Why Do Razor Blades Dull so Quickly?

The video explores why razor blades dull quickly despite being made of steel, similar to kitchen knives. It explains the manufacturing process of razor blades, focusing on the martensitic crystal structure that balances hardness and flexibility. A 2020 study used electron microscopy to observe how blades wear out quickly due to the interaction between steel and hair. The uneven structure of steel, with soft and hard spots, makes blades vulnerable to damage. The physics of hair's bendiness and its tough outer layer contribute to the rapid dulling of blades. Researchers aim to use these insights to improve razor blade durability.

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