Nizoral A-D anti-dandruff shampoo is a great product to fight against dry, flaky, and dandruff scalp. This type of shampoo contains an active ingredient, 'Ketoconazole,' which is one kind of medicine named anti-fungal. Ketoconazole fight for fungi and yeasts to kill by causing holes to look in the cell membranes. It lets essential constituents of the cells leak out. It destroys the Pityrosporu yeast, which is responsible for every scalp issue. Like other anti-dandruff shampoos, Nizoral anti-dandruff shampoo also includes vital ingredients to clean hair and scalp.