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Benzene

CAS 71-43-2
5

Safety score · 0–100

Avoid

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

About

A known human carcinogen with H340 (genotoxicity) and H350 (carcinogenicity) classifications, absolutely prohibited in cosmetic products across all EU markets.

Benzene is classified as a known human carcinogen (IARC Group 1) with H340 (may cause genetic defects), H350 (may cause cancer), H372 (organ toxicity with repeated exposure), H304 (aspiration hazard), and multiple additional hazard statements. It is listed in EU Annex II and may not be used in cosmetic products at any concentration. The zero-tolerance approach reflects the well-established carcinogenicity of benzene, which has no acceptable threshold for cosmetic use.

Known concerns

  • EU Annex II banned — known human carcinogen
  • H340 genotoxicity
  • H350 carcinogenicity
  • H304 aspiration hazard
  • No safe threshold for 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.