Disposable razor blades can cost $4 a pop and last only a few weeks, but Terry has been going for 20 months on the same cartridge. And yes, he still has a face. How does he do it?

When he notices his blade getting dull, he rubs it on his forearm in the non-cutting direction for about 10 strokes. This is all you need to keep the blade honed and sharp. You can also rub it against the heel of your palm.

Contrary to popular misconception, it’s not water or rust that dulls the blades, which are often stainless steel. It’s just the fine edges getting dulled on your face (or legs, or chest, whatever you like the shave).

I’m slightly skeptical but after seeing this and finding other corroborating comments online, I’m going to give it a shot.

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