Nioxin Advanced Thinning Pyrithione Zinc Dandruff Shampoo & Conditioner for Thinning Hair is a weekly treatment shampoo and conditioner. To be used by those who have thinning hair. Reduces dandruff and overall hair damage. Refreshes scalp and helps to promote healthy hair growth. Anti breakage, fortifying, shine boosting. Made with ingredients like Zinc Carbonate, Mint leaf Oil, Folic Acid, Biotin, Peppermint Oil, Camellia leaf Oil, and Sodium Lauryl Sulfate. The active ingredient in this product is Pyrithione Zinc. Can be used up to twice a week. Massage Shampoo well into wet hair and rinse. Follow up with conditioner. this comes in liquids form. This is a set of 6. Three shampoos each is 6.7 oz and three conditioners each is 6.7 oz.