This is an Edgar Cayce remedy for sprains, torn ligaments, and bruising. I sprained my foot and ankle ( graceful me climbing down the cliffs to surf, I know I balance better in the water than on the land ). I used this daily and at night I wore an extra sock to keep it in place while I slept. I also elevated my foot as often as I could. Like anything consult your Doctor to make sure you haven't fractured any bones. Cayce said " Either moisten the salt with vinegar or saturate the vinegar with salt ". I applied this often, a new batch at least 2 times a day as a rub and at night as a pack.