In the dynamic realm of cosmetics, the choice of fillers can significantly influence product performance and consumer satisfaction. Among these, silica powder stands out as a versatile ingredient, enhancing texture, adhesion, and longevity in formulations. However, with various types of silica powder available, understanding how to select the right one is crucial for achieving optimal results. This article explores the key factors in choosing suitable silica powder fillers for cosmetics, including morphology, specific surface area, and surface treatment, providing valuable insights for formulators aiming to create high-quality, effective beauty products.