It increases the body's magnesium levels through soaking; soothing muscle pain, skin irritations and reduce swelling. The combination of magnesium and sulfate salts cretes the miracle Epsom salts.
when used internally it's a gentle laxative, and usually produces a bowl movement in one to six hours. Externally it relives pain from minor sprains and bruises.
A mineral compound of magnesium and sulfate, if taken orally, it acts as a laxative; as bath salts, it relieves aching muscles; and corrects magnesium deficiency in soil.