Another important characteristic of silicon dioxide is its strong ability to reflect ultraviolet light, good stability, and ability to not decompose or change color after being exposed to ultraviolet radiation. It also does not react chemically with other components in the formula. Therefore, silica has played a good foundational role in the upgrading and replacement of sunscreen cosmetics.

Cosmetic silica is a non-toxic white powdery substance with various characteristics, such as strong adsorption ability. It can be used as an anti caking agent and thickener in cosmetics, improving storage stability and dispersion of powdered products, and is widely used.