Multiple efficacy complex microsphere for cosmetics and preparation method thereof

Abstract

The invention discloses a multifunctional composite microsphere for cosmetics and a preparation method thereof. The multifunctional composite microsphere for cosmetics is a porous inorganic / polymer composite microsphere formed by using polymer porous microspheres as mother particles and nano-inorganic particles as daughter particles, and the daughter particles are evenly dispersed and bonded to the surface of the mother particle. During preparation, polymer porous microspheres and solvents are prepared into a suspension, and then nano-inorganic particles treated with a silane coupling agent are added to the suspension, kept at a constant temperature of 30-100°C, stirred and refluxed at a high speed, and the inorganic / polymerized porous composite microspheres. The invention solves the problem that the particle size of nano inorganic particles used in cosmetics is too fine to agglomerate and block pores, and at the same time, its porous structure can carry cosmetic active substances with different functions, so as to achieve multi-component coexistence and slow release and controlled release. Compared with other sustained-release microspheres, the composite microsphere has a photoprotective effect on the cosmetic active substances easily oxidized inside, and the sustained-release performance is increased by more than three times.

Description

technical field

[0001] The invention relates to a novel loading system for cosmetics, specifically an inorganic / polymer porous composite microsphere (particle) capable of simultaneously loading cosmetic nano-inorganic particles and various skin care active ingredients and a preparation method thereof. Background technique

[0002] In the face of intense market competition and strong consumer demand for high-efficiency, multi-functional personal care products, traditional design and manufacturing technologies can no longer meet the needs of high-end cosmetic formulations. The cosmetic activity that can be added by using existing formulation design technologies The content and types of components are also extremely limited. Among all kinds of high-end cosmetics, most of them need to have several or more functions: anti-aging, freckle removal, acne removal, sun protection, anti-UV, whitening, heat preservation, etc. In order to have several functions in a certain cosmetic at t...