In its salt composition, the Dead Sea is quite different from all other seas on earth, and it merits special attention. While other seas have a salt composition containing 77% sodium chloride, in the Dead Sea it is around 25–30%, while its share of magnesium salts is as high as 50%. The Dead Sea has a large number of trace elements. These include elements present in sea water at less than 1 mg per 1 kg of water (copper, zinc, cobalt, etc.). Another feature of Dead Sea salt is its sulfate and sulfide ion content, which gives it its distinctive sulfurous odor and pronounced therapeutic and prophylactic effect. It is precisely this difference in the ion content of the salt that explains its applications and indications.
The healing properties of the Dead Sea’s waters have been known since ancient times. It received its striking name in antiquity because with its waters consisting of 30% salt and minerals, it has practically no living organisms.