I've found Alli learnt pretty quick to stay clear of barbed wire fences. She still comes in with a few scrapes every now and again, but nothing too serious, not since she put a hole in her side last spring. I clean them with hibi-scrub (antibacterial) and put some purple spray on it (again, antibacterial). I once borrowed some sticky yellow/orange stuff off a farmer for a mare who took a chunk of hair off her forehead. I can't remember the name, but the gel basically kept the wound clean and moist (it was going very dry) so the area could heal without scaring.
We lose ourselves in the things we love, we find ourselves there too ~Kristen Martz