Magnesium spray: the exact same product as the soak but packaged in a spray applicator for ease of liberal application or travel. Spray magnesium liberally on the soft tissue parts of body, think bottoms of feet, inner thighs (NOT near groin area) and inner arms (just down from the armpit), or where ever the sore muscle is. Tingly sensation may occur and traces of powdery white residue may occur. We recommend doing the spray at night, before bedtime and on clothing that can be easily washed. Absolutely no additives. Imported from the Zechstein Sea from the Netherlands.