What is the difference between epsom salt and sea salt?

Not Medical Advice. Sea salt is produced by evaporating seawater, usually with little processing. This leaves behind certain trace minerals and elements, depending on the water source. These minerals add flavor and color to sea salt, which also comes in a variety of coarseness levels. It has the same basic nutritional values as table salt.

Epsom salts are made up of a naturally occurring mineral that is found in water: magnesium sulfate. The name derives from the town of Epsom, England; this is where the compound was first distilled from water. Epsom salts are used in baths (for relaxation and to treat minor sprains and bruises), to clean skin, as a diuretic, and for many other uses.