Melaleuca (Tea Tree) melaleuca alternifolia Description: The Spark Naturals Melaleuca oil is considered to be the best in the world, it comes from Australia and is extracted from the leaves and twigs by steam distillation. Melaleuca or tea tree as it is called (once a substitute for tea) is a key ingredient of soaps, creams, lotions, and disinfectants throughout the world. Properties: Antimicrobial, Antiseptic, Antiviral, Fungicide, Insecticide and Stimulant Historical Uses: Melaleuca has been used for centuries to help the immune system; it acts as a stimulant and helps the body fight off disease, bacteria, infection, virus and illness. Tea Tree oil is great for the skin.