Nioxin System 3 Scalp & Hair Leave-in Treatment for Lightly Thinning Colored Hair works to refresh the scalp and increase hair volume. This volumizing leave-in hair treatment helps provide thicker-looking hair by increasing the fullness of each hair strand. Nioxin System 3 Hair & Scalp Treatment is the final step in the three-part system, amplifying hair texture and protecting against breakage Benefits: : Amplifies hair texture. Volumizing leave-in scalp treatment for lightly thinning color-treated hair. Protects against hair breakage. Increases the volume of each hair strand. Contains Nicotinate. Achieve the best results when you use all three steps of System 3 together. Nioxin is the #1 salon brand for thicker, fuller hair with over 30 years of experience in thinning hair. How to use: : Apply up to nine sprays of the leave-in treatment to damp hair and scalp. Distribute the product evenly, massage and comb. Do not rinse. Style the hair as usual. Daily use.