Preservative
PEG-5 DEDM HYDANTOIN
Safety score · 0–100
Caution
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A formaldehyde-releasing preservative in the DMDM-hydantoin family. Slowly releases formaldehyde (an IARC Group 1 carcinogen) and is a known contact allergen — best avoided.
Function
Skin benefits
- Broad-spectrum preservation
- Inhibits gram-negative bacteria
- Cost-effective shelf-life extension
Known concerns
- Formaldehyde donor — releases free formaldehyde in product
- Documented contact allergen in formaldehyde-sensitive users
- IARC Group 1 carcinogen exposure pathway
- Restricted use in many EU formulations
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related preservatives
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.