In addition to that dull blades, there are other possibilities. That one additional scar that I got was when I rushed the shave (fortunately it's very small and in an inconspicuous location). Then you can run over a zit or an imperfection (like in a shaving video I once saw ), your soap can dry out and create a skip (d**n that C&E soap), you can get pushed or distracted by a housemate and if you're a newb, sometimes it can be a bit difficult to get used to spikes.