The main difference between cosmetic silica and ordinary silica lies in its form and role in cosmetics, which can improve the performance and appearance of products. Cosmetic silica can prevent powdery cosmetics from clumping, improve their dispersibility and stability.

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.