Fumed silica (also known as silica microparticles or silica nanoparticles) is a commonly used cosmetic ingredient, and its application is mainly based on its special physical and chemical properties. The following are several common applications of fumed silica in cosmetics:

Oil-absorbing agent: Fumed silica has excellent oil-absorbing properties, which can absorb excess oil on the skin and keep the skin fresh and dry. It is commonly added to various face and makeup products such as foundations, powders, concealers, etc. to control skin shine and provide a long-lasting finish.

Filler: Due to its small particle size and high specific surface area, fumed silica can be used as a filler to improve the texture and feel of cosmetics. It is widely used in lotions, cream products, serums, etc. to give it a smooth and silky texture.

Dispersant: Fumed silica particles have good dispersibility, which can help disperse other pigments and granular components, so that they can be evenly distributed in cosmetics. This is very important to improve the stability and quality of cosmetics. It is commonly used in eye shadow, blush, lipstick and other products.

Light Scattering Agent: Fumed silica microparticles have good light scattering properties to scatter light and improve the appearance of skin tone. It is widely used in highlighting, brightening products and cosmetics with optical effects to make skin look brighter and smoother.

It should be noted that fumed silica particles used in cosmetics are usually surface modified and coated to ensure their stability and safety. Additionally, use and formulation as a cosmetic ingredient may vary according to product and regional regulatory requirements. When choosing and using cosmetics, it is recommended to refer to product instructions and consult a professional.