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Thick, yellow toenails left so long they split and crumble. Nails so misshapen they dig into the skin, causing infections. Or, in the most severe cases, curling into what we call ‘ram’s horns’ that ...

The four little words that make the world spin, “I need a manicure!” never ring quite as true as when you glance down at your fingernails and notice that all of the sudden they’re tinged yellow. Eek!

Every product on this page was chosen by a Harper's BAZAAR editor. We may earn commission on some of the items you choose to buy. Answer: Denture cleansing tablets, hydrogen peroxide and Crest ...