What's the secret behind Shin Se Kyung's 'million dollar smile'?

As the model for Aekyung's toothpaste brand '2080', actress Shin Se Kyung revealed the secret behind her 'million dollar smile'. The toothpaste requires three steps in order to maximize its effect, and Shin Se Kyung demonstrated it all through her CF. But does she follow through in her personal life? It's been revealed that even though she has quite a busy schedule, she's very diligent in taking care of her teeth. During filming, after she ate or drank anything, she would immediately brush her teeth. The staff on set were not only impressed by her dental regime, but also by her professionalism, as she kept up a bright and cheerful attitude throughout her session. Aekyung's representative said, "After Shin Se Kyung became a model for 2080, we've received a good response from consumers. Her bright and healthy image has really been targeting the youth." Source: Kyunghang via Naver