Nizoral Anti-Dandruff Shampoo gives you up to 3 months of treatment and prevention for dandruff and associated symptoms like dryness, flaking, redness, and itching. It is fragrance free and dermatologically tested. Nizoral Anti-Dandruff Shampoo What is Nizoral Anti-Dandruff Shampoo?Nizoral Anti-Dandruff Shampoo is a gentle shampoo that is used to treat and prevent dandruff and associated symptoms like dryness, flaking, redness, and itching. Is Nizoral Anti-Dandruff Shampoo Fragrance-Free?This product is fragrance-free and dermatologically tested. It is safe to use on colour-treated hair. How does Nizoral Anti-Dandruff Shampoo work?Nizoral Anti-Dandruff Shampoo contains the active ingredient Ketoconazole (also known as Nizoral), which prevents male hormones from being taken up by hair follicles. It calms your scalp and improves hair health.