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

QUATERNIUM-30

Safety grade: A

Quaternium-30 is a synthetic conditioning agent designed to reduce static electricity and improve hair manageability. It works by coating the hair surface to make it smoother and easier to comb.

This ingredient is used in hair care products to eliminate frizz and static while providing conditioning benefits that leave hair softer and more polished.

Graded using: COSING.

Last verified: May 26, 2026