Powder composition as well as preparation method and application thereof

By combining physical coating of nano-metal oxides, clay, and boron nitride with chemical coating of polydimethylsiloxane alcohol, a stable powder composition is constructed, which solves the problem of pigment oxidation in color cosmetics under high temperature and high humidity conditions, and improves color stability and makeup longevity.

CN121587992APending Publication Date: 2026-03-03MEISHANG(GZ)COSMETICS CO LTD
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Patent Information

Application Number
CN202511947750.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-23
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

Existing color cosmetics are prone to oxidation, darkening, fading, and color shifting of pigments under high temperature, high humidity, or prolonged makeup conditions, leading to decreased product stability and making it difficult to meet the technical requirements for color longevity.

Method used

A dense core protective layer is formed by physically coating pigments with nano-metal oxides, clay, and boron nitride. Subsequently, polydimethylsiloxane alcohol is used for chemical coating to form stable Si-OM covalent bonds, thus constructing a synergistic protection system of physical core and chemical shell.

Benefits of technology

It significantly improves the lightfastness, heat resistance, and antioxidant capacity of powders, while maintaining excellent spreadability, skin adhesion, and makeup-holding effect, thus improving the color stability and user experience of color cosmetics.

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Abstract

The invention relates to the technical field of cosmetics, in particular to a powder composition and a preparation method and application thereof, and the key point of the technical scheme is that the preparation method comprises the following steps: S1, mixing a surface treating agent with isopropanol, and uniformly stirring to obtain a mixed solution; s2, uniformly mixing nano metal oxide, clay, boron nitride, toner and isopropyl alcohol, and enabling the nano metal oxide, the clay and the boron nitride to form a primary coating layer on the surface of the toner, so as to obtain a pasty mixture; s3, fully mixing and grinding the mixed solution and the paste mixture to enable the surface treating agent to be attached to the surface of the primary coating layer to form outer coating, and then drying and crushing to obtain a powder composition; wherein the surface treating agent is one or more of polydimethylsiloxane and polydimethylsiloxane alcohol. According to the invention, a double structure of inner layer physical coating and outer layer chemical coating is constructed, so that high stability of the toner is realized, and meanwhile, the ductility, the skin fitting property and the makeup keeping effect of the toner are improved.
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