R.W.
Whatever you do, keep him out of direct sunlight until it's cleared up. When my son was attacked by a dog and we had to use ointment on his face for the cuts the instructions said to keep him out of the sunlight. You can see his scars, but they aren't dark. But they would be a lot lighter had I followed the directions and kept him out of sunlight. Sounds like it's just gonna take some time, but it will fade.