How strange. I burned the top of my hand some time ago, about a second degree burn I'd guess, and was hurting far too much to get my keys and go to ER, so grabbed some MSM powder I had setting out and put it on my burn after running my hand quickly through running water. It healed with no scar, only a tiny off color on one finger, but since I'm 77 it doesn't even show. I thought it was due to the MSM but also might have been due to the drying power of the powder.
I'll keep this in mind and share it with others. Might be a darn good idea for campers and back packers too.