Buchu oil, made from the buchu shrub. Considered toxic and no longer widely used.[3] Formerly used medicinally.
Calamodin oil or calamansi essential oil comes from a citrus tree in the Philippines extracted via cold press or steam distillation.
Calamus oil Used in perfumery and formerly as a food additive
Camphor oil used in cosmetics and household cleaners.[4]
Cannabis flower essential oil, used as a flavoring in foods, primarily candy and beverages. Also used as a scent in perfumes, cosmetics, soaps, and candles.[5]
Caraway seed oil, used a flavoring in foods. Also used in mouthwashes, toothpastes, etc. as a flavoring agent.[6]
Cardamom seed oil, used in aromatherapy. Extracted from seeds of subspecies of Zingiberaceae (ginger). Also used as a fragrance in soaps, perfumes, etc.
Cedar oil (or cedarwood oil), primarily used in perfumes and fragrances.
Chamomile oil, there are many varieties of chamomile but only two are used in aromatherapy, Roman and German. German chamomile contains a higher level of the chemical azulene
Costmary oil (bible leaf oil), formerly used medicinally in Europe; still used as such in southwest Asia.[8] Discovered to contain up to 12.5% of the toxin β-thujone.[9]
Douglas-fir oil is unique amongst conifer oils as Douglas-fir is not a true Fir but its own genus. The New Zealand variety steam distilled using mountain spring water is particularly sought after for its purity and chemical profile.
Elemi oil, used as a perfume and fragrance ingredient. Comes from the oleoresins of Canarium luzonicum and Canarium ovatum which are common in the Philippines.
Geranium oil, also referred to as geranol. Used in herbal medicine, aromatherapy, and perfumery.[13]
Ginger oil, used medicinally in many cultures, and has been studied extensively as a nausea treatment, where it was found more effective than placebo.[14][15][16][17]
Goldenrod oil used in herbal medicine, including treatment of urological problems.[18]
Henna oil, used in body art. Known to be dangerous to people with certain enzyme deficiencies.[20] Pre-mixed pastes are considered dangerous, primarily due to adulterants.[21][22]
Orange oil, like lemon oil, cold pressed rather than distilled. Consists of 90% d-Limonene. Used as a fragrance, in cleaning products and in flavoring foods.
Sandalwood oil, used primarily as a fragrance, for its pleasant, woody fragrance.[24]
Sassafras oil, from sassafras root bark. Used in aromatherapy, soap-making, perfumes, and the like. Formerly used as a spice, and as the primary flavoring of root beer, inter alia. Sassafras oil is heavily regulated in the United States due to its high safrole content.[25]
Savory oil, from Satureja species. Used in aromatherapy, cosmetic and soap-making applications.
Star anise oil, highly fragrant oil using in cooking. Also used in perfumery and soaps, has been used in toothpastes, mouthwashes, and skin creams.[26] 90% of the world's star anise crop is used in the manufacture of Tamiflu, a drug used to treat influenza, and is hoped to be useful for avian flu
^"Agar". Nagaon. Archived from the original on 2006-09-20. Retrieved 2006-11-17.
^Singh, Gurdip; Maurya, Sumitra; Catalan, C.; de Lampasona, M. P. (June 2004). "Chemical Constituents, Antifungal and Antioxidative Effects of Ajwain Essential Oil and Its Acetone Extract". Journal of Agricultural and Food Chemistry. 52 (11): 3292–3296. doi:10.1021/jf035211c. hdl:11336/105641. PMID15161185.
^Dron P, Lafourcade MP, Leprince F, et al. (June 2007). "Allergies associated with body piercing and tattoos: a report of the Allergy Vigilance Network". European Annals of Allergy and Clinical Immunology. 39 (6): 189–92. PMID17713170.