The present disclosure relates to a herbal oil formulation based on bark extract of Heterophragma roxburghii, that can be applied topically and can be used to for treating and curing various skin conditions and diseases, all types of wounds, and other therapeutic conditions associated with diminished blood flow in humans and animals. The disclosed topical herbal oil formulation provides an inexpensive alternative healing therapy for various therapeutic conditions such as, but not limited to, diabetic gangrene, dry gangrene, wet gangrene, athlete' s foot, burn wounds, diabetic foot ulcer, bed sore, chronic open wounds, wounds caused by snake bite, and gangrene formed due to cellulitis.