Extraction Mesmara Australian tea tree essential oil is extracted by the process of steam distillation from the Australian native plant melaleuca alternifolia benefits of Mesmara tea tree essential oil tea tree oil's antiseptic abilities fight and help heal skin irritations, including acne and dandruff can be used with a carrier oil or in facial washes and shampoos to add healing and deep-cleaning power use in a diffuser or humidifier, a few drops provide aromatherapy for home or office caution for external use only keep out of reach of children. Avoid contact with eyes. Avoid use with sensitive or damaged skin. Do not use undiluted on skin. Discontinue use if skin irritation occurs. Do not drop oils directly in ear canal or eyes. Oils can dissolve plastics - use in glass. Do a 2-days patch test for even the gentlest essential oils before using them generally.