Refresh the scalp and increase hair volume with Nioxin\'s 3-part System 3 Scalp Treatment for Coloured Hair with Light Thinning. This diameter-increasing professional product refreshes the scalp and gives a healthy shine to your hair. With its Transactiv Delivery System 2.0, the volumising Nioxin leave-on treatment helps provide thicker hair by increasing the fullness of each hair strand. Nioxin Scalp Treatment is the final step of the 3-part System, which amplifies hair texture while protecting against breakage.