how to get volume in hair after permanenet straightening....

Thanks BritChick for the tip.... yeah tehy look good from the back and side its just the front ont top of my forehead thats looking flat to me...lol
Well for opti-smooth its 48-72 hours anywhere i read online, but i did read that some peopel leave it for a week to have it really settle down.... i dont think i want that... I will give it atmost 72 hours if i can, i usually have to wash my hair everyday, cant stand even 72 hours....
and I have family weddign in 4 weeks and I am really hoping they would have some volume by then.....
were you able to make any updos and other styles with ur hair afters straightening?