Aloe
I imagine it would probably be OK as long as you check the sugar content... I wouldn't put anything on your wound though. I was repeatedly instructed NOT to and aloe might not be sterile enough if you're grabbing a leaf off the plant and squeezing. I know when my scar was healing i was told no ointments, no alcohol, no peroxide, nothing. Just cover it loosely with telfa pads if it's oozy, and it will heal better on its own. Good Luck!