This is my original product that launched ApotheKerry and changed my life, as far as helping optimize my health. I have had so much great feedback about this product and is great for leg cramping & restless leg because there are many layers of muscle in the leg and this product penetrates deep. I do recommend getting a spray to add an extra dose of magnesium daily or Mag Nificent, because so many issues are a direct result of low magnesium so the more you increase your magnesium, the less symptoms and signs that lead to dis ease, then disease and other conditions. Topical Magnesium should not be worn in direct sunlight, it will cause sun burn. During sunny days apply under clothes to areas such as belly, upper thighs, bottom of the feet, palms of the hands, shoulders. At night you can apply it anywhere. Great Places for application include the belly, bottom of feet, palms of hands, major areas of lymph, anywhere you are having pain, directly on your leg cramps. For migraines put on stomach,neck, temples and third eye. This product was created for your entire body, except your face. My sprays can be used on the face as well as head to rid calcium build up in hair follicle.