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Banned Substance

Alkali pentacyanonitrosylferrate (2-)

CAS 14402-89-2 / 13755-38-9
4

Safety score · 0–100

Avoid

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

Sodium nitroprusside is a hospital-only IV vasodilator that releases cyanide. Listed in EU Annex II — never appropriate for cosmetic use.

Skin benefits

  • Pharmaceutical vasodilator (intravenous, in hospital settings)

Known concerns

  • EU Annex II banned in cosmetics
  • Releases cyanide on metabolism
  • Pharmaceutical-only use
  • Not appropriate for any topical product

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.