What is Epsom Salt? (heptahydrate sulfate mineral epsomite (MgSO4·7H2O), 9.8% Water soluble Magnesium (mg), 12.9% Sulfur (S))
What Are They?
Despite the name, Epsom salts aren’t like the stuff you put on your fries. They’re called salts because of their chemical structure. The “Epsom” part is a place in England where they’re found in natural springs.