This shows how to sharpen multi-blade razor blade cartridges after they have exhausted their normal usefulness... the inventor of this technique, Terry Pundiak of Easton, PA , has been using the same cartridge for over 20 months, continuing having close, smooth shaves with no facial nicks.
When a razor cartridge starts to give you that sharp, nicking feeling that it is time to replace it, simply, slide your razor up your forearm, backwards, with moderate pressure about 10 times. It has worked for me for the last 3 years.
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