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Organic UV filter (sunscreen)

Phenol, 2-(2H-Benzotriazol-2-yl)-4-Methyl-6-(2-Methyl-3-(1,3,3,3-Tetramethyl-1-(Trimethylsilyl)Oxy)-Disiloxanyl)Propyl

CAS 155633-54-8 Updated
75

Safety score · 0–100

Fine

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

About

Drometrizole Trisiloxane (Mexoryl XL) is an EU-approved silicone-based UV filter providing broad-spectrum, photostable sunscreen protection. Generally safe but raises eco concerns.

Skin benefits

  • Silicone-modified benzotriazole UV absorber (Drometrizole Trisiloxane / Mexoryl XL)
  • Photostable UVA/UVB sunscreen filter approved in EU Annex VI
  • Boosts SPF and broad-spectrum protection
  • Large lipophilic molecule with limited skin penetration

Known concerns

  • Benzotriazole UV absorbers raise aquatic persistence questions
  • Possible skin irritation in very sensitive users
  • Should be used within Annex VI limit of 15 percent

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, so always read the physical product label and consult a healthcare professional for personal concerns.