Is DMDM Hydantoin Safe? What You Need to Know
Safety Score
Concern Level: very-high
DMDM Hydantoin has significant safety concerns. We recommend avoiding products containing this ingredient.
What Is DMDM Hydantoin?
A preservative that works by slowly releasing formaldehyde. It is one of several formaldehyde-releasing preservatives used in personal care.
Commonly found in: shampoo, conditioner, body wash, baby shampoo
Safety Research & Evidence
A preservative that works by slowly releasing formaldehyde. It is one of several formaldehyde-releasing preservatives used in personal care.
Regulatory status: Not restricted by FDA; EU limits formaldehyde release to 0.2% in final product
Health Concerns
formaldehyde releaser
Evidence: StrongResearch indicates formaldehyde releaser may be associated with exposure to DMDM Hydantoin. Particularly concerning for children, those with formaldehyde sensitivity, eczema patients.
carcinogen exposure
Evidence: StrongResearch indicates carcinogen exposure may be associated with exposure to DMDM Hydantoin. Particularly concerning for children, those with formaldehyde sensitivity, eczema patients.
skin sensitization
Evidence: StrongResearch indicates skin sensitization may be associated with exposure to DMDM Hydantoin. Particularly concerning for children, those with formaldehyde sensitivity, eczema patients.
Vulnerable Populations
Extra caution recommended for: children, those with formaldehyde sensitivity, eczema patients
Safer Alternatives
| Alternative | Safety Score |
|---|---|
| Phenoxyethanol | 6/10 |
| Sodium Benzoate | 8/10 |
How to Avoid DMDM Hydantoin
- Read ingredient labels carefully for "DMDM Hydantoin" or its chemical synonyms
- Choose products with third-party certifications (EWG Verified, Made Safe)
- Consider alternatives like Phenoxyethanol or Sodium Benzoate
- Check the EWG Skin Deep database for product ratings
- Look for "DMDM Hydantoin-free" labels on product packaging
Frequently Asked Questions
Is DMDM Hydantoin safe for babies?
No, we recommend avoiding DMDM Hydantoin in products used on or around babies due to their developing systems.
What are the safest alternatives to DMDM Hydantoin?
Safer alternatives include Phenoxyethanol (safety score: 6/10), Sodium Benzoate (safety score: 8/10).
Is DMDM Hydantoin banned in other countries?
Regulatory status: Not restricted by FDA; EU limits formaldehyde release to 0.2% in final product
How do I know if my product contains DMDM Hydantoin?
Check the full ingredient list on the product label. DMDM Hydantoin 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 and formaldehyde-releasing preservatives PMID: 21291366