I’ve read that Oil of Oregano is similar to Tea Tree oil for fungal infections, but that it burns.
Because of its ability to kill parasites and fungal infections, tea tree oil is a great choice to use on nail fungus (onychomycosis), athlete’s foot and ringworm. Put 2–5 drops of undiluted tea tree oil on the affected area using a clean cotton swab. And for stubborn fungi, consider mixing it with natural anti-fungal oil of oregano
See:https://draxe.com/tea-tree-oil-uses-benefits/