@draleksandrabrown: Dandruff, fungal, acne, and tinea versicolor are all caused by yeast. Over-the-counter anti-dandruff shampoos are very effective ways of treating all three of these conditions. The trick to using these is to apply and let it sit for 2 to 3 minutes before rinsing. Look for active ingredients, such as zinc pyrithione, selenium sulfide, and ketoconazole. #dandruff #fungalacne #acne #tineaversicolor #shampoo #bodywash #facewash #dermatologist #doctor #medical #fyp #viral