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Solid lip cosmetic

A technology of solid cosmetics and hydrogenated polyisobutylene, which is applied in the direction of cosmetics, cosmetics, cosmetic preparations, etc., can solve the problems of easy residue, difficult molding, and difficult separation of silicone oil, etc., and achieves the effect of excellent formability and expanded selection range

Active Publication Date: 2017-08-01
SHISEIDO CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In addition, hydrogenated polyisobutylene itself is a colorless and transparent oil with various viscosities depending on the degree of polymerization, but by mixing a large amount of high-viscosity hydrogenated polyisobutylene, the hydrogenated polyisobutylene layer of lipstick is easy to remain on the lips, and the makeup is durable get better
[0008] However, if the proportion of hydrogenated polyisobutylene is increased, the silicone oil will not be easily separated during application, and not only the effect of preventing secondary adhesion will be reduced, but it will also tend to be difficult to mold into a stick shape

Method used

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Embodiment

[0077] Examples are given below to further describe the present invention in detail, but the present invention is not limited by the examples. Unless otherwise specified, the compounding quantity is shown by mass %.

[0078] So far, the present inventors have found that (a) hydrogenated polyisobutylene and a large amount of (b), that is, one or two or more methyl phenyl groups that separate when mixed with (a) at 25° C. Solid lip cosmetics obtained by curing polysiloxane are excellent in preventing secondary adhesion.

[0079] That is, when applied on the lips, the component (b) with low viscosity and affinity with the lips is separated into the surface layer, and the component (a) is located in the inner layer (lip surface). Since the affinity between the coloring material and the component (a) is high, the coloring material is held in the inner layer. Therefore, when the lip cosmetics are attached to the cup, only the (b) component of the unmixed color material adheres to ...

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Abstract

[Problem] To provide a solid lip cosmetic which has an excellent effect of being prevented from secondary adhesion and also has excellent usability, long-lasting glossiness and stability. [Solution] A solid lip cosmetic characterized by comprising the following components: (a) 25 to 50% by mass of hydrogenated polyisobutene; (b) 20 to 70% by mass of at least one methylphenylsilicone component that can be separated from the component (a) when the component (b) is mixed with the component (a) at 25DEG C; (c) 1 to 20% by mass of neopentyl glycol dicaprate that serves as a compatibility modifier that can adjust the compatibility of the component (a) with the component (b); and (d) 3 to 12% by mass of a wax.

Description

[0001] related application [0002] This application claims the priority of Japanese Patent Application No. 2014-183612 filed on September 9, 2014, and incorporates it into the present invention. technical field [0003] The present invention relates to improvement of solid cosmetics for lips, in particular, solid cosmetics for lips that exhibit a secondary adhesion protective effect by layer separation during application. Background technique [0004] In the conventional lip cosmetics, after the lipstick is applied to the lips, the lipstick is transferred to a part in contact with the lips, such as a cup, and this secondary adhesion becomes a problem. On the other hand, lip cosmetics having a so-called anti-secondary adhesion effect which are less likely to cause secondary adhesion have been developed. [0005] For example, Patent Documents 1 to 3 disclose a solid cosmetic for lips, which uses hydrogenated polyisobutylene adhering to the lips and a silicone oil that has lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/31A61K8/37A61K8/891A61K8/92A61Q1/04
CPCA61K8/31A61K8/891A61K8/92A61K8/375A61Q1/06A61P1/04A61K8/8111A61K8/04A61K8/37A61K8/585A61K8/60A61K2800/43
Inventor 中野祐辅富田希子铃木寿美玲
Owner SHISEIDO CO LTD
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