Water-in-oil emulsion cosmetics

A water-in-oil emulsion cosmetic formulation with fine particle metal oxides, amino acids, and crosslinked organosilicon resin enhances dispersibility and prevents makeup smearing, maintaining a long-lasting effect even in high-temperature, high-humidity conditions.

JP7763935B2Active Publication Date: 2025-11-04KOSE CORPORATION
8 Cites 0 Cited by

Patent Information

Application Number
JP2024514354
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-12-05
Filing Date
2023-11-28
Publication Date
2025-11-04
Estimated Expiration
2043-11-28

AI Technical Summary

Technical Problem

Water-in-oil emulsion cosmetics face challenges in maintaining cosmetic wear under high-temperature, high-humidity conditions, such as when wearing a mask, due to decreased powder dispersibility and increased makeup smearing, leading to non-uniformity and adhesion to the mask.

Method used

Incorporation of specific ingredients including fine particle metal oxides, hydroxyapatite, amino acids, crosslinked organosilicon resin, and spherical powders into the cosmetic formulation to enhance dispersibility and prevent makeup smearing, while maintaining a long-lasting pore-covering effect and avoiding a dry feeling.

Benefits of technology

The formulation achieves excellent powder dispersibility and resistance to makeup smearing in high-temperature, high-humidity environments, with minimal transfer to masks and no dry feeling, ensuring a sustained cosmetic effect.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The purpose is to provide a water-in-oil emulsion cosmetic that has excellent dispersibility of solidified sebum powder in a liquid phase and that will not come off easily even in a hot, humid environment, such as when wearing a mask. The water-in-oil emulsion cosmetic contains the following components (A) to (D): (A) at least one selected from the group consisting of fine metal oxide particles, hydroxyapatite, and composite powders containing metal oxide and hydroxyapatite, (B) at least one selected from the group consisting of amino acids and salts thereof, (C) a crosslinked organic silicon resin represented by average composition formula (1), and (D) a spherical powder having an average particle size of 5-50 μm, the content of the component (A) in the cosmetic being 3 mass% or more.
Need to check novelty before this filing date? Find Prior Art