0smile May 2026

Researchers have identified up to 19 different types of smiles, though they generally fall into three categories: reward, affiliation, and dominance.

Used to show friendliness or comply with social norms, this smile moves the mouth but typically does not reach the eyes. 0Smile

This is the "gold standard" of authentic enjoyment, characterized by the engagement of muscles around the mouth and the eyes (causing crinkling or crow's feet). Researchers have identified up to 19 different types

Here is a comprehensive guide to understanding, practicing, and improving your smile. 1. The Science and Types of Smiles 0Smile