Nioxin System 1 Scalp Therapy is a botanical conditioner that provides superior moisture for fine or thin-looking hair and energizes the scalp relieving scalp tightness and tension without over-softening or weighing hair down with product buildup. Product Options Available are as follows: Size : 10.1 oz. - Nioxin System 1 Scalp Therapy Conditioner for Fine Hair Size : 128 oz. / gallon - Nioxin System 1 Scalp Therapy Conditioner for Fine Hair Size : 16.9 oz. - Nioxin System 1 Scalp Therapy Conditioner for Fine Hair Size : 25.4 oz - Nioxin System 1 Scalp Therapy Conditioner for Fine Hair Size : 33 oz. / liter - Nioxin System 1 Scalp Therapy Conditioner for Fine Hair Option - 1.7 oz - Nioxin System 1 Scalp Therapy Conditioner for Fine Hair 3.912