Thuja Natural Herbal Ointment with Hypericum and Pau Darco Traditional use references fungal infections, warts and corns, athletes foot, calluses, ringworm, plantar warts, incessant itching and tinea. Thuja (arborvitae) – Latin for Tree of Life – is an evergreen pine native to the mountainous slopes of eastern Canada. The Ojibwe Indians used the essential oil for the treatment of warts and fungal skin conditions, and also as a cleanser, disinfectant and insecticide. St Johns Wort / Hypericum – especially good for itching and irritation to the nerve endings.