Prohibited pharmaceutical
5,5-Diphenyl-4-imidazolidone (Doxenitoin (INN))
Safety score · 0–100
Avoid
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
Doxenitoin is a pharmaceutical hydantoin compound structurally related to the anticonvulsant phenytoin. It has no legitimate cosmetic use and is prohibited as a drug substance under EU cosmetic rules.
Skin benefits
- Has pharmaceutical research applications
- Studied historically as an anticonvulsant compound
Known concerns
- Pharmaceutical compound related to anticonvulsant phenytoin
- Not authorized for cosmetic use anywhere in the world
- Systemic drug-like activity unacceptable in topical consumer products
- Lacks any cosmetic safety dossier
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related prohibited pharmaceuticals
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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.