LIMONENE occurs naturally in many essential oils including: bay, bergamot, black pepper, chamomile, cistus, citronella, clary sage, coriander, cypress, elemi, eucalyptus, frankincense, galbanum, geranium, ginger, grapefruit, juniper, lavandin, lavender, lemongrass, lime, litsea, mandarin, neroli, niaouli, orange, palmarosa, peppermint, petitgrain, pine, Roman chamomile, rosemary, Spanish sage, spearmint (garden mint) and tea tree.