POLYURETHANE-49 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
POLYURETHANE-49
Safety grade: A
Polyurethane-49 is a synthetic polymer that forms a flexible, protective film. It's used in nail products to create a smooth coating that adheres well to nails.
This ingredient conditions nails by forming a breathable protective layer that helps prevent breakage, improves flexibility, and enhances the overall appearance and health of nail surfaces.
Graded using: COSING.
Last verified: May 26, 2026
Other Nail Conditioning ingredients
- COMMIPHORA MYRRHA RESIN EXTRACT — Grade A
- ECHINACEA ANGUSTIFOLIA ROOT EXTRACT — Grade A
- VACCINIUM MYRTILLUS LEAF EXTRACT — Grade A
- 2-METHYLPROPANAL — Grade A**
- 4,4'-ISOPROPYLIDENEDIPHENYL/EPICHLOROHYDRIN COPOLYMER DIACRYLATE — Grade A
- ACETALDEHYDE — Grade F**
- ACRYLIC ACID — Grade A**
- AMP-ISOSTEAROYL HYDROLYZED SILK — Grade B