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SESH INGREDIENT FILE

DMDM Hydantoin

INCI DMDM Hydantoin

Preservative / Formaldehyde Releaser Formula Support

What it is & what it does

DMDM Hydantoin is a preservative used to protect a formula from microbial contamination.
It is a formaldehyde-releasing preservative, so its consumer relevance is safety/stability rather than a skin benefit. Cosmetic safety assessments permit its use within regulated/formulated limits, but formaldehyde-sensitive people may react.

Usage & cautions

People with known formaldehyde or formaldehyde-releaser allergy should avoid it.
Information approach Consumer-friendly summaries are informed by established cosmetic ingredient references such as INCIDecoder and Paula’s Choice Ingredient Dictionary, while avoiding turning ingredient-level evidence into medical claims about the finished product.