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p-Mentha-1,4(8)- diene

CAS 586-62-9
65

Safety score · 0–100

Fine

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

About

P-Mentha-1,4(8)- diene is a cosmetic ingredient used in product formulations. Its specific function may vary between products. Exercise caution due to limited available safety data.

p-Mentha-1,4(8)-diene (also called terpinolene) is a monocyclic monoterpene hydrocarbon present in oils such as tea tree, citrus, and cardamom. Under EU cosmetic regulations, certain terpene hydrocarbons are monitored for fragrance allergen declarations. The SCCS has assessed terpene hydrocarbons for contact allergen potential; while not among the most restricted, some members of this class require declaration when present above 0.01% in leave-on products under EU Regulation 1223/2009 Annex III triggering rules.

Skin benefits

  • Natural citrus-like fragrance component
  • May contribute antimicrobial properties in topical formulations

Known concerns

  • Fragrance allergen potential requiring EU declaration above thresholds
  • Oxidation products from air exposure may increase sensitization
  • Some regulatory attention for environmental classification

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