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UV Filter

PHENYLBENZIMIDAZOLE SULFONIC ACID

CAS 27503-81-7 Updated
68

Safety score · 0–100

Fine

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

About

A water-soluble UVB sunscreen filter approved by the EU. Gives a light, non-greasy feel and boosts SPF, but only protects against UVB so it is paired with UVA filters.

Function

LIGHT STABILIZERUV ABSORBERUV FILTER

Skin benefits

  • Approved EU UVB filter (Annex VI)
  • Water-soluble — light feel
  • Boosts SPF in formulas
  • Long regulatory history

Known concerns

  • Possible photosensitivity in rare users
  • Not a broad-spectrum filter
  • Limited UVA protection

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

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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.