KETOSULF SHAMPOO is an antifungal medication used to control scaling, flaking, and itching caused by dandruff. Dandruff is caused by excessive growth of Pityrosporum orbiculare (Malassezia furfur), which is part of normal skin flora. It is also used to treat irregular white or brown patches which occur on the body and sometimes appear after being in the sun (tinea/pityriasis versicolor). Regular application of Ketodoc Shampoo on the scalp relieves itching and discomfort in people suffering from dandruff.