I tried to do.mine but the color didn't take
I use ammonia free chi bleach and it's fine so just make sure of the chemical ur choosing!
I would stay away from the bleach and makes sure they are ammonia free it should say on the box
Did mine when I was a few months just a wash in one hair dresser said they are fine its just perms to be careful with but just make sure your welk vented
Make sure you are in a well ventilated area and you should be just fine. If you are completely unsure call your drs office :)