Had the exact same problem when i was younger. To make it healthy, don't use products which can harm it e.g. hairspray and DEFINITELY don't use any heat on it, that just makes the ends split and makes it thinner and shorter. Personally i found that when washing my hair, if i massaged my scalp whilst doing so it make my heair grow longer, faster and make it so much healthier! :D
As always, it really depends. I don't know why you would want to straighten thick, curly, healthy hair when it is so beautiful and chic anyway.
all you have to do is perm it and wash it.
When she was a bit younger it was really curly, but I think she straightens it now :)
You really cant make relaxed hair curly, you have to have natural curly hair. Don't try anything you can damaged your hair really badly putting to many chemicals in it, trust me I have tried
Lol, its natural! it turned curly when he turned 12.
Yes...I think
get a perm.
Eh, not really...unless you straighten it every day...and I mean Really straighten it.
OIL
Yeah if you straighten it. If you just leave it curly. Not really.
"Scene" hair is rod-straight, so no...but there are cool hairstyles you can do with curly hair.
Layers and short will help. If it is curly to begin with, this will really make it curly.