What hairspray should i get to keep my hair straight?

i realllyy neeed help on thiss. whenever i straight my hair it gets wavy after a while. i hateee when i go outside in the wind after straightening my hair, cause it gets all wavy in the front. does anyone know of a hairspray that would keep my hair straight and smooth? i have some hairsprays but they make my hair kinda tangeled and hard in texture. pleaseee someonee helpp. thanks!