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ALPHA-PHELLANDRENE

CAS 99-83-2
68

Safety score · 0–100

Fine

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

About

A monoterpene found naturally in essential oils with a pleasant citrus-herb aroma, requiring IFRA restrictions due to skin sensitization.

Alpha-phellandrene is a cyclic monoterpene present in essential oils like tea tree, eucalyptus, and star anise. The EU's IFRA program has reviewed phellandrene and requires sensitizer disclosure at defined concentrations. While naturally occurring, the compound's oxidation products can increase allergenic risk, requiring careful storage and formulation control.

Known concerns

  • Skin sensitizer (IFRA restricted)
  • Oxidation products increase allergen risk
  • IFRA concentration limits apply

References

EU

EU CosIng database

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

Related others

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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.