Ok, I'd appreciate some input here. A few years ago it was explained to me that the main reason any razor blade gets dull is due to the oxidation. Whereas the act of cutting the hairs actually works to keep the blade sharp. (I guess sort-of like a strop? ) Well, the suggestion was to put your blade into bubbles (you know, the stuff that you put a little wand into and then blow?) to keep the oxidation from dulling the blade. When I told my father-in-law about it, he decide to give it a go. Ever since, he absolutely SWEARS by it. He keeps his (cartridge) blades for MONTHS claiming that they stay sharp and don't pull. Thing is, he's pretty darn cheap. Is this for real? Any informative feedback on this? I know that DE blades are already pretty cheap, but I'm curious if anyone else had heard this or has experience with it.