POLYQUATERNIUM-109 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
POLYQUATERNIUM-109
Safety grade: A
This is a synthetic conditioning agent made in the lab that coats hair strands to make them smoother and easier to manage. It helps reduce frizz and tangles while adding shine to hair.
This ingredient conditions and smooths hair by forming a protective coating on the hair shaft, improving combability, reducing static, and enhancing shine and softness.
Graded using: COSING.
Last verified: May 26, 2026
Other Hair Conditioning ingredients
- GLYCERIN — Grade B
- COCAMIDOPROPYL BETAINE — Grade A
- PANTHENOL — Grade A
- CAPRYLYL GLYCOL — Grade A
- SALICYLIC ACID — Grade C**
- CYCLOPENTASILOXANE — Grade C**
- BEHENTRIMONIUM CHLORIDE — Grade A
- MALTODEXTRIN — Grade A