Both the Magnesium Spray and the Magnesium Cream have similar concentrations of magnesium. For general aches and pains, sleeplessness, restless legs, muscle spasms/tics and stress/anxiety management, the Magnesium Creams and Sprays work equally, regardless of which scent you choose.The Magnesium Creams with Arnica are recommended for pain and inflammation that is considered moderate to severe. These products contain the same amount of Magnesium as our other products but with the addition of Arnica, they are an extra strength offering for pain and inflammation. Apply as often as needed over the area of concern.