As you prep your skincare regimenย against another harsh winter, donโ€™tโ€”and we canโ€™t emphasize this enoughโ€”forget about your fingernails. They’re easy to overlook, but your nails do a lot to serve your overall health, which is why you should take good care of them.

โ€œIf the appearance of the skin is a window into a personโ€™s internal health, the nails are at least a porthole,โ€ says Tyler Hollmig, M.D., director of dermatologic surgery and laser and cosmetic dermatology at the University of Texas Dell Medical Center.