Nizoral Anti-Dandruff Treatment Shampoo with 1% ketoconazole not only helps to treat the dandruff symptoms, but also the cause. The shampoo helps fight the fungus that causes dandruff. The shampoo contains a gentle, active ingredient and is for the treatment of dandruff associated with fungal infections and provides effective deep conditioning.Nizoral Anti-Dandruff Shampoo 1% does not leave an awful smell to the hair like other treatment shampoos may. The shampoo leaves the hair looking healthy and shiny.