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Inproquone (INN)

CAS 436-40-8
20

Safety score · 0–100

Caution

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

About

Inproquone (INN) is a cosmetic ingredient used in product formulations. Its specific function may vary between products. Exercise caution due to limited available safety data.

Inproquone is a quinone-based alkylating agent that was investigated as an anticancer drug. It has no established cosmetic use and would function as a cytotoxic substance if applied to skin. The EU Cosmetics Regulation 1223/2009 does not include Inproquone in any positive list; substances with cytotoxic pharmacological activity are incompatible with cosmetic safety requirements. Its risk profile as an investigational drug with significant systemic toxicity precludes cosmetic application.

Known concerns

  • Cytotoxic pharmacological activity
  • Investigational drug with significant toxicity
  • Not approved in EU cosmetic positive lists
  • Not appropriate for topical 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 — always read the physical product label and consult a healthcare professional for personal concerns.