Why rinse the blade?
While you are shaving you see there's like those three or five little blades, and the hair gets caught in between the blades, as well as there is a little bit of the shaving cream. So, when you are using a good shaving cream that is a lathering shaving cream it's not going to clog up your razor; it will wash off easily. But, what you do is you run your blade once or twice across your face, and it just cannot pick up some of the cream, it gets some of the hair stuck into it. So when you rinse it and you tap it very lightly on to the sink, you are clearing out anything and the blade is back to being totally clean to go for another run.