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Fragrance

HEXAHYDRO-4,6,6,9,9-PENTAMETHYL-NAPHTHOPYRAN

CAS 1922-67-4
45

Safety score · 0–100

Moderate

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

A polycyclic synthetic musk used as a long-lasting fragrance fixative. Environmental persistence and allergen concerns drag down its safety rating.

Skin benefits

  • Persistent musk fragrance note
  • Effective at low concentrations

Known concerns

  • Polycyclic musk — bioaccumulation in aquatic species
  • Fragrance allergen with sensitisation reports
  • Environmental persistence concerns from EU regulators

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.