Your daily skin care regimen and holy grail products may have shaved five years off your appearance, but if you haven’t been as meticulous in looking after your neck, there’s a good chance it’s been displaying everything your face has been trying to hide all along. Think wrinkles, fine lines and sagging, crepey skin.

How Aging Changes Skin

In your 20s or 30s, keeping wrinkles and fine lines at bay...