Melaleuca alternifolia, or australian tea tree oil as it is more commonly known, is a native australian plant with many remarkable properties. when crushed and distilled, the leaves of this plant yield a 100% natural oil which is an antiseptic, a fungicide, and a mild solvent. as a completely natural product, tea tree oil has many uses from insect repellent to the relief of the symptoms of arthritis. some other uses include: medicinal purposes, skin care and hygiene, hair care.