Hair journey ..

I am trying to grow my hair hair out and fix the damage. I lost 100 pounds about 2 years ago and a lot of my hair fell out and I started bleaching it and dying it a lot so I have a lot of damage. My hair is very fine and has a lot of new regrowth and it’s also short now since I got a very good haircut and cut most of it off. I’m looking for some recommendations for good hair products. I have pcos so that also doesn’t help my hair. Also wondering is it better to let your hair air dry or blow dry it ? Ugh I need help!!