An ingrown toenail is a common ailment that affects millions of people around the world. Luckily, it’s easily treatable by using salt-water. Stanford University researchers found that soaking your feet in salt water can heal ingrown-related infections in just four days. Salt is antibacterial and anti-inflammatory.To make use of its benefits, add just a teaspoon to a cup of warm water, and then add it to your foot bath to use twice a day until the infection is gone. Additionally, dentists recommend gargling with salt water to treat and prevent gingivitis. Doing this can also help when you’re suffering from a throat infection.