These salts are imported from the waters of the Dead Sea. They are unique in that they contain 27% of various salts as compared to 3% in normal sea water. Further, while sodium accounts for approximately 80% of the salt content of normal sea water, it comprises much less of the salt total in water from the Dead Sea. The balance of the salts in Dead Sea water are magnesium, potassium, calcium chloride and bromides. All Natural.