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UV Filter

Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (nano)

CAS 103597-45-1
78

Safety score · 0–100

Fine

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

Tinosorb M nano — a modern broad-spectrum UV filter that both reflects and absorbs UVA and UVB. EU-approved with strict nano labeling; not yet US-approved. Low skin absorption; main caveats are aquatic environment.

Skin benefits

  • Broad-spectrum UVA + UVB protection
  • Photostable in sun
  • Dual mechanism (reflective + absorptive)
  • Suitable for sensitive skin (low absorption)

Known concerns

  • Nano particle status — EU requires labeling
  • Not FDA-approved (USA)
  • Aquatic environmental persistence concerns
  • SCCS opinion sets allowable %

References

EU

EU CosIng database

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

Related uv filters

Same plant / compound family

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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.