Toppik Hair Building Fibers 75 Day helps you achieve fuller, thicker-looking hair. Colored keratin fibers blend in with your natural hair and also fill in bald spots. Its water and perspiration-resistant formula stays in place for a comfortable wear that lasts. Includes a 75 day supply. Black is ideal for black hair. | Toppik Hair Building Fibers 75 Day - Black, 0. 97 oz | Dermstore