Nioxin has a complete range of intelligent hair systems and specialized products,designed for hair loss and thinning and gives fuller looking hair Each with innovative skincare-for-hair technologies to help you enjoy thicker,fuller-looking hair. 70% of clients notice a difference within 30 days, which is why we offer our money back guarantee to prove this system does work! the 3-part systems- help cleanse.optimize and treat the hair and scalp environment. scalp renew helps generate the scalp surface and unclog follicles. intensive treatments- provide specialized complementary products for either areas of low hair density, or hair that is extremely dry or damaged.