The foundation of a great smile is health, which can be maintained at home for just the cost of basic supplies.

You can improve how you look in photos by training your facial muscles to create a more genuine "Duchenne" smile—one that reaches the eyes.

: Brush twice a day for two minutes each time, and visit the dentist twice a year for cleanings.

: Use a soft-bristled brush with gentle circular motions to protect enamel and gums.