Tea tree oil is extracted from Melaleuca alternifolia of the Myrtaceae family and is also known as ti-tree, ti-trol and melasol. This oil must be one of the most used essential oils, and thousands of people swear by its wonderful healing properties. No house should be without this essential oil, as it is one of the most powerful immune system stimulants and sorts out most viral, bacterial and fungal infections in a snap, while it is great to clean wounds and also relieves muscle aches and pains. Tea tree oil is an ingredient of soaps, creams, lotions, deodorants, disinfectants and air fresheners.