Teeth whitening is not just a cosmetic thing that only actors do to look good at the red carpet events. It’s importance for everyday people to whiten their teeth as well. This is because it makes it easier for other people to communicate with you.
When they see that you have a great smile, white teeth and good hygiene, they open up to you because subconsciously they think that if you can take good care of yourself, they can trust you with things. And not just that, it also pushes them to have good hygiene as well.