Nioxin Thinning Hair System Kits come in 6 different formulas. Is your hair normal to thinning or noticeably thinning? Is the texture thick or thin? Is your hair natural or has it been chemically treated with colors? Scroll down below to find the perfect system number that best describes for own hair. Each kit comes with a cleanser that will help to remove build-up and residues that can clog your hairs follicles, a conditioner to keep hair balanced and moisturizered and a scalp treatment that contains a formulation that will help thicken hair and refresh your scalp.