My hair is soo gross! Please help!?

Im asian. My hair is black, thick and curly. When I dont wash it for like 2 or more days, when I take it out, its acceptabel but as soon as i brush it it goes wild! like really booofy and puffy!!! What can I do to make it nice??/ like should I perm it or would that make it even more crazier?? I've never worn my hair in a ponytail because when i do it goes realy spastic but i've always wanted to wear a pony tail to scoool..im trying to use fructice de frizz serum but its not really working! please help!