TOPPIK Hair Building Fibers provide an instant cosmetic solution for visibly thicker, fuller-looking hair. These microscopic, electrostatically charged natural Keratin fibers seamlessly blend with your existing hair, instantly concealing the appearance of thinning areas and making fine hair look significantly thicker. Application is straightforward: simply shake or spray the fibers onto the thinning areas of dry hair. The fibers cling securely, offering a natural, long-lasting result throughout the day, resistant to wind and light perspiration.