Get clinically proven relief for stubborn dandruff with Head & Shoulders Clinical Solutions Anti-Dandruff Shampoo. The maximum strength formula starts working from the first wash to help give you your healthiest scalp and relieve itchy scalp, all without needing a prescription. It works by immediately targeting and keeping away stubborn scalp issues for up to 7 days. This high strength shampoo for dry scalp also gently helps to moisturize your hair, leaving it soft and manageable. You'll be up and smelling fresh and clean.