DMDM Hydantoin
Formaldehyde-releasing agentImidurea
Preservative
DMDM hydantoin is a chemical used to prevent the growth of bacteria and mold in personal care products. It works by slowly releasing formaldehyde, a known carcinogen, over time.
High Concern
Source: EWG Skin Deep
DMDM hydantoin is considered a high concern ingredient because it releases formaldehyde, a known human carcinogen, which can cause cancer and other health problems.

Liquid DMDM Hydantoin | Available on IndiaMART
Madhav Chem
r/IndianSkincareAddicts
30
Why are we avoiding DMDM Hydantoin like the plague?
Formaldehyde and Formaldehyde Releasing Preservatives in Personal Care Products Used by Black Women and Latinas.
Dodson RE, Franklin ET, Zota AR
2025
Read on PubMedRelated Ingredients
Last updated: May 16, 2026