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Nioxin's System 4 treatment is a specially formulated hair care solution for natural to visibly thinning, chemically treated hair. As an essential component of the Nioxin hair care system, this treatment aims to strengthen hair resilience, improve the texture of fine hair and create an environment conducive to healthy hair growth. Applied directly to the scalp, System 4 works in synergy with the other products in the system to promote stronger, denser, more resilient hair.
After using Nioxin System 4 shampoo and conditioner, apply the Scalp Treatment to the scalp and hair, then gently massage to promote absorption. Do not rinse, as this treatment is specially designed to stay in place and act long-lastingly throughout the day.