Viviscal hair filler fibers are available in natural looking hair colors to suit everyonenViviscal hair filler fibers instantly volumize the appearance of your hairnThey are easy to apply, just tap it on for instant coverage they last in wind and rain but wash out easily with shampoonWork all hair types and are for both men and women.nThicker looking hair in seconds Viviscal hair filler fibers contain microscopic, electrostatically charged fibers which stick to hair and create a volumizing appearance for both men and women. They instantly make thinning hair look thicker and fuller.