Polymethylsilsesquioxane

Polymethylsilsesquioxane is a spherical silicone resin powder composed of cross-linked siloxane polymers that forms rigid, hollow microspheres. These lightweight particles provide a unique soft-focus optical effect by scattering light to blur imperfections, while simultaneously delivering a silky, powdery skin feel without the heaviness of traditional fillers. Formulators choose it for its ability to absorb sebum, reduce shine, improve product spreadability, and create a velvety after-feel in color cosmetics, primers, and skincare products, making it particularly valuable in mattifying and blurring formulations.