Nizoral is the only over the counter dandruff shampoo with Ketoconazole – a clinically proven, powerful dandruff fighting ingredient. Nizoral does more than just treat your dandruff symptoms – it works differently, getting right to the root cause of your dandruff by controlling the fungus that’s causing it. Once the fungus is controlled, so are your dandruff symptoms. Ketoconazole, the antifungal active ingredient in Nizoral, is 10X MORE EFFECTIVE at fighting fungus, the primary cause of dandruff, than the active ingredient in the leading dandruff shampoo.* If you're struggling to find a shampoo that works effectively to get rid of your stubborn dandruff, turn to Nizoral and finally get freedom from dandruff!