POLYURETHANE-27 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYURETHANE-27

Safety grade: A

A synthetic polymer that forms a flexible, protective layer on skin and hair. It's a type of plastic material engineered to be soft and conditioning rather than stiff.

This ingredient creates a breathable film on the skin and hair surface that protects against moisture loss, improves smoothness, and helps products stay in place longer.

Graded using: COSING.

Last verified: May 26, 2026