Polymethylsilsesquioxane, commonly known as organosilicon micropowder, is a spherical, porous polymeric silicon material. With its advantages of wear resistance, smoothness, weather resistance, hydrophobicity, and good light transmittance, it is widely used in cosmetics, coatings, and plastics. Particle size is the core indicator determining its application.
Ultrafine particle size (1–3μm) silica micropowder has a large specific surface area, a delicate and soft texture, and no light-scattering particle feel, making it a core raw material for high-end makeup and skincare products. It can effectively fill fine lines and blur pores, creating a matte finish, while improving powder adherence to the skin and reducing powder settling and caking issues. It is suitable for loose powder, cushion foundations, and BB creams.
Medium particle size (3–8μm) offers balanced overall performance, combining smoothness and wear resistance, and is mainly used in coatings, inks, and plastics. It can improve the scratch and abrasion resistance of coatings, enhance the feel of the paint film, and effectively matte and prevent sedimentation, thus optimizing product texture and stability.
Large particle size (above 8μm) particles have a stable structure and strong support, providing outstanding anti-slip and wear-resistant effects, and are mainly used in industrial coatings and rubber modification. Generally speaking, smaller silica micropowder particle sizes emphasize skin feel and optical effects, while larger particle sizes are more geared towards industrial wear-resistant protection.