Equate Epsom salt, also known as bath salt, has been used for hundreds of years to treat a variety of different ailments. It easily dissolves in water, which makes it excellent for soothing sprains and sore muscles in a bath soak, bronchial asthma, and migraine headaches. In addition, it has been known to heal cuts and reduce soreness from childbirth. and has high levels of magnesium, which makes it useful for occasional relief of constipation when used as a saline laxative. This 8lb bag is resealable, making it easy to store until next time. Get soothing relief with Equate Magnesium Sulfate USP Epsom Salt, Scent Free.