POLYURETHANE-46 is graded B (Low Concern) by Expert·ING, based on COSING regulatory data. It is restricted under EU COSING — AnnexIII-CONCENTRATION-.
POLYURETHANE-46
Safety grade: B
Polyurethane-46 is a synthetic polymer (a long chain of linked molecules) that forms a flexible film on hair. It's created in a lab and used to coat and protect hair strands.
This ingredient conditions hair by forming a protective coating that seals moisture into the hair shaft, reduces frizz, and improves smoothness and shine.
Graded using: COSING.
- EU COSING — Restricted
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