diazolidinyl urea
Germall IIN,N'-Bis(hydroxymethyl)urea
Preservative
Diazolidinyl urea is an ingredient found in many personal care products like lotions and shampoos. It helps keep these products fresh by stopping tiny germs from growing and spoiling them.
Moderate Concern
Source: EWG Skin Deep
This ingredient can release small amounts of formaldehyde, which is a known allergen and can cause skin irritation for some people.
What is diazolidinyl urea in herbal facewashes?- Dr. Rasya Dixit
Doctors' Circle World's Largest Health Platform
r/AsianBeauty
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[Guide] Ceramides in skin care - a scam??? Ceramide research comes from Korea? Which Korean companies use their own patented ceramide technology then? + Urea
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Last updated: May 16, 2026