About this item: INTENSIVE ITCH RELIEF: 35% more dandruff fighting power fights Malassezia after 1 wash vs ordinary anti-dandruff shampoosPRESCRIPTION STRENGH: Made with 1% Selenium Sulfide for prescription strength dandruff relief and flaking protection flake protection vs prescription dandruff shampoo 2% ketoconazoleCLINICALLY PROVEN: Up to 100% dandruff protection visible flakes; with regular use See more product details