The Toppik Hair Building Fibers are a revolutionary hair care product that instantly adds volume and thickness to the hair. Made of colored keratin protein, these fibers blend undetectably with existing hair strands for natural-looking results. This Hair Fibers are easy to use and provide an affordable solution that creates the appearance of naturally thick, full hair. Whether it's windy, rainy, or humid, Toppik Hair Building Fibers will last for a long time. With Toppik, you can get thicker, fuller hair in just minutes!