Get thick and fuller look effortlessly with the Toppik Hair Building Fibers. Bid adieus to problems of hair thinning as you can easily conceal those areas with this hair building fiber. Colored keratin fibers which is identical to human hair protein is the core ingredient and it blends unnoticeably well. You can also use this product for root touch up between your coloring sessions and save frequent visits to salon. Come rain, wind, or sweat enjoy weather protection all through the year with the Hair Building Fiber from Toppik!