Epsom salt is also known as magnesium sulfate. It's a chemical compound made up of magnesium, sulfur, and oxygen. It gets its name from the town of Epsom in Surrey, England, where it was originally discovered.
Epsom salt has been used for hundreds of years as a healing agent and pain reliever. Today, it's most often added to hot baths and foot soaks to reduce stress
Use 2 cups of Epsom salt for a standard-size bathtub filled with warm water.