What is a parafango pack
Parafango is a combination of dry mud, usually used from a local source as in Piešťany, and pure hard paraffin and paraffin oil. The mixture is melted and heated in a special unit, then applied to the problematic area of the body in a 1-cm-thick layer, just as it begins to harden at a temperature of between 38-45°C. The intensity of the heat is slightly lower than of the pure paraffin, making it a more patient-friendly treatment. 

How a parafango pack helps
The local application of the heat relaxes the muscles, causing spasm release, easing chronic pain and supporting the healing and nutrition of the tissues. It also has sedative and immunobiological effects.