Pure organic melaleuca alternifolia essential oil.
Scientific studies are increasingly demonstrating the highly antiseptic, anti-fungal and anti-viral properties of tea tree essential oil.
It can be applied undiluted, with care, to cold sores, spots, athlete’s foot and verrucae. (While rare, if essential oil sensitivity is a concern, please patch-test before use.)
Otherwise ensure this oil is appropriately diluted and seek professional advice.