POLYURETHANE-54 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
POLYURETHANE-54
Safety grade: A
This is a synthetic plastic-like polymer that forms a flexible protective coating. It's designed to adhere to nails and create a smooth, durable film.
Polyurethane-54 conditions and protects nails by forming a breathable coating that helps retain moisture, strengthen the nail surface, and improve flexibility to reduce breakage and brittleness.
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