TEA TREE Greenleaf Essential Oil Native to the coastline areas of Australia, the Tea Tree is documented as being used for thousands of years by the Australian Aboriginals for its healing properties. The potent oil was even included in the first-aid kits of soldiers in World War II. Tea Tree Essential Oil produces a unique medicinal aroma with warm, spicy tones. Diffuser Tea Tree Essential Oil for a soothing scent. Each Greenleaf essential oil bottle holds 0.5 fl oz of 100% pure, natural, and undiluted essentials oils, and proceeds from this item are donated to organizations working to break the cycle of human trafficking.