
A genuine smile is also known as a Duchenne smile, named after a French Neurophysiologist from the early 1800s. It occurs when the lip corners move up and the muscle around the eyes (orbicularis oculi) moves as well. Oftentimes you see wrinkles around a person’s eyes. This is often described as a “twinkling” or “sparkling” in the eyes.
Thank you to the many people who submitted their best smiles for our April Smile Challenge!