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UV Filter

POTASSIUM PHENYLBENZIMIDAZOLE SULFONATE

Updated
80

Safety score · 0–100

Good

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

About

A water-soluble UVB filter (potassium salt of phenylbenzimidazole sulfonic acid). EU-approved, used in aqueous sunscreen bases. Generally well-tolerated within the 8% (acid) Annex VI cap.

Function

UV ABSORBERUV FILTER

Skin benefits

  • Water-soluble UVB filter
  • Boosts SPF in aqueous sunscreen phases
  • Photostable when properly formulated

Known concerns

  • Salt of phenylbenzimidazole sulfonic acid (Annex VI/8) — concentration cap applies
  • Possible mild contact sensitization in rare cases

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.