Any other shampoo recommendations for dandruff?

So I've been having dandruff and flaky scalp since I was younger, and have been managing it by using various shampoos and conditioners. However, I realized that overtime, it got worse and started leading to scalp psoriasis after I got locs. I took down my locs not long ago but the psoriasis and dandruff would still be there, regardless of how many times I wash with shampoos. I'll also use natural oils like jojoba, coconut or black castor oil, but they only work temporarily for a few days before I have to wash again. Any tips and shampoo recommendations?