USP grade Epsom salt, also known as epsomite, is a naturally occurring mineral compound of magnesium sulfate found in mines and limestone caves. Epsom salt has been used for centuries for its therapeutic benefits in bath and body soaks. Its origin can be traced back to the town of Epsom, England, where it was discovered in the 17th century. Epsom salt is known for its potential health and wellness benefits, including relieving muscle aches and pains, reducing stress, and improving sleep. It is also a good source of magnesium, a mineral that plays a vital role in various bodily functions.