What are the different types of dimples? Discover the various places where dimples can form in the body and find out if these ...

Here's Why Smiling with your eyes — commonly referred to as the Duchenne smile after 19th-century scientist Guillaume Duchenne — is considered the most authentic type of smile associated with ...

Humans can produce thousands of distinct facial expressions – including 19 different types of smile, according to research by the American psychologist Paul Ekman. However, only one of these is ...