Treat thinning hair with the Nioxin System 5 Scalp treatment. If you have non-chemically treated hair that is in the early stages of thinning, then this Nioxin hair loss treatment will help improve its appearance. The SmoothPlex in this Nioxin scalp treatment helps to add moisture to your hair, provide a natural shine and make hair easier to manage. The Active-Renewal component in this Nioxin scalp treatment enhances your scalp complexion. This Nioxin hair loss treatment is formulated with vitamins that provide moisture and nourishment for your scalp and hair. The Nioxin System 5 is suitable for medium to coarse hair.