Head & Shoulders is a brand of shampoo that is used to treat dandruff and other scalp conditions. The brand is known for its active ingredient, pyrithione zinc, which is an antifungal and antibacterial agent that helps to control dandruff. Head & Shoulders is owned by the company Procter & Gamble and has been on the market since 1961. In addition to its anti-dandruff shampoos, the brand also offers a range of conditioners and other hair care products.