Is Diazolidinyl Urea Safe? What You Need to Know
Safety Score
Concern Level: very-high
Diazolidinyl Urea has significant safety concerns. We recommend avoiding products containing this ingredient.
What Is Diazolidinyl Urea?
A formaldehyde-releasing preservative that releases more formaldehyde than imidazolidinyl urea. Broad-spectrum antimicrobial.
Commonly found in: face cream, hair conditioner, body lotion, makeup
Safety Research & Evidence
A formaldehyde-releasing preservative that releases more formaldehyde than imidazolidinyl urea. Broad-spectrum antimicrobial.
Regulatory status: CIR safe at current levels; EU restricts formaldehyde release
Health Concerns
formaldehyde releaser
Evidence: StrongResearch indicates formaldehyde releaser may be associated with exposure to Diazolidinyl Urea. Particularly concerning for formaldehyde-sensitive individuals, children.
contact allergen
Evidence: StrongResearch indicates contact allergen may be associated with exposure to Diazolidinyl Urea. Particularly concerning for formaldehyde-sensitive individuals, children.
Vulnerable Populations
Extra caution recommended for: formaldehyde-sensitive individuals, children
Safer Alternatives
| Alternative | Safety Score |
|---|---|
| Sodium Benzoate | 8/10 |
How to Avoid Diazolidinyl Urea
- Read ingredient labels carefully for "Diazolidinyl Urea" or its chemical synonyms
- Choose products with third-party certifications (EWG Verified, Made Safe)
- Consider alternatives like Sodium Benzoate
- Check the EWG Skin Deep database for product ratings
- Look for "Diazolidinyl Urea-free" labels on product packaging
Frequently Asked Questions
Is Diazolidinyl Urea safe for babies?
No, we recommend avoiding Diazolidinyl Urea in products used on or around babies due to their developing systems.
What are the safest alternatives to Diazolidinyl Urea?
Safer alternatives include Sodium Benzoate (safety score: 8/10).
Is Diazolidinyl Urea banned in other countries?
Regulatory status: CIR safe at current levels; EU restricts formaldehyde release
How do I know if my product contains Diazolidinyl Urea?
Check the full ingredient list on the product label. Diazolidinyl Urea may also appear under different chemical names. Using apps like EWG Healthy Living or Think Dirty can help identify it.
Related Safety Guides
References
- de Groot AC et al. (2010). Contact sensitization to formaldehyde-releasing preservatives PMID: 21291366