TopCare Epsom Salt Soaking Aid is a multi-purpose magnesium sulfate product commonly used for soaking to help relieve minor muscle aches, soreness, and discomfort, as well as for use as a saline laxative when taken as directed. It dissolves easily in warm water to create a soothing bath soak that helps relax muscles and refresh the body, and can also be used for foot soaks and minor sprains.