The nioxin's system 4 leave in scalp and hair treatment for color treated with progressed thinning, refresh the scalp and increase your hair volume. This volumizing leave on treatment foam helps to provide thicker looking hair by increasing the fullness of each hair strand. Nioxin's scalp and hair treatment is the final step of the 3 part system, which amplifies hair texture while protecting against breakage. Features and benefits amplifies hair texture. Volumizing leave on scalp treatment foam for color treated hair with progressed thinning. Protect against hair breakage. Increases the volume of each hair strand. Contain nicotinate. Best results achieved when used 3 steps together. To use shake well. Apply on damp hair and scalp up to 9 pumps evenly on the scalp, massage and comb. Style as usual. Do not rinse. Use daily. Use in combination with nioxin system 4 cleanser shampoo and scalp therapy conditioner.