Epsom salt is a mineral compound of magnesium and sulfate that has been used for hundreds of years to ease aches, pains, and skin troubles. Epsom salt baths are a popular home treatment for a variety of conditions, including arthritis pain and swelling, bruises and sprains, fibromyalgia, ingrown toenails, insomnia, psoriasis, sore muscles after working out, soreness from diarrhea during chemotherapy, sunburn pain and redness, and tired, swollen feet. While there are plenty of folk remedy claims, there arent a lot of studies to back them up. However, Epsom salt baths are generally considered safe and may offer several potential health benefits. The magnesium in Epsom salt may help relax muscles and relieve pain in the shoulders, neck, back, and skull, and may also aid sore muscles in the recovery period after a workout. Some people also claim that taking Epsom salt baths can reduce muscle soreness and relieve cramps. Epsom salt can be found online and at most drug and grocery stores, and is typically located in the pharmacy or cosmetic area.