POLYQUATERNIUM-84 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYQUATERNIUM-84

Safety grade: A

This is a synthetic polymer (plastic-like substance) that is positively charged, making it excellent at coating hair and reducing frizz. It's commonly used in hair care products to improve how hair looks and feels.

This ingredient coats the hair surface to reduce static electricity, create a protective film, improve softness and manageability, and help hair hold its style longer.

Graded using: COSING.

Last verified: May 26, 2026