Can fasting help with a keloid?

That depends on how big it is. It's going to improve it. I would also add some good quality vitamin E oil to rub it into that keloid to help break down some of the scarring. There's another enzyme called sort of peptase. That may create some positive things because that also helps you break down excessive scarring and fibrosis in certain parts of your body. But these are just things to look at and just research more to see if that could work for you.