There was a study done on torn tissue with rabbits some years ago. Essentially a razor cut was made and the time to heal was recorded. It was found that high doses of vitamin C significantly reduced the time to wound closure.
Try table sugar, seriously. Not on the inside. Outside only. Sugar helps new healthy cells go grow, and can cut your heal-time in half.
I would put some vasiline or something close to that. That's what I was told to do after I gave birth to both my boys and I had stitches there. It pulls infection out if it is present and helps you skin stay moisturized plus it keeps urine off of it as well because it is greasy.