Ingredient
DMDM Hydantoin (formaldehyde-releaser)
What is DMDM Hydantoin (formaldehyde-releaser)?
DMDM Hydantoin is a formaldehyde-releasing preservative used in cosmetics and personal care products. It is a white, crystalline powder and is synthesized chemically for use in these products.
It is used to protect formulas from microbial growth, thereby extending the shelf life of the products it is added to. Concerns have been raised due to its nature as a formaldehyde releaser, as formaldehyde is a known allergen and potential carcinogen in high concentrations. However, DMDM Hydantoin releases formaldehyde slowly and in very small amounts.
When you see DMDM Hydantoin on a label, it's important to consider your personal sensitivity to formaldehyde and the concentration present in the product.
Commonly found in: Shampoos, Conditioners, Hair gels, Lotions, Creams
What to watch
- Releases formaldehyde, which is a known skin allergen and can cause irritation.
- Formaldehyde is classified as a potential human carcinogen by IARC in high exposures.
Benefits
- Effective at preventing microbial growth and extending shelf life of products.
Formaldehyde-releasing preservatives are regulated to ensure safe use levels in cosmetic products.
Research shows it can be an allergen, but its use at low concentrations is generally considered safe by regulators.
DMDM Hydantoin is not derived from animal sources and is generally considered vegan.
Sources: Cosmetic Ingredient Review Expert Panel, Final Report on the Safety Assessment of DMDM Hydantoin
Scout's take
DMDM Hydantoin is a preservative that slowly releases formaldehyde — a Group 1 known human carcinogen (IARC) — in the product to prevent microbial growth. The formaldehyde release exposes scalp and respiratory tract during application. Banned or restricted in cosmetics in the EU and several US states.
Found in 2 products
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