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Imidazolidinyl Urea
Imidazolidinyl Urea
Low concern
Not a food ingredient. As a formaldehyde donor, it is a recognized contact allergen and a noted concern in fragrance-allergic patients.
Found in
14 products
What it is
Formaldehyde-releasing antimicrobial preservative used in cosmetics and personal care products.
Cosmetic preservative; not a food ingredient.
Why it's flagged
- Formaldehyde release
- Contact allergen
- Sensitizer in formaldehyde-allergic individuals
What regulators actually say
"Imidazolidinyl urea is listed in Annex V of Regulation (EC) No 1223/2009 as an authorised preservative at maximum concentration 0.6% in cosmetic products."
Regulatory status
United States — FDA
Permitted in cosmetics (no food use)
European Union — EFSA
Not food; EU Cosmetics Regulation Annex V allows up to 0.6%
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