Nizoral Psoriasis 2 in 1 shampoo and conditioner for scalp psoriasis relieves and helps prevent the itching, redness, irritation, flaking and scaling of scalp psoriasis. Contains maximum strength medicine to control your symptoms while leaving hair clean and conditioned. The special formula contains tea tree oil, green tea, and vitamins E, C, and B5 plus its free of artificial fragrances, preservatives, and dyes that may irritate skin. For best results use at least twice a week or as directed by a doctor.