The application of heat to a specific area of the body through the use of paraffin wax. The area is quickly immersed in heated liquid wax and then withdrawn so that the wax solidifies to form an insulating layer. The procedure is repeated until the layer is 5 to 10 mm thick, and then the entire area is wrapped in an insulating fabric. The technique is used primarily for clients with arthritis and rheumatism or any joint condition.