I was given a spray from my vet called Derma Gel and it has been amazing. He told me it would help regrow healthy skin more rapidly and promote regrowth of hair in the original colour. I must say I was soooo impressed, and I keep it on hand now. Maybe ask about it? It comes in a spray or a gel, but I prefer the spray as you don't have to get your fingers in the wound, and it forms a very thin barrier over the wound.