By Dr. Josh Zeichner
Ever try to shave using a razor blade that probably should have been thrown out a few shaves ago and say “never again”? (Me too.) Without fail, that last shave wreaks havoc on your face. So if you begin shaving and feel the razor pulling on your skin, you should stop and replace the blade -- immediately.
Razor blades are designed to lift hairs away from the surface of the skin and easily cut through the hair without much force. When the blades dull, however, more pressure is needed to do the same job. Shaving with a dull razor doesn’t come without consequence.
Shave with a dull razor and you may face: