POLYQUATERNIUM-70 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYQUATERNIUM-70

Safety grade: A

This is a synthetic polymer that acts like a protective coating for your hair. It's a charged molecule that clings to hair strands to smooth and soften them.

This ingredient coats the hair shaft to reduce frizz, add shine, improve softness, and make hair easier to detangle and style.

Graded using: COSING.

Last verified: May 26, 2026