"Dandruff, also known as seborrheic dermatitis, is a skin condition that causes flaking and redness above the eyebrows, on the chest, underarms, the corners of mouth, as well as the scalp," Dr. Berson says. She adds that although dandruff is an inflammatory condition, yeast can also play a role. Look for medicated shampoos like Head & Shoulders Itchy Scalp Care ($6.49, Drugstore.com), which contains the anti-inflammatory ingredient zinc, or products with anti-yeast ingredients like ketoconazole. The popular shampoo now comes in with a sweet green apple scent!
For a natural dandruff fighter, try coconut oil!