Small, circular, white flecks spaced across the entire nail are pretty common and usually caused by some sort of minor injury.
Nail cells are actually round, white and opaque, but flatten out and become transparent as they grown out. It’s when there is damage to the skin at the base of the nail plate that the cells retain their white appearance.
There’s no need to worry or seek out a solution. Nails naturally repair themselves in a week or two, so as they continue to grow, the spots will grow out, too.
In the meantime, consider wearing an opaque polish if you don’t like their appearance.
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