We’re all guilty of using a small, curved fingernail clipper across the toes (and even the big toe). Whether it’s a routine habit of yours or a one-off solution when you couldn’t find a toenail ...

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Your toenails serve a purpose, which is to protect your toes. They’re made from keratin, which is the same protein that makes up your skin, hair, and fingernails. It’s keratin that makes them tough ...