POLYQUATERNIUM-111 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYQUATERNIUM-111

Safety grade: A

This is a synthetic conditioning polymer that helps reduce frizz and static electricity in hair. It works by coating the hair surface to make it smoother and easier to manage.

Polyquaternium-111 conditions hair by reducing static electricity and smoothing the hair cuticle, resulting in softer, shinier, and more manageable hair.

Graded using: COSING.

Last verified: May 26, 2026