POLYURETHANE-91 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYURETHANE-91

Safety grade: A

This synthetic polymer is used in cosmetics to create a flexible, protective film on skin and hair. It helps products like foundations and nail polishes stick better and last longer while maintaining a smooth feel. It's derived from petroleum-based chemicals combined through manufacturing processes.

Graded using: COSING.

Last verified: June 9, 2026