JP3469106B2 - Oily cosmetics - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oily cosmetic containing a water-soluble polyhydric alcohol, an oil-soluble monohydric alcohol, and a specific glucopyranoside derivative. The present invention relates to an oil-based cosmetic which is less sticky and uncomfortable to the skin, has a moisturizing effect for preventing dryness of the skin, its durability, and an excellent effect for improving rough skin. [0002] Oily cosmetics generally have excellent adhesion to the skin and long-lasting properties, but have the drawback that they have a strong oily feeling when used and tend to give a sticky feeling and an uncomfortable feeling. In order to solve the drawback, attempts have conventionally been made to mix a large amount of a liquid oily material having a low oiliness such as silicone oil or low molecular weight liquid paraffin, or to mix water or a water-soluble polyhydric alcohol by an emulsification technique. I have. However, in the method of blending a large amount of oily raw materials having a low oily feeling, stickiness and discomfort to the skin are only slightly reduced, and the defects are not eliminated, and the quality is not satisfactory at all. Also,
By mixing water and water-soluble polyhydric alcohol by emulsification technology, stickiness and uncomfortable feeling to the skin are considerably reduced, but in the case of emulsification, it is practically essential to add a surfactant to increase the stability of the product This has another problem that the surfactant sometimes irritates the skin and induces rough skin. Furthermore, even when a surfactant is blended, the stability to light and heat is not sufficient,
Considerable consideration is required for long-term storage, and there is a problem that restrictions on formulation development arise. On the other hand, the present inventors have proposed that the above problems can be solved by blending a specific water-soluble polyhydric alcohol and an oil-soluble monohydric alcohol (Japanese Patent Laid-Open No. 6-239731). ). Thereby, the effect of reducing the sensory qualities of the conventional oil-based cosmetics and preventing the skin from drying can be obtained, that is, an oil-based cosmetic having an effect of preventing skin roughness can be obtained. It did not have it and was still unsatisfactory as an oily cosmetic. DISCLOSURE OF THE INVENTION [0004] The present invention has less oily cosmetics conventionally having stickiness and discomfort to the skin, and has excellent moisturizing effect for preventing dryness of the skin, its persistence, and improvement effect for rough skin. The purpose is to provide oily cosmetics. Means for Solving the Problems The inventors of the present invention have conducted intensive studies in view of the above circumstances, and as a result, have found that they contain a water-soluble polyhydric alcohol, an oil-soluble monohydric alcohol, and a specific glucopyranoside derivative. The present inventors have found that an oil-based cosmetic that solves the above-mentioned problems has led to the completion of the present invention. That is, the present invention provides the following component (A):
(B) and (C); (A) 0.1 to 50% by weight of a water-soluble polyhydric alcohol, (B) 0.1 to 50% by weight of an oil-soluble monohydric alcohol, (C) the following general formula [Chemical formula 2] (Wherein, R is an alkyl group having 2 to 8 carbon atoms).
Oil-based cosmetics containing up to 5% by weight (however,
And does not contain water) . DETAILED DESCRIPTION OF THE INVENTION The component (A) used in the present invention may be any water-soluble polyhydric alcohol as long as it is commonly used in cosmetics. For example, 1,3-butylene glycol And glycols such as dipropylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, hexylene glycol, and triethylene glycol. These water-soluble polyhydric alcohols may be used alone or in combination of two or more. The water-soluble polyhydric alcohol is incorporated in the oily cosmetic of the present invention in an amount of 0.1 to 50% by weight. If the amount is less than 0.1% by weight, the effect of the present invention may not be sufficiently obtained. On the other hand, if the amount exceeds 50% by weight, the stability of the obtained oily cosmetic may deteriorate, which is not preferable. . [0008] The oil-soluble monohydric alcohol of component (B) used in the present invention can be any of those commonly used in cosmetics, such as cetanol, lauryl alcohol, stearyl alcohol, oleyl alcohol, and cetostearyl. Alcohol, 2-hexyldecanol, 2-octyldodecanol, behenyl alcohol,
Higher aliphatic alcohols such as jojoba alcohol are exemplified. These oil-soluble monohydric alcohols may be used alone or in combination of two or more. The oil-soluble monohydric alcohol is used in the oil-based cosmetic of the present invention in an amount of 0.1.
1 to 50% by weight is blended. If the amount is less than 0.1% by weight, the sufficient effect of the present invention may not be obtained. On the other hand, if the amount is more than 50% by weight, the cosmetic durability of the obtained oily cosmetic may deteriorate, which is preferable. Absent. The glucopyranoside derivative of the component (C) used in the present invention is a known substance which is present in a very small amount in brewed sake, and its synthesis method has been reported in many reports (for example, Rocznikikim, Vol. 49, No. 12).
No. 2113-2115, 1975), and according to this method, it is inexpensive and easily available. Specific examples of the glucopyranoside derivatives include ethyl glucoside, propyl glucoside, butyl glucoside, isobutyl glucoside, pentyl glucoside, 3-methylbutyl glucoside, hexyl glucoside, methyl pentyl glucoside, heptyl glucoside, 4-methylhexyl glucoside, and 5-methylhexyl glucoside. , 4-ethylpentyl glucoside, octyl glucoside, 6-methylheptyl glucoside, 5-methylheptyl glucoside,
5,5-dimethylhexylglucoside and the like.
