I diluted 1 tsp of ACV with 1 tsp of water last night and put it on a dry spot on my own hand last night. It stung a little, so I put another tsp. of water in and tried it on one of my son's feet. He started to cry so I quickly put his foot under running water - which he thought was funny. :)
This morning, I tried 1 tsp ACV, 2 tsp water, and 1 tsp hydrogen peroxide. When I put this on the dry spot on my hand, it didn't hurt...but the spot on my hand is no where near as raw as my poor baby's feet. So, I tried the same foot as last night and he cried. Again I rinsed his foot immediately. Then when I looked at it, I could see the tiny bubbles from the peroxide.
I am going to keep at it and see if just that few seconds before I rinse it off will make any difference. I may try adding another tsp. of water, but I don't want to dilute it so much that it is ineffective.