Left Over Tissue?

Hey hey! With my HS, when the flare up pops I usually get left with a hole in my armpit. However, there's this one spot that keeps leaving what I assume to be tissue. Should I put rubbing alcohol on it or leave it be? Also, what can I do to make sure it's not rubbing on stuff and hurting?

P.S. I attached pictures so be aware. So for the sight, I should've shaved first right? ☺️