BetterYou Magnesium Sleep Flakes contain a highly concentrated form of 100% natural Zechstein magnesium chloride (47%).BetterYou Zechstein magnesium chloride comes from a natural source, deep within the earth.Protected from artificial pollutants for over 250 million years, ensuring its quality and purity.An essential part of any bedtime routine, the intense muscle relaxation experienced when using BetterYou Magnesium Sleep Flakes is unparalleled.How to use: Bath: Add 250g of Magnesium Sleep Flakes (approximately 2 cups) per bath.Lie back and relax for 20 minutes. Increase the amount for a more intense experience.Foot bath: Add 150g of Magnesium Sleep Flakes (approximately 1 cup) to about 5 liters of water, enough to cover the feet.Sit and relax for 20 minutes.