Magnesium is best absorbed and utilized by our body when applied topically. This spray can increase your magnesium levels to improve your overall health and well being. To use: Shake gently and apply to bottom of feet, or wherever you desire. Magnesium can sometimes irritate skin when you first start using it. If this occurs, use on bottom of feet for less sensitivity. 2 oz. spray bottle. Naturally made by a local business.