POLYMETHYLSILSESQUIOXANE is graded A (Safe) by Expert·ING, based on COSING, FDA regulatory data.

POLYMETHYLSILSESQUIOXANE

Safety grade: A

This is a lightweight silicone-based powder that comes from silica, a natural mineral found in sand and rocks. It's processed in a lab to create tiny, fluffy particles that feel smooth on skin.

This ingredient makes products appear less shiny and more matte by scattering light, while also helping to smooth the skin's texture and improve how the product feels when applied.

Graded using: COSING, FDA.

Last verified: May 26, 2026