Epsom salt is actually not a salt but a naturally occurring mineral compound of magnesium and sulfate. Long known as a natural remedy, Epsom salt has a lot of health benefits as well as many beauty, household and gardening-related uses.
One of the most common uses for Epsom salt is treating body aches. The magnesium and other compounds work to relieve aches and pains, which are caused from tension and inflammation. Epsom salt can draw toxins from your body to relieve swelling, sprains and bruises. "