That's a sensible thing to ask, as many people will overlook variables that should have been considered, but no, I do not use aftershave, and I have never used it, not even once.

I think cartridge/electric razors provide an excellent breeding ground for bacteria, which is why I believe whiteheads are common after such use. I recall a fellow student in college complaining of the same thing. I do not recall what he shaved with but I'd bet my house it wasn't a straight razor.