POLYQUATERNIUM-64 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYQUATERNIUM-64

Safety grade: A

This is a lightweight synthetic conditioning agent that coats hair strands to smooth the cuticle and reduce frizz. It helps hair feel softer and more manageable without weighing it down.

Polyquaternium-64 conditions and detangles hair by coating the hair shaft, improving smoothness, shine, and combability while reducing static and flyaways.

Graded using: COSING.

Last verified: May 26, 2026