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Colorant

OXOBENZOXAZINYL NAPHTHALENE SULFOANILIDE

CAS 10128-55-9 Updated
45

Safety score · 0–100

Moderate

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

About

A specialty fluorescent dye built from a naphthalene sulfonanilide and benzoxazinone core. Limited cosmetic safety data and sulfonamide chemistry argue for caution.

Function

UV ABSORBER

Skin benefits

  • Specialty fluorescent / UV-active dye
  • Used in nail and specialty color formulas

Known concerns

  • Sulfonamide class — possible cross-reactivity in sulfa-allergic users
  • Limited cosmetic safety dossier
  • Aromatic amine degradation pathway possible
  • Not on EU Annex IV permitted colorants list

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.