Fingernails grow 3.47 millimeters a month; toenails grow 1.62 millimeters a month. Taking biotin supplements may strengthen nails and promote their growth. Avoid using nail cosmetics regularly, as ...

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"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Growing out your nails is no easy feat, especially if genetics aren’t on your side, you’re a nail biter, ...