ISDIN's NUTRADEICA anti-dandruff shampoo effectively alleviates dandruff and soothes itching from the initial uses. It results in hair that is smooth, glossy, and manageable. Featuring Piroctone Olamine in its formulation, users can expect noticeable improvements from the first applications, with results lasting up to 4 weeks. The ultimate outcome is dandruff-free hair that feels soft, has a radiant shine, and is easy to style. This product has undergone dermatological testing.