The therapeutic effects of bathing in the Dead Sea were well known even in times of antiquity. Galenus stated that this salt water was good for the treatment of arthritis, eczema, muscular pain, rheumatism, psoriasis, to relieve tension, relaxation and develop smooth, silky skin.
The Jewish Roman historian Flavius, wrote 2000 years ago-"The Dead Sea cannot be praised too highly" travelers take as much of this salt as they are able to home with them because it heals the human body and is therefore used in many medicines.
The waters of the Dead Sea are unique compared to other seas and lakes primarily due to the high concentration of salts reaching 27% compared to 3% in ordinary sea water. The composition of the Dead Sea salts is also unique. Whereas in ordinary sea water sodium chloride (common salt) is the major constituent (about 80% of the total salt content) the Dead Sea on the other hand contains a considerably smaller proportion of sodium chloride, the balance consisting of magnesium, potassium and calcium chlorides, and a comparatively high concentration of bromides. It is believed that the therapeutic properties of the Dead Sea are due in large extent to the presence of these other salts, mainly those of magnesium, potassium and bromide.