Natural Dead Sea bath crystals, made from pure natural salts, are highly concentrated with 26 essential minerals from the Dead Sea including magnesium, calcium, sodium, potassium & zinc among others. These salts are claimed to soften, nourish, cleanse and refresh the skin. As a therapeutic spa bath, these salts can be effective in relieving muscular pain and stress induced tension. They are supplied in a 500g plastic jar with an airtight lid in order to keep them dry.