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Banned Substance

1-Cyclopropyl-6,7-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid

CAS 93107-30-3
10

Safety score · 0–100

Avoid

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

A fluoroquinolone antibiotic intermediate (ciprofloxacin precursor) — EU-prohibited in cosmetics. Pharmacological activity and photosensitisation potential leave no safe cosmetic role.

Skin benefits

  • Pharmaceutical intermediate, not a cosmetic functional

Known concerns

  • EU Annex II prohibited substance
  • Fluoroquinolone antibiotic precursor
  • Photosensitisation potential
  • No legitimate cosmetic use

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.