How to tame messy hair?

im so sick of my hair ._.

it's straight - not frizzy at all.

but it acts like frizzy hair o.O after i brush it, it takes 5 minutes and it's a total mess again.

i guess i like it to an extent - one could say it adds volume. its totally flat after i brush it.

most people think i backcomb (tease) my hair, cause its so messy D:

are there any products that can tame it? :D i've tried this spray leave-in conditioner but it didn't exactly work :/

How to tame messy hair?

Fructis has really good hair product, and also John freida are both wonderful...