Naftalan oil, which we apply at Naftalan, is produced by distillation of naphthene oil. It is oil with a high specific weight, and is included among “heavy” oils. It contains little light fractions such as gasoline or kerosene, but contains a high percentage of naphthene hydrocarbons, among them steranes, compounds whose structure is similar to steroid hormones and provitamin D. The healing properties of naftalan are attributed precisely to steranes.
