POLYQUATERNIUM-20 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYQUATERNIUM-20

Safety grade: A

This is a positively charged polymer (a chain of molecules) that is created in a laboratory. It's designed to cling to hair and skin to provide protective benefits.

Polyquaternium-20 reduces frizz and flyaways by eliminating static electricity, while also forming a thin protective layer on hair and skin to improve smoothness and shine.

Graded using: COSING.

Last verified: May 26, 2026