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Antimicrobial

BISPYRITHIONE

CAS 3696-28-4
15

Safety score · 0–100

Avoid

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

Pyrithione disulfide — an antifungal in the pyrithione family. Zinc pyrithione is now banned in EU cosmetics as a reproductive toxicant; the wider class is treated with strong caution.

Function

ANTIMICROBIAL

Skin benefits

  • Antifungal/antibacterial in haircare (historical)
  • Antidandruff effect
  • Preservative-style action

Known concerns

  • Pyrithione class flagged Repr. 1B (EU bans zinc pyrithione)
  • Skin and serious eye irritant
  • Aquatic toxicity
  • No longer recommended for cosmetic use in EU

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.