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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Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...