DMDM Hydantoin
DMDM Hydantoin
Formaldehyde-releasing preservative. Effective antimicrobial in rinse-off products.
Last reviewed April 27, 2026 · Always verify against the current Health Canada Cosmetic Ingredient Hotlist before use.
Health Canada Hotlist — Restricted
Max concentration: 0.6%
As formaldehyde releaser. Max 0.2% free formaldehyde equivalent.
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