The nail version of wrinkles? Ridges. As you age, the nail matrix (the area of cells under the base of nails that's responsible for nail growth) can cause tips to grow more slowly and produce vertical ridges. Your Rx: Apply an ample base with tiny fibers to fill in valleys and even out surfaces. Your nails may also become thicker; if this causes discomfort, swap your daily moisturizing oil or ointment for a lotion with exfoliating lactic acid to hydrate and help dissolve the upper layer of keratin proteins.Nail Tek Foundation III Ridge Filler, $10; sallybeauty.com.
Amlactin Cerapeutic Restoring body lotion, $19; drugstore.com.Read MoreLess
Manicure Makeover: Secrets to Strong, Smooth Tips at Every Age