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Fragrance

TRIMETHYL-8-METHYLENEBICYCLO-4-UNDECENE

CAS 118-65-0
64

Safety score · 0–100

Fine

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

Longifolene, a woody-pine sesquiterpene used as a fragrance fixative. Sesquiterpenes can sensitize especially after oxidation, so it sits mid-yellow.

Function

PERFUMING

Skin benefits

  • Woody-pine fragrance sesquiterpene
  • Naturally in pine resin
  • Used at trace %

Known concerns

  • Sesquiterpene fragrance sensitizer risk
  • Oxidation products may irritate
  • IFRA caps in leave-on

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.