POLY(METHYLSTYRENE ISOPROPANOL KETONE) is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLY(METHYLSTYRENE ISOPROPANOL KETONE)

Safety grade: A

This synthetic polymer is used in cosmetics to help products dry quickly and create a smooth, long-lasting finish on skin and nails. It forms a protective layer that resists smudging and improves how products feel when applied.

Graded using: COSING.

Last verified: June 9, 2026