Eli5: Why do shaving razor blades become dull?

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I saw a video once of how a razor blade starts getting dull after just one shave. It doesn’t seem like it should be the case if it’s literally just cutting hair.

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Anonymous 0 Comments

It’s because they are engineered to do so. If razor blades never dulled, then you’d never have to buy more, and the company would go out of business.

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