Dominated by oxides like 1,8-cineole (eucalyptol) and monoterpenols like menthol, these oils are intensely fresh, sharp, and penetrating.
- Peppermint (Mentha piperita): Delivers a sharp, intensely cooling, minty-menthol aroma with clean herbaceous undertones. Operates as a vibrant top-to-middle note that stimulates mental clarity and cooling relief.
- Eucalyptus (Eucalyptus globulus / Radiata): Characterized by a sharp, camphorous, ozonic, penetrating fresh scent. Functions as a clear top note for airway opening and environmental cleansing.
- Tea Tree (Melaleuca alternifolia): Exhibits a fresh, medicinal, sharp, green-herbaceous aroma. Acts as a middle note with powerful purifying and antimicrobial qualities.
- Rosemary (Rosmarinus officinalis): Features a crisp, clear, herbaceous, pine-camphorous scent that stimulates focus and acts as a strong middle note.
- Citronella (Cymbopogon nardus): Provides a grassy, sharp, lemon-like herbaceous aroma with woody undertones, serving as a functional top-to-middle insect-repelling note.
