What makes a razor aggressive?

I'm not quite sure I understand how it works or why it helps.

I can see that having less blade exposure will give a certain level of protection. With less blade exposed, there's only so much you can actually cut yourself. What I don't get is why having more blade exposure is beneficial. I mean... the blade is either touching your face or it isn't, right? Wouldn't the ideal be a blade that just barely touches your face, and no more? Why does more exposure cut the hair better? Are there other properties that make a razor more or less aggressive?

I'm mostly referring to open and closed comb. I understand slants are a very different animal.

Let's block ads! (Why?)

What makes a razor aggressive?