Ancient Minerals Ultra Magnesium Oil is a next-generation formula incorporating the unique synergistic benefits of MSM with the longstanding benefits of the original magnesium oil. Topical magnesium is a convenient, optimal way to attain all the benefits of magnesium. Skin is the most efficient organ and holds tremendous potential for re-mineralizing the body. Contains MSM that aids in magnesium absorption and supports healthy joints, muscles, tendons, hair, skin, nails, inflammation relief and cellular detoxification.