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Milky cosmetic

A technology for cosmetics and white turbidity, applied in the directions of cosmetics, cosmetic preparations, cosmetic preparations, etc., can solve the problems of difficult emulsification, low compatibility, difficulty in white turbid cosmetics, etc., and achieve the effect of excellent stability over time

Active Publication Date: 2021-09-03
SHISEIDO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, in the method of limiting the types of oil components as described above, it may be difficult to mix high-level silicone oils, especially silicone oils with a high refractive index and a tendency to scatter visible light.
The reason is that silicone oil with a high refractive index is not only excellent in use but also has an excellent glossy effect on the skin, so it is expected to be highly blended in cosmetics, but its compatibility with other oils is generally low. Furthermore, (except for For active agents other than silicone-based surfactants) emulsification is not easy
[0010] In this way, it is very difficult to manufacture cloudy cosmetics (especially liquid cloudy cosmetics) mixed with a large amount of silicone oil with a high refractive index.

Method used

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Examples

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Effect test

Embodiment 1

[0123] In Example 1, compared with Comparative Examples 1 and 2, the total amount of ingredients (a) and (b) is the same, but only the ratio of the amount of ingredients is different. As shown in Table 1, the average emulsified particle size of the cosmetics was in the range of 0.1 to 0.5 μm, and the L value was less than 60, and the white turbidity occurred. However, the cosmetics of Example 1 ((b) / (a)=2.0) were very excellent in stability over time at room temperature and high temperature, whereas the cosmetics of Comparative Examples 1 and 2 ((b) / (a) =3.0, 5.0) are poor in stability over time at both room temperature and high temperature.

[0124] Therefore, it was shown that (c) 60% by mass of silicone oil having a refractive index of 1.40 or more is contained (in the oil component), and if (a) polyoxyethylene hydrogenated castor oil and (b) polyglycerin-2 diisohard When fatty acid ester is emulsified by combining (b) in the compounding quantity ratio with respect to (a) ...

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Abstract

Provided is a milky cosmetic that has excellent stability over time despite containing a large amount of a silicone oil having a high refractive index. The milky cosmetic contains (a) polyoxyethylene hydrogenated castor oil, (b) polyglyceryl-2 diisostearate, (c) a silicone oil having a refractive index of 1.40 or more, (d) an oil component other than the component (c), and (e) an aqueous phase. The blending ratio (blending quantity of (b) / blending quantity of (a)) of the component (b) to the component (a) is 1.5-2.5. The average emulsified particle size is within the range of 0.1-0.5 mum.

Description

[0001] related application [0002] This application claims priority from Japanese Patent Application No. 2019-013551 filed on January 29, 2019, which is incorporated herein. technical field [0003] The present invention relates to cloudy cosmetics, and more specifically, to liquid cloudy cosmetics that are excellent in temporal stability even if a large amount of silicone oil with a high refractive index is contained. Background technique [0004] In recent years, a preference for cosmetics (particularly liquid cloudy cosmetics) having a cloudy appearance has been strongly heard. It is considered that this is because the appearance like cloudy milk reminds people of the moisturizing feeling on the skin, the moist feeling, and furthermore, the whitening effect. [0005] Among the cloudy cosmetics, those made cloudy by dispersing micronized oil in the water phase and those made cloudy by compounding a polymer such as styrene / vinylpyrrolidone copolymer are known. These two ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/86A61K8/06A61K8/34A61K8/36A61K8/39A61K8/891A61Q19/00
CPCA61Q19/00A61K8/86A61K8/34A61K8/36A61K8/06A61K8/39A61K8/891
Inventor 富永直树井上东彦李石浅井步张阳
Owner SHISEIDO CO LTD
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