What Causes New Skin Formation On Cuts In Pubic Area?

I normally shave my pubic hair and I have cut myself few time in doing so. The problem is that some weird things have appeared after I cut my skin, it has healed but with another piece of skin over the old skin. I don't even know how to call them o compare them. It doesn't hurt and it's not uncomfortable, I think it's just the way the skin healed