Paraffin wax has a very high heat capacity, which means that it is able to absorb and retain a large amount of heat. When a part of the body is immersed, the wax becomes solid. Paraffin will not clog pores. Due to the large size of its molecules, paraffin stays on the skin’s surface and provides a barrier between the skin and air, sealing in the hydrating cream and the circulation-increasing heat, and infusing skin with its own natural moisture.