POLYURETHANE-43 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYURETHANE-43

Safety grade: A

Polyurethane-43 is a synthetic polymer, which is a long-chain molecule made in a laboratory. It functions as a film-forming agent that creates a flexible, protective layer on the skin or hair.

This ingredient is used in cosmetics to form a breathable, flexible film on the skin or hair that provides hold, water resistance, and a smooth finish without feeling stiff or flaky.

Graded using: COSING.

Last verified: May 26, 2026