Hydro jelly paraffin wax . The paraffin wax bath is a therapeutic restorative procedure in which a moisturizing treatment is applied to the hand or foot before a thick layer of paraffin wax is spread over it. To maintain the heat for even longer, the foot is then placed in a warming mitt. This heat helps the moisturizer penetrate deeply into the skin and relieve musculoskeletal discomfort while promoting blood flow.