SILICONE QUATERNIUM-30 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SILICONE QUATERNIUM-30

Safety grade: A

This conditioning agent is a silicone-based ingredient that helps smooth hair and skin by coating the surface to reduce frizz and improve shine. It makes products glide on more easily and leaves hair feeling softer and more manageable. It's commonly found in shampoos, conditioners, and styling products.

Graded using: COSING.

Last verified: June 9, 2026