DIAZOLIDINYL UREA
Is DIAZOLIDINYL UREA safe for seborrheic dermatitis?
Diazolidinyl Urea can be acceptable in a preserved cosmetic, but it deserves caution if your seb-derm-prone skin is also sensitive or you have a formaldehyde allergy. It protects the product from microbes; it does not treat Malassezia on the skin.
Clinical reviews identify Diazolidinyl Urea as a formaldehyde-releasing preservative relevant to contact allergy. That is not proof that it worsens seb derm for everyone, but during an active flare a simpler formula may be easier to tolerate and assess.
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What is it?
A quick identity check, separate from the seb derm guidance above.
01 / 05- Material type
- Antimicrobial preservative
- Ingredient family
- Formaldehyde-releasing preservative
- Cosmetic function
- Preservative
What is DIAZOLIDINYL UREA used for in skincare?
Diazolidinyl Urea is a broad-spectrum preservative used to stop bacteria and other unwanted microbes from growing in water-based cosmetics. It gradually releases small amounts of formaldehyde as part of its preservation action and is often paired with other preservative ingredients.