★★★★☆
I had an ingrown toenail that had been painful for about 3 days. Not even doing this for the toenail but I soaked my toes in apple cider vinegar for about ten minutes on each foot. A few days later, it crossed my mind that I no longer had the pain from the toenail...
As a side note, I did not even use the organic version, just simple ACV. I can't say that it cured mine but I have not had any pain since so I will give it the credit.