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Lecithin-containing cosmetic base material and cosmetic preparation in which same is blended

A technology of cosmetics and lecithin, which is applied in the field of cosmetic bases, can solve the problems of lecithin stability and usability, and achieve the effect of fast absorption and excellent stability

Pending Publication Date: 2021-08-24
SHISEIDO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stability and usability of lecithin in this prior art system cannot be said to be sufficient.

Method used

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  • Lecithin-containing cosmetic base material and cosmetic preparation in which same is blended
  • Lecithin-containing cosmetic base material and cosmetic preparation in which same is blended
  • Lecithin-containing cosmetic base material and cosmetic preparation in which same is blended

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Embodiment

[0079] The following examples are given to illustrate the present invention in more detail, but the present invention is not limited by these descriptions. In addition, unless otherwise stated, the compounding quantity shows mass %.

[0080] (A) Cosmetic base

[0081] A liposome dispersion (cosmetic base) containing a complex of lecithin and oryzanol was prepared according to the formulation shown in Table 1 below. Implement high-pressure emulsification (2 times) at 100Mpa·s during preparation. The liposome particle size distribution of the obtained liposome dispersion was measured.

[0082] [Table 1]

[0083]

[0084] (*)Phytopresome OR

[0085] As shown in Table 1, when the ratio of the compounded amount of the liposome constituent (hydrogenated lecithin-oryzanol complex) to the compounded amount of the aqueous medium (including water + polyol) is in the range of 1:99 to 1:32 , to obtain a liposome dispersion (base) whose mode particle diameter is below 100nm and whose...

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Abstract

The purpose of the present invention is to provide: a cosmetic base material which is capable of stably retaining lecithin in the form of a liposome; and a cosmetic preparation which contains this base material and has excellent usability (such as soft texture when applied to the skin and quick adhesion to the skin) and excellent stability. The present invention relates to: a cosmetic base material which is characterized by containing (a) a liposome that contains (a-1) lecithin and (a-2) an oryzanol, and (b) an aqueous medium that contains (b-1) water and (b-2) a polyhydric alcohol, and which is also characterized in that the ratio of the blending amount of the liposome (a) to the blending amount of the aqueous medium (b), namely (a):(b) is within the range of from 1:99 to 1:32; and a cosmetic preparation which contains a microemulsion part and a liposome part that is composed of this base material.

Description

technical field [0001] The present invention relates to cosmetic bases containing lecithin. More specifically, it relates to a cosmetic base in which lecithin is stably blended in the form of liposomes; Excellent cosmetic. Background technique [0002] It is known that lecithin has an excellent water retention effect, maintains healthy skin, and improves skin roughness (for example, Patent Document 1). Phospholipids, which are the main components of lecithin, are components of biofilms, and have good affinity with skin and are highly safe. However, when lecithin is blended into low-viscosity cosmetics such as lotion, precipitation tends to occur, and various attempts have been made to stably disperse lecithin. [0003] Patent Document 2 discloses a transparent or translucent cosmetic comprising (a) a hydrogenated phospholipid having a phosphatidylcholine content of 60% by mass or more; (b) 1 selected from branched higher fatty acids and higher alcohols. (c) polyhydric al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61Q1/00A61Q19/00A61K8/14A61K8/34A61K8/55A61K8/63
CPCA61Q19/00A61K8/63A61K8/14A61K8/553A61K8/345A61K8/068A61K2800/48A61Q19/007A61Q19/02
Inventor 家谷沙织
Owner SHISEIDO CO LTD