Used to "dry shave" with a Mach 3. Used to go through a cartridge in about 3 shaves.

For Christmas, the hawtest woman on the planet went to
The Art of Shaving and got me their starter kit - a badger hair brush, jar of shave cream, pre-shave essential oils, and after shave balm. Now, shaving 3x a week, I get a cleaner shave faster (I'm not spending as long knocking stubble clogs out of the blades) and my cartridges will last 3-4 weeks, on average.