I have found that if I get cut while shaving WTG, it reopens no matter how careful I am the next shave, if I try to go over it WTG. What works for me is only shaving XTG in that area until it heals; the blade does not snag the cut edges that way. Yesterday I got in an early morning rush to shave in 5 minutes and actually nicked the underside of my nose! Did not even notice it until evening. And I have a mustache. Can't imagine how the blade got to my nose, since I don't shave under it. Focus, focus, or pay the price!