A study has shown 28 per cent of British people smile at someone at least once a day.
Ahead of World Smile Day on Friday (06.10.17) White Glo ran a new survey and found that more than half of Brits smile in response to them receiving the same gesture from another person.
However, the survey has revealed that 20 per cent of people worry that they don't smile enough.
The research also looked into why people may not be smiling as much as they would like, and 33 per cent admitted they do not flash their pearly whites because they are unhappy with their teeth.
White Glo's dental expert Dr Georgio Sotriopoulos said: ''If you are happy with how your teeth look, it will show in your smile.
''The good news is that there are so many options available which can make a real difference in a short space of time.
''The research shows a huge number of people are unhappy with the colour of their teeth, something that can be fixed without visiting a dentist.
''Choosing an at home whitening kit which contains the same ingredients the professionals use is a great place to start.''