What happens when you age?

20. Miley Cyrus

Whiten your teeth. Teeth that are stained and yellowed are a sign of age, and a bright healthy-looking smile can take years off your appearance. Whiten your teeth by brushing with a whitening toothpaste twice daily, using a whitening tray or strips, or visiting your dentist for a cleaning and bleaching procedure. Avoid smoking and drinking black coffee and tea, which worsen stains. Of course, remember to floss daily.