A topical, foamable composition is provided that includes at least one antifungal agent that is able to penetrate the upper layers of skin and is retained in or on an area to be treated for a prolonged period of time, and that has a residual non-volatile component content less than 25%. In addition, a method of treating fungal diseases including jock itch, tinea, dandruff and sebborheic dermatitis is provided, and includes applying to the affected area of patient requiring such treatment an antifungal composition.