This falls in line with the cleaning of the Philips razors thread, but it also carries over into foil razors, as well. A clean foil/clean razor heads will not only improve your shave, but it will also likely extend the life of the foil/razor heads, as well as the razor. Heads/foils that aren't clean result in the razor having to work harder. Keep them clean. This is especially easy to do with the modern shaving systems available. In most cases, you simply need to put the razor inside the cleaning station, press a button and cleaning is handled for you. Do it. Your razor and your face will thank you.
Jim
Jim