Epsom Salts (100% Magnesium Sulfate) - SOAKII will always leave you wanting for more. Whether it's taking another bath, or simply scrubbing your feet with it, you'll always enjoy the experience! Magnesium has been known to improve sleep and stress. The mineral is also helpful in the recovery of muscles, the regulation of many enzymes within the body, and proper nerve function. KOSHER, GMO-FREE, USP38 APPROVED.