iMäse6 months ago000How long does such a cartridge last? How often do you have to replace it ?Show in original language (German)iMäse6 months ago • purchased this product+110purchased this product Helpful answerSo what is the cartridge for if you can wash it under the tap ? just for disinfecting ?Show in original language (German)Commentroger.groebli6 months ago • purchased this product000purchased this productSimply clean the razor under running water with a little liquid soap. Only rarely bathe the shaver in the cleaner. Change the cartridge when the liquid is dirty or has partially evaporated. So it lasts a very long time👍Show in original language (German)Comment