Head & Shoulders original Classic Clean Dandruff Shampoo fights dandruff with a unique Hydrazinc anti-dandruff formula that moisturizes dry scalp, calms itchy scalp4, and keeps hair looking great., Why choose Head & Shoulders? If you re still seeing flakes with your current product, try the dandruff treatment dermatologists recommend most: Head & Shoulders. Our clinically-proven formula fights flakes better than typical anti-dandruff shampoos (6). Head and Shoulders has been proven effective in over 200 clinical tests, making it the most tested and most trusted5 dandruff shampoo in the world. -- A great dandruff shampoo should do more than fight flakes. Because healthy hair is important, Head & Shoulders infuses every shampoo with essential beauty shampoo elements, like rich moisturizers and fantastic fragrances. Our products are always tough on dandruff, but gentle on hair. That's why Head & Shoulders is the #1 selling dandruff shampoo in the world (5). Try the full line of Head & Shoulders products: From dry scalp to itchy scalp, dry hair to oily hair, and from a gorgeous green apple scent to handsome Old Spice freshness, Head & Shoulders has a version that s right for you. Explore our full line of shampoos, 2in1s, conditioners, and hair and scalp treatments. -- based on a 2013 survey of U. S. dermatologists. visible flakes, with regular use. satisfaction guaranteed. associated with dandruff, with regular use. P & G calculation based on Nielsen sales information July 2013 - June 2014. vs\.competitor anti-dandruff shampoo with 1% Pyrithione zinc.