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Preservative

FORMALDEHYDE

CAS 50-00-0
3

Safety score · 0–100

Avoid

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

An IARC Group 1 human carcinogen and one of the most hazardous substances in cosmetics history. Banned from EU cosmetics under Annex II. Strong sensitizer with severe irritation and genotoxicity concerns.

Skin benefits

  • No legitimate cosmetic use in EU

Known concerns

  • EU Annex II banned in cosmetics
  • IARC Group 1 carcinogen
  • Strong skin and respiratory sensitizer
  • Mutagenic and genotoxic
  • Severe eye and mucosal irritant

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.