BetterYou Magnesium Revive Flakes contain a highly concentrated form of 100% natural, Zechstein magnesium chloride. BetterYou Zechstein magnesium chloride comes from a natural source, deep inside the Earth's crust. It has been protected from man-made pollutants for over 250 million years, ensuring its quality and purity. BetterYou Magnesium Revive Bath Flakes are an effective way of replenishing the body with this essential mineral, promoting overall wellbeing, aiding skin health and naturally relieving tired and aching muscles. Providing an energising blend of magnesium chloride, grapefruit and eucalyptus helping to revive your senses and leave your body feeling rejuvenated.