Nioxin Scalp Recovery™ Purifying Cleanser is a shampoo proven to help prevent and relieve symptoms of seborrheic dermatitis, dandruff and other scalp-related problems such as flaking, dryness and itching. The dermatologically tested ingredients with Piroctone Olamine and green tea extract gently cleanse the scalp, help restore its natural balance and reduce hair loss associated with itching.