POLYURETHANE-52 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
POLYURETHANE-52
Safety grade: A
This is a synthetic polymer, similar to plastic materials, that forms a flexible film on the nail surface. It helps create a protective coating that conditions and strengthens nails.
Polyurethane-52 conditions nails by forming a breathable protective layer that helps lock in moisture, improve flexibility, and prevent brittleness and breakage.
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