Its less expensive, and less upkeep if you just use a spray volumizer, like big sexy, root lift. then blow your hair out over directed the opposite way. Perms need to be done every 12 weeks in order for it to not look flat on top. also they stink, and you always chance it with getting frizzy hair, there's not promising results. with really fine hair, it might not take or it might be too poofy. I wouldn't do it.