BetterYou Magnesium Sleep Body Spray delivers a high concentration dose of 100% pure source Magnesium Chloride per application, to support relief of muscle tension and promote better quality sleep. Clinically tested for absorption, it works directly through the skin for targeted daily support. - Fast absorption into the bloodstream - The transdermal format means it doesn't need to be broken down by the gut - Supports nervous system function, relaxation, and sleep quality - Supports energy production and helps reduce fatigue - Aids normal muscle function, performance, and recovery.