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Preservative

POTASSIUM SALICYLATE

CAS 578-36-9 Updated
62

Safety score · 0–100

Fine

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

About

The potassium salt of salicylic acid, used as a preservative. EU-permitted under Annex V but not for under-3s (except shampoo); aspirin-sensitive people should patch-test first.

Function

ANTIMICROBIALPRESERVATIVE

Skin benefits

  • Effective preservative against bacteria and fungi
  • Mild keratolytic effect at higher concentrations
  • Listed in EU Annex V (permitted preservative)

Known concerns

  • Salicylate sensitization in susceptible users
  • EU restriction: not in products for children under 3 (except shampoo)
  • Aspirin-allergic users should avoid
  • Skin penetration of salicylate moiety

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.