Considering Brazilian blow out but only for frizz control not straightening. Do you lose your curl?
A brazilian blowout is damaging. The first time you do it, your curls will loosen, and if you do it more often, you will lose your curl. I have a post on this in the keratin treatment forum. These destroyed my hair.
Plus, you're putting formaldehyde very very very close to your brain. Do you really want to do that? :)