POLYQUATERNIUM-105 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYQUATERNIUM-105

Safety grade: A

This is a synthetic conditioning agent made in a laboratory that helps hair feel softer and smoother. It works by coating the hair shaft to reduce frizz and improve manageability.

Polyquaternium-105 conditions and detangles hair while reducing static and frizz, leaving hair feeling silky and easier to comb.

Graded using: COSING.

Last verified: May 26, 2026

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