Cosmetic silica can absorb a large amount of water and has excellent moisturizing properties. Cosmetic silica can evenly cover the surface of the skin, covering skin blemishes and making the skin smoother and more delicate. Cosmetic silica has good stability, is not prone to chemical reactions, and has no irritating effect on the skin.

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.