I am having a problem w/the cheapie hairspray I'm using (which I'm throwing away tonight). I spray my hair a lot b/c I don't want to get lice in school. They hate dirty hair, so I always spray the heck out of it. Well, now the crummy spray that I'm using has left build up on my hair and I don't know how to get that buildup out! I've tried dandruff shampoo but the residue is still there. Any suggestions on how to break it down and get it out?!