Terpineol is usually a mixture of three isomers: alpha-, beta-, and gamma-terpineol. gamma-Terpineol is isolated from carrot oils, from the cinnamon tree (Cinnamomum zeylanicum) and Scotch pine (Pinus sylvestris), it is found in Thymus persicus, Wild Rhododendron tomentosum Harmaja and Teucrium persicum Boiss essential oils, as an odorant in Moroccan green olives.

Alpha-terpineol is a monoterpene found in the essential oils of several aromatic plant species. It has an anti-inflammatory and antioxidant effects. alpha-Terpineol is a fragrance ingredient used in decorative cosmetics, fine fragrances, shampoos, toilet soaps, and other toiletries as well as in non-cosmetic products such as household cleaners and detergents. alpha-Terpineol was approved by the FDA as a flavor.