How do I get my natural super curly hair back after over dying and bleaching my hair?
I honestly don't think you can. It sounds like you hair has been permanently chemically altered. The only way to get your original texture back is to grow it.
I think vjackson is right. You'll probably just have to wait until fresh hair grows in. Try deep conditioning and using hydrating oils but I'm guessing you'll have to wait for new hair.