Val Monroe
Photo: Robert Trachtenberg
A: Everyone eventually develops a few ridges because as we age the body simply no longer produces smooth nail, says Zoe Diana Draelos, MD, editor of the Journal of Cosmetic Dermatology.

Keep in mind: You can buff your nails smooth, or cover ridges with an opaque (rather than sheer) polish (like OPI Isn't That Precious?, $8.50; OPI.com). for salons

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