A fake smile, also known as a social smile or a Duchenne smile, is a facial expression that resembles a genuine smile but is produced intentionally and consciously