Love to get sweaty? You better GET SALTY, first. Our transdermal magnesium spray proactively replenishes the skin with the vital electrolytes you are about to sweat out – while helping your body efficiently absorb all of Magnesium's benefits: from calming effects to muscle relief to restorative sleep. We sourced our Magnesium from the Zechstein Sea, the purest Magnesium source in the world. This ancient seabed is now deep beneath the Earth’s surface, keeping its Mg source pollutant-free and incomparably potent.