POLYQUATERNIUM-89 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYQUATERNIUM-89

Safety grade: A

This is a synthetic polymer, which is a long-chain molecule created in a lab that has a positive electrical charge. It's designed to form a protective layer on your skin or hair.

This ingredient creates a thin, flexible film on the skin's surface that helps lock in moisture, improve texture, and provide a smooth, protective barrier.

Graded using: COSING.

Last verified: May 26, 2026