In this Mineral Bath Tub treatment, the bath is filled with natural mineral water at a concentration of 25mg, 50mg or 100 mg sulfide to one liter. The temperature of the mineral bath is between 36 - 38 °C. (Higher temperatures are not recommended as this increases the release of hydrogen sulfide into the air). The natural thermal mineral water in Smrdáky is world famous for its effective treatment of skin diseases and arthritic conditions. The duration of the treatment and concentration of the sulfide is based upon the prescription of the doctor following the doctor’s consultation.