I've been SIing for some time. It's not as bad as it used to be. I think part of it is that I have really dry skin. What has helped me recently is Liquid Band-Aid. You can put it on cuts in places that a band-aid wouldn't be able to go. It helps keep away the irritation, and scabbiness/scarring that results in healing.
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"Sprinkle, sprinkle, little bar, what I wonder is a cat" - Cheese from Foster's Home for Imaginary Friends