For about two years I had a thumbnail splitting along a ridge. Took baking soda in water, and the thing healed. Wahoo! I also add apple cider vinegar and hydrogen peroxide to the mix, but the baking soda seemed to be the key ingredient. I drink 1/2 - 3/4 teaspoon baking soda in big glass, (12-14 oz or so) water first thing in the morning or at least one hour before a meal. I only drink it 1x per day.