Nioxin is a line of haircare products designed to improve the health and appearance of thinning hair. The company offers a variety of shampoos, conditioners, treatments, and styling products, all of which are formulated to nourish the scalp and promote hair growth. Nioxin products are designed to address the three main factors that contribute to hair thinning: genetics, scalp damage, and hair breakage. The products contain a variety of ingredients that work to improve the overall health of the scalp and hair, including biotin, niacin, caffeine, panthenol, and antioxidants. The Nioxin system is organized into six different categories, each of which is designed to address a specific hair type or level of thinning. The categories range from "normal to thin-looking hair" to "very thin-looking hair," and each one includes a unique combination of products tailored to the specific needs of that hair type.