average degree of polymerization of 3 or more and a fatty acid having 8 to 22 carbon atoms and having an HLB of 10.0 or more.
(B) The alkyl glucoside and / or maltitol hydroxyalkyl ether having an alkyl group having 6 to 18 carbon atoms is 1.0 to 15.0% by weight in terms of solid content.
(C) Oils having an alkyl group having 8 or more carbon atoms that are liquid at room temperature and have water repellency 0.1 to 10.0% by weight
Transparent liquid cleansing cosmetic containing