Dissolved in warm water, our magnesium chloride flakes provide the user with highly soluble magnesium chloride. Ideal for children and other sensitive individuals Effective for stress relief and relaxation Great for soaking muscles and joints Soothes and nourishes skin Product Details Ingredients: Genuine Zechstein magnesium chloride flakes (and trace minerals) One cup contains approximately 15 g elemental magnesium. Product Application and Usage Ancient Minerals bath flakes are the dry flakes of magnesium chloride and other naturally-occurring trace minerals in a convenient and economical form for utilization in baths and foot soaks. Some individuals with sensitive skin may prefer this method of application to the more concentrated Ancient Minerals Magnesium Gel or Magnesium Oil. Simply dissolve 1-3 cups or more of the magnesium flakes into a warm, but not hot, footbath or tub bath, and soak for 30 minutes or more.