DEDM HYDANTOIN is graded A (Safe) by Expert·ING, based on COSING regulatory data.

DEDM HYDANTOIN

DMDM Hydantoin

Safety grade: A

DMDM Hydantoin is a preservative that kills bacteria and prevents mold and mildew from growing in cosmetic products. It helps keep your skincare and beauty products fresh and safe to use.

This ingredient acts as a preservative to protect cosmetic products from microbial contamination, extending shelf life and ensuring product safety during storage and use.

Graded using: COSING.

Last verified: May 26, 2026