Are there any herbal or natural remedies to help relieve scalp psoriasis?

Many....and none: What i mean by this is that each person's psoriasis is so, e what unique in the type of lesions, the location of lesions, in the severity, in the % of skin involved. It is probably an autoimmune disease. There is no single rx, many topical an d medical prescription and otc remedies have been tried, and none are consistently better than other. Try deep sea saltwater and ultraviolet light.

No: There are no herbal remedies. Unfortunately ultraviolet generally will not help scalp psoriasis.