Experiences with chemical straighteners??

So I have wavy hair, I wanted to try and save myself time and chemically straighten it, well bad move. My hair is now frizzy beyond anything i've ever seen, feels like 'mush' when when, cotton candy when dry. I've tried almost every deep conditioning treatment, I need help, stylist says we can cut it but considering my hair is chin length, I would have nothing left! ANYONE please help, any advice, product recommendations anything. Thank you.