It's not revolutionary news that smoking wreaks havoc on your body in different ways. More often than not, however, the focus of anti-smoking campaigns is on your internal health, citing emphysema, heart disease, and lung cancer, to name just a few consequences.

While the superficial effects may not be as lethal, appealing to people's sense of vanity can have a powerful effect as this clever gallery below shows. Twins, only one of whom smokes, sit side by side, showing the profound damage smoking can cause to your face, hair, and teeth.