Most antifungals work well. YOu can purchase Over the counter medications (OTC's) at any pharmacy (CVS,Walgreens). Kenalog, Nizoral and others like that come in a 1%
solution or cream. They are more expensive that just purchasing Selsun Blue, Heah & Shoulders or any local brand dandruff shampoo. The main ingredient you are looking for is Coal Tar. This is the most effective agent in the treatment of Tinea.