Elevated Mineral Soak with OptiMSM - Ancient Minerals Magnesium Flakes Ultra combines pure Zechstein magnesium chloride with OptiMSM—an organic sulfur compound—designed to support whole-body renewal through mineral-rich bathing. | Clean, Skin-Friendly Formula - This unscented bath soak dissolves easily in warm water, providing magnesium and sulfur in a simple, non-irritating format that’s gentle on all skin types. | Full Body Soak: Treat yourself to a luxurious soak in Ancient Minerals magnesium chloride plus MSM. Dissolve a cup of flakes in warm water for a revitalizing bath. | Bath or Foot Soak, Your Way - Use for full-body immersion or localized foot soaks. Whether after long days or active moments, this mineral blend is an easy way to unwind and care for your body. | Trusted Magnesium, Now with MSM - Since 2007, Ancient Minerals has led the way in topical magnesium care. With the addition of OptiMSM, this Ultra blend offers a straightforward approach to clean, elemental body care.