Yo I got psoriasis on my scalp. like below my hairline its white and Im brown skinned, this is messin my game up. Yo anybody here kno what shampoo I can use to get rid of it and how often I should shampoo and should I grease my scalp after I'm done shampooing? What makes it worse is that I put on some cream to help me with my acne and it dries my skin up.