Ancient Minerals Magnesium Lotion Goodnight is a smooth, quickly absorbed emulsion of magnesium chloride and melatonin in a skin-nourishing base of certified organic oils. Ancient Minerals is fragrance free and does not contain any formaldehyde releasing preservatives. A gentler concentration of magnesium chloride than our magnesium oil or magnesium gel products, Ancient Minerals Magnesium Lotion Goodnight provides melatonin while protecting the most sensitive of skin.