These glucopyranosides can be used in both α-form and β-form. [0010] One of these glucopyranosides may be used alone, or two or more thereof may be used in combination. The glucopyranoside derivative is incorporated in the oily cosmetic of the present invention in an amount of 0.01 to 5% by weight. The amount is 0.01
If the amount is less than 5% by weight, the effect of the present invention may not be sufficiently obtained. On the other hand, if the amount exceeds 5% by weight, the stability and feel of the resulting oily cosmetic may be unfavorably deteriorated. Further, the component (B) is 0.5 to 0.5% of the component (A).
10 times the amount (weight), component (C) is relative to component (A)
It is preferable to mix it in an amount of 0.01 to 2 times (weight) from the viewpoint of the effect of the present invention and the stability of the obtained oily cosmetic. The oily cosmetic of the present invention contains, in addition to the above essential components, powders, surfactants, antioxidants, polymer compounds, and the like generally used in cosmetics as long as the effects of the present invention are not impaired. Perfumes, preservatives, ultraviolet absorbers, humectants and the like can be added. The oily cosmetic of the present invention can be in various forms such as cosmetic oil, foundation, lipstick, eyeshadow, blusher and the like. EXAMPLES The present invention will be described in more detail with reference to the following examples. Prior to this, evaluation items and methods will be described in detail. The present invention is not limited by these. All amounts are by weight. (Sensory Evaluation Test) Twenty female panelists aged 20 to 50 years old were allowed to use the sample in a blind, and they were "sticky", "uncomfortable to the coated part", "moist feeling at the time of coating", and "coated 2". The "permanence of moist feeling after time" was evaluated according to the criteria of each evaluation, and the average score of 20 persons was used as the evaluation result. Evaluation criteria for "stickiness" and "uncomfortable feeling to coating part" 5 points: not 4 points: not so much 3 points: neither of them 2 points: a little 1 point: a certain "moist at the time of coating" Evaluation criteria of "feel" and "moist feeling 2 hours after application" 5 points: 4 points: Somewhat 3 points: Neither can be 2 points: Not so much 1 point: No (Test for effect of prevention and improvement of rough skin) 1) The effect of continuous application for one week was examined on 10 female panelists aged 20 to 50 years old who showed rough skin symptoms during the dry season in winter.
That is, the sample was applied twice a day (morning and evening), the state of the applied part before and after the start of the test was observed, scored according to the following, and the average score of 10 persons was used as the evaluation result. 5 points: roughness is clearly improved 4 points: slight improvement of roughness 3 points: no change 2 points: slightly deteriorated 1 point: deteriorated Examples 1 and 2 and Comparative Examples 1 and 2 2 <Oil-based lotion> The oil-based lotion shown in Table 1 was prepared, and the evaluation test was performed on the obtained sample. Table 1 also shows the results. [Table 1] As apparent from Table 1, the oily lotion of the present invention was excellent in organoleptic properties, and was also excellent in the effects of preventing and improving rough skin. Examples 3 and 4 and Comparative Examples 3 and 4 <Oil-based foundation> An oil-based foundation shown in Table 2 was prepared, poured into a metal dish, cooled and solidified, and an evaluation test was performed on the obtained sample. Table 2 also shows the results. [Table 2] As is clear from Table 2, the oily foundation of the present invention was excellent in organoleptic properties, and also excellent in preventing and improving rough skin. Example 5 and Comparative Example 5 <Stick Lipstick> An evaluation test was performed on a sample obtained by preparing a stick lipstick shown in Table 3 and cooling and solidifying the stick lipstick. Table 3 also shows the results. [Table 3] As is clear from the results shown in Table 3, the stick-like lipstick of the present invention was excellent in organoleptic properties and excellent in prevention and improvement of lip roughening. Example 6 and Comparative Example 6 <Pour-in lipstick> A lipstick shown in Table 4 was prepared by a conventional method, poured into a resin pot, cooled and solidified, and an evaluation test was performed. Table 4 also shows the results. [Table 4] As is evident from the results in Table 4, the cast lipstick of the present invention was excellent in organoleptic properties and excellent in prevention and improvement of rough lips. Example 7 and Comparative Example 7 Stick Eyeshadow A stick eyeshadow shown in Table 5 was prepared by a conventional method, and an evaluation test was performed on a sample obtained by cooling and solidifying into a rod shape. Table 5 also shows the results. [Table 5] As is clear from the results shown in Table 5, the stick-shaped eyeshadow of the present invention was excellent in sensory characteristics and excellent in the effects of preventing and improving rough skin. [0033] As described above, the present invention provides the oily cosmetics with a less sticky or uncomfortable feeling to the skin, a moisturizing effect for preventing dryness of the skin, a long-lasting effect, and an effect for improving rough skin. It is clear that it provides an excellent oily cosmetic.

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Claims (1)

(57) [Claims] (1) The following components (A), (B) and (C); (A) 0.1 to 50% by weight of a water-soluble polyhydric alcohol, and (B) oil solubility. 0.1 to 50% by weight of a monohydric alcohol, (C) the following general formula: (Wherein, R is an alkyl group having 2 to 8 carbon atoms).
Oil-based cosmetics (but not including water).
No) .