Diazolidinyl Urea
Formaldehyde-releasing preservative with a broad spectrum against bacteria and fungi. Works effectively but triggers contact dermatitis.
Evidence by route
Topical application
DVery weak or conflicting data.
One of the most active formaldehyde releasers. Patch-test clinics record high sensitization rates, and the EU keeps it under strict control.
Tolerability and safety
Irritation potential
MediumAllergen risk
HighPregnancy
CautionSkin types
Use with caution
Frequently asked questions
Is Diazolidinyl Urea safe during pregnancy?
Diazolidinyl Urea should be used with caution during pregnancy. Consulting a dermatologist or OB-GYN is advisable.
What skin types is Diazolidinyl Urea for?
Use with caution in: sensitive.
Can Diazolidinyl Urea irritate the skin?
Diazolidinyl Urea has moderate irritation potential. Sensitive skin may show a transient reaction that usually settles with adaptation.
Can Diazolidinyl Urea cause an allergic reaction?
Diazolidinyl Urea has high allergen potential. Perform a patch test on the inner forearm 24 hours before facial application.