Magnesium spray is the latest craze on TikTok. Use this product any time of day by spraying it on your feet, belly, armpits, or any other area that needs it. What does magnesium spray help with? It can alleviate sore muscles, joint pain, headaches, anxiety, and aid in better sleep. I recommend using it 1 to 2 times a day, with 1 to 2 sprays each time. If you are magnesium deficient, you might experience a tingling sensation. Be sure to test it on a small area of your skin first.