Diazolidinyl Urea
INCI: DIAZOLIDINYL UREA
Also known as: Germall II
Key Facts
- CAS Number
- 78491-02-8
- Category
- preservative
- Risk Level
- high
- Common Allergen
- Yes
- Max Concentration
- 0.5%
- Found In
- moisturizer, foundation, sunscreen
Is Diazolidinyl Urea safe in cosmetics?
Diazolidinyl Urea is rated high risk in cosmetic products. It is a known allergen that can cause contact dermatitis in sensitized individuals. Formaldehyde releaser. Can cause both irritant and allergic contact dermatitis. Safer alternatives include Phenoxyethanol, Sodium Benzoate, Potassium Sorbate. Commonly found in moisturizer, foundation, sunscreen.
What is Diazolidinyl Urea?
Formaldehyde-releasing preservative. Releases more formaldehyde than Imidazolidinyl Urea.
Allergy & Safety Information
Diazolidinyl Urea is classified as a high-risk ingredient. It is a known cause of allergic contact dermatitis. Individuals with sensitive skin or a history of contact allergies should avoid products containing this ingredient. A patch test is recommended before first use of any product containing Diazolidinyl Urea.
Cross-Reactions
If you react to Diazolidinyl Urea, you may also react to:
Safer Alternatives
These ingredients serve a similar function with lower allergy risk:
Frequently Asked Questions
Is Diazolidinyl Urea safe for sensitive skin?
Diazolidinyl Urea is a known allergen and is generally not recommended for sensitive skin. Consider patch testing before use.
What products contain Diazolidinyl Urea?
Diazolidinyl Urea is commonly found in moisturizer, foundation, sunscreen.
What does Diazolidinyl Urea do in cosmetics?
Diazolidinyl Urea functions as a preservative in formulations. Formaldehyde releaser. Can cause both irritant and allergic contact dermatitis.
Related Guides
Top 10 Cosmetic Allergens
Is Diazolidinyl Urea on the list? See the full clinical ranking.
Preservative Allergy Guide
Which preservatives cause the most reactions and what to use instead.
How to Read Ingredient Labels
Decode INCI names and find hidden allergens in your products.
Find Your Skin Allergy Trigger
Step-by-step elimination method to identify your trigger.
Contact Dermatitis Guide
Symptoms, causes, patch testing, and treatment options.
Is Diazolidinyl Urea causing YOUR skin reactions?
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