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Preservative

DIAZOLIDINYL UREA

CAS 78491-02-8
20

Safety score · 0–100

Caution

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A formaldehyde-releasing preservative — slowly gives off small amounts of formaldehyde to keep products fresh. Among the most common contact allergens; best avoided.

Skin benefits

  • Broad-spectrum preservation
  • Stable
  • Low cost

Known concerns

  • Formaldehyde releaser
  • High contact-allergen rank
  • EU 0.5% cap
  • Not for sensitive skin

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.