Tom Bull Hair Building Fiber is a natural product that is available in a range of natural shades. Made of colored keratin protein, our hair building fibers blend seamlessly with existing hair strands to instantly create the appearance of naturally thick and full hair. Our hair building fibers are perfect for instantly filling in thinning areas and concealing hair loss, making fine hair look completely thick and full. It's also great as a root touch-up, Suitable for all hair types and textures, our hair fibers can also be used for part lines, covering extension tracks, and touching up roots between hair color appointments. If you're looking for a natural and effective solution to hair loss and thinning, Tom Bull Hair Building Fiber is the perfect choice for you. Our hair fibers will give you a natural-looking full head of hair, providing you with the confidence boost you need.