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ETHINYLESTRADIOL

CAS 57-63-6
3

Safety score · 0–100

Avoid

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

Ethinylestradiol is the synthetic estrogen in birth-control pills. It is banned in EU cosmetics and is an IARC Group 1 carcinogen via hormonal pathways.

Function

SKIN CONDITIONING

Skin benefits

  • No legitimate cosmetic benefit

Known concerns

  • EU Annex II banned in cosmetics
  • Synthetic estrogen used in oral contraceptives
  • Endocrine disruptor
  • IARC Group 1 carcinogen (in combined oral contraceptive use)
  • Prescription-only medicine, not a cosmetic

References

EU

EU CosIng database

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

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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.