When sea water evaporates, it leaves behind sea salt. This sea salt differs from regular table salt because it contains numerous healing minerals like magnesium, calcium, and potassium. Our bodies contain the same concentration of nutrients and minerals as sea water, which is why sea salt is so helpful in balancing, protecting, and restoring skin tissue. In fact, the National Eczema Foundation recommends using sea salt soaks to relieve red and itchy skin associated with the condition.