Therapro Mediceuticals X-Folate Persistent Dandruff & Psoriasis Treatment Shampoo Therapro (X-Folate) Exfolate Shampoo for dandruff and psoriasis contains FDA approved formulations for treatment of common scalp and skin problems: Shampoo for treament of dandruff and psoriasis on the scalp Helps control flaking, itchy scalp Soothes inflammation and irritation of the scalp Safe for color treated hair and rinses 100% clean Therapro X-Folate is the perfect psoriasis shampoo or dandruff shampoo.