While your genes are beyond your control, obviously, there are some steps you can take to prevent getting tinea versicolor. Planning ahead can really help. Let’s say you know you’re likely to get tinea versicolor during a certain time of year, such as when it’s hotter or muggier. Or maybe you’re traveling to a location with a hot humid climate. The key is to start using an antifungal preparation a few days before the weather gets hot and humid, or before you take a trip. Believe it or not, using an antifungal shampoo with selenium sulfide, such as Selsun Blue, as a body wash for your chest, arms, back, shoulders, and neck, can be a great preventative. Continue using it as a body wash throughout the humid season, or while you are traveling.