What's the best shampoo or treatment to use on itchy, scaling psoriasis on the scalp?

T/Gel or T/Sal: For otc shampoos, neutrogena t/gel, t/sal, tar shampoos, head & shoulder, selsun blue/brown/gold are better than others. But prescription shampoos ordered by derm surely are more powerful. Adding strong cortisone scalp liquid/solution is necessary, sometimes, particularly for sever scalp psoriasis.

Shampoo: Try neutogena t gel or t sal or dhs tar or dhs zinc shampoo.