Nioxin’s System 4 Leave-In Scalp & Hair Treatment for Color-Treated Hair with Progressed Thinning works to refresh the scalp and increase your hair volume. This volumizing leave-in hair treatment helps to provide thicker-looking hair by increasing the fullness of each hair strand. Nioxin’s System 4 Scalp & Hair Treatment is the final step of the three-part system, which amplifies hair texture while protecting against breakage.

If your hair is normal to thin-looking:

• For fine, natural hair: choose System 1
• For coloured hair: choose System 3
• For chemically-treated hair: choose System 5

If your hair is noticeably thinning:

• For fine, natural hair: choose System 2
• For coloured hair: choose System 4
• For chemically-treated hair: choose System 6

• After shampoo cleansing, massage onto scalp and distribute throughout the hair.
• Leave on for 1 to 3 minutes.
• Rinse well.
• Use daily.
• Use in combination with Nioxin Cleanser Shampoo and Scalp and Hair Treatment.