Nioxin's Scalp Optimizing Anti-Dandruff Cleanser helps improve the scalp's foundation by treating irritation, associated with dandruff, that may negatively impact growing healthy hair. Start with Nioxin Scalp Optimizing Cleanser to clear the scalp and reduce surface damage to new hair. Follow with Scalp Optimizing Anti-Dandruff Conditioner to help minimize the appearance of thinning by reducing hair fall due to breakage and to leave hair smooth and manageable.