Diazolidinyl Urea
Notable concerns
INCI · Diazolidinyl UreaCAS 78491-02-8
Also known as: Germall II
Preservative
In plain language
A highly effective, broad-spectrum preservative that prevents bacterial growth by releasing formaldehyde.
Releases more formaldehyde than imidazolidinyl urea, leading to a higher risk of sensitization and allergic reactions.
Where it can be sold
Simplified regulatory status by market — for guidance, not compliance advice.
European UnionRestricted
Max 0.5%. Must carry 'contains formaldehyde' warning if threshold exceeded.