Skip to content

Sulfisoxazole

CAS 127-69-5
32

Safety score · 0–100

Caution

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

About

Sulfisoxazole is a cosmetic ingredient. Exercise caution due to limited available safety data.

Sulfisoxazole is a sulfonamide antibiotic that was occasionally used in topical products for its antimicrobial properties. The EU Cosmetetic Regulation restricts its use due to documented sensitization potential (H315, H319, H335). Sulfonamides are among the substances listed in Annex III with concentration limits or restrictions for leave-on products.

Known concerns

  • Sensitization risk (skin allergy)
  • Sulfonamide antibiotic restriction (EU Annex III)
  • Not approved for cosmetic use in EU

References

EU

EU CosIng database

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

Check your shelf

Find Sulfisoxazole in your products.

Scan any cosmetic product with LuxSense to see if it contains Sulfisoxazole and get a full ingredient breakdown with safety scores.

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.