Berek2501 t1_j2dhqf1 wrote
Reply to comment by DrySyllabub2563 in ELI5: What makes the rust on a rusty nail different from the rust on shaving razors to where one needs an immediate tetanus shot and the other happens daily by DrySyllabub2563
No, razors go dull because the hairs will wear down the sharp edge, making it more blunt. Most razors use stainless steel, so if they're rusting on you (rust will be visible), then you're doing something wrong (e.g. using the same disposable blade for too long, not properly drying, etc.)
You should never, ever shave with a rusty blade.
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