Every time you shave, the edge of your razor blade gets microscopically bent, rendering your blade dull after only a few uses. Solution: Gliding your razor.br br Can sharpening your old razor blade by rubbing it over fabric actually work?br br This device is great and its about time something like this came along. A real money and hassle saver. You can sharpen and reuse ra.br br Its VERY important, for a clean smooth shave, to sharpen your blade EVERY time. Here is tutorial on sharpening your blade for a fresh line up or shave.