Many of the most effective psoriasis treatments are topical and a smooth scalp will make the application much easier. I don't have it on my scalp but on my palms and soles of my feet. The tropical treatments are very efficient too at least for me, I can go weeks or even a month or two depending on the weather between flare ups. They also have an injectable, Kenalog, that will supress it for even longer but sometimes has a bad rebound action at the end.
