This deceptively small bottle holds a bit of magic that is thought to be best used when you have a cold that you just can’t seem to shake and your energy is dragging. Oddly, you put it on your feet, and then cover with socks. Really. Let those eucalyptus oils work for you. Get some sleep. Drink plenty of water or hot tea with lemon.
Keep the leftover serum in a cool dry place for the next time you need it.