After seeing pictures of Lindsay Lohan when she was sentenced to 90 days in jail plus rehab this past July, many people raised an eyebrow at her appearance. At just 24, she looked swollen, sallow, exhausted-older. Granted, the woman has had a hard couple of years. But even those without addictions and ankle bracelets are at risk too. Many of us are so busy obsessing over little lines that we ignore other signs of aging that can be prevented or repaired with a few easy adjustments. So what could be wreaking havoc on your face? Here's what to watch out for, along with no-brainer ways to turn back the clock.