Diazolidinyl Urea
Diazolidinyl urea is a formaldehyde-releaser that is a recognized contact allergen and is restricted in the EU; formaldehyde itself is classified as a Group 1 human carcinogen by IARC. It is not approved nor used as a food ingredient.
What it is
A formaldehyde-releasing antimicrobial preservative (CAS 78491-02-8) used in personal care products, not food.
Not a food ingredient. Used as a preservative in cosmetics and topical products.
Why it's flagged
- formaldehyde release
- skin sensitization
- not a food-grade additive
What regulators actually say
"Diazolidinyl urea is listed in Annex V of Regulation (EC) No 1223/2009 as an authorised preservative for cosmetic products at a maximum concentration of 0.5% with required labelling stating 'releases formaldehyde'."
"Formaldehyde is carcinogenic to humans (Group 1)."
Regulatory status
United States — FDA
Not approved as a food additive; regulated only under cosmetic provisions of FD&C Act.
European Union — EFSA
Restricted in EU cosmetics under Regulation 1223/2009 Annex V (max 0.5%) with mandatory labeling 'releases formaldehyde'.
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