Description Related Variations Nioxin System 6 Smoothing Cytonutrient Actives Scalp Treatment is an advanced leave-in scalp treatment for the appearance of the "advanced stages" of thinning hair. Improves scalp environment with an exclusive chaperone-molecule delivery system. Product Options Available are as follows:Size : 3.4 oz - Nioxin System 6 Scalp Treatment for medium to coarse hair Nioxin System 6 Scalp Treatment for medium to coarse hair