Thanks for the advice! It is normal neosporin - I wish I could say that I checked that before putting it on him yesterday, but I didn't check that until after. I really ought to pay more attention -_-"

I'll dab a bit on him each day and see if it starts to get better.

In the meantime I'll see if I can think of a way to prevent him from hurting himself.. he loves shoving his head in those gaps.