There are plenty signs of aging we see all the time, like attending your baby cousins’ graduation, receiving an invite to a high school reunion, and watching your 401(k) mature. And when it comes to your complexion, most of us are on the lookout for the telltale signs: forehead furrows, crows feet, and undereye bags. But according the experts, there are a few lesser-known and more subtle signs of skin aging that are good to know about. Take what follows as a friendly info session, not a stern admonishment. The more you know about taking care of your skin, the better it will look. Click here to learn what are some of the signs of aging skin.