For years, plastic surgeons have recommended putting ordinary petroleum jelly on post surgery wounds to limit scarring.
However, and old professional boxer had an interesting trick. When asked why all his peers had heavily scarred faces but he did not, he said that when he got a scar, he abraded it with wet sandpaper. It would form a big scab, and when the scab fell off, it left smooth skin beneath.
A similar technique is used by dermatologists for people with severely scarred faces because of acne. They use a mechanical grinder to abrade a large patch of skin, and after several treatments, much of the scarring is gone.
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