HONG KONG — A wide, bright smile affords instant attraction, making a person appear warm, welcoming, engaging and engaged. You will fondly remember a first meeting with a person who greets you with a ...

A wide, bright smile affords instant attraction, making a person appear warm, welcoming, engaging and engaged. You will fondly remember a first meeting with a person who greets you with a broad smile.

A smile can change everything, first impressions, confidence, even mood. It’s no wonder that teeth whitening has become one of today’s most sought-after beauty fixes. But as whitening trends multiply, ...