WHAT IT IS The colored keratin protein used to make Toppik Hair Building Fibers blends inconspicuously with existing hair strands to give the appearance of naturally full, thick hair right away. WHAT IT DOES fills in thinning areas instantly. hides the loss of hair makes thin hair appear incredibly full and thick. Excellent as a touch-up for the roots between colorings ADDITIONAL INFORMATION YOU MUST KNOW For long-lasting results in any situation, Toppik Hair Fibers are resistant to wind, rain, and perspiration. Hair Fibers are compatible with all hair types and textures and come in nine shades that can be blended to match almost any hair color. Excellent for touching up roots in between hair color appointments, covering extension tracks, and parting hair. Shampoo removes it with ease. How It Operates 1. Style and dry