This article is about essential oil isolated from the leaves of the tea tree, Melaleuca alternifolia. For the sweet seasoning oil pressed from Camellia seeds, C. sinensis or C. oleifera, see tea seed oil.
Tea tree oil, also known as melaleuca oil, is an essential oil with a fresh, camphoraceousodor and a colour that ranges from pale yellow to nearly colourless and clear.[1][2] It is derived from the leaves of the tea tree, Melaleuca alternifolia, native to southeast Queensland and the northeast coast of New South Wales, Australia. The oil comprises many constituent chemicals, and its composition changes if it is exposed to air and oxidizes. Commercial use of tea tree oil began in the 1920s, pioneered by the entrepreneur Arthur Penfold.
Tea tree oil is neither a patented product nor an approved drug in the United States,[2][8] although it is approved as a complementary medicine for aromatherapy in Australia.[9] It is poisonous if consumed by mouth and is unsafe for children.[10]