In other words, you want to straighten your naturally curly hair
so it will be longer and not
curl up and look shorter? My niece does that (seems odd to me because it is a beautiful red color and it looks prettier curly than straight, but of course it's her choice!). I think she got some products she sprays on and she uses a flattening iron on her hair every time she washes it. Ask your beautician. Just don't go for a "Brazillian Blowout," they contain formaldehyde.