SILICONE QUATERNIUM-28 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SILICONE QUATERNIUM-28

Safety grade: A

This synthetic conditioning agent is derived from silicone and works to smooth and soften hair and skin by creating a protective layer on the surface. It helps reduce frizz, improve shine, and make products easier to spread and apply evenly in shampoos, conditioners, and styling products.

Graded using: COSING.

Last verified: June 9, 2026