M21, Tired of SLS Free Shampoos damaging my hair, need reccos

My hair used to be non frizzy or dry, until I started using SLS free shampoo every alternate day on dermat's prescription. Now my hair is dry, frizzy, and gets tangled every time, so much that even the comb gets stuck in it. Also my scalp got flaky. Planning to switch back to shampoos with sulphates, but not sure which one. I guess this sub is the right place to ask reccos for this.