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Prohibited Substance

methallenestril

CAS 517-18-0
3

Safety score · 0–100

Avoid

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A non-steroidal synthetic estrogen drug. Hormones are categorically prohibited in EU cosmetics under Annex II; methallenestril is a pharmaceutical with no skin-care application.

Skin benefits

  • Not a cosmetic ingredient

Known concerns

  • EU Annex II prohibited
  • Synthetic estrogen, endocrine active
  • Pharmaceutical-only
  • No cosmetic safety dossier

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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Check your shelf

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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.