P-MENTHADIENE
Other
Moderate
CAS Number: 555-10-2
About P-MENTHADIENE
P-Menthadiene is a cosmetic ingredient used in product formulations. Its specific function may vary between products. Exercise caution due to limited available safety data.
Detailed Analysis
p-Menthadiene refers to isomers of gamma-terpinene or similar monocyclic terpenes that occur naturally in various essential oils. These compounds are subject to EU cosmetic allergen labeling requirements when present above 0.001% in leave-on products or 0.01% in rinse-off products per Regulation 1223/2009 Annex III. A significant concern is auto-oxidation: upon exposure to air, these terpenes oxidize to peroxides and hydroperoxides that are potent skin sensitizers. The SCCS recommends antioxidant protection (e.g., BHT) to prevent oxidation before consumer use, and products must carry appropriate warnings regarding oxidation-related sensitization risks.
Skin Benefits
- ✓ Natural aromatic compound with citrus/herbal scent
- ✓ Present in essential oils with traditional aromatherapy use
Known Concerns
- ⚠ Auto-oxidation to skin-sensitizing hydroperoxides
- ⚠ EU allergen labeling requirement
- ⚠ Potentiation of sensitization upon oxidation
- ⚠ Essential oil component with variable composition
Safety Score
Moderate
Based on EU regulatory data, published safety research, and ingredient function analysis.
References
EU CosIng Database
European Commission cosmetic ingredient registry
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Download LuxSenseThis information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.