Isdin psorisdin hygiene bath gel… Isdin psorisdin hygiene bath gel is a bath care with a gentle cleansing formula for daily psoriatic skin hygiene. Specific hygiene for psoriatic skin. Allows you to keep your skin clean and protected from the peeling, redness and itching characteristic of rebel peeling states. Protects, moisturizes and softens thanks to its 18.5% shea butter and oil content. Helps relieve and soothe itching due to the action of laureth-9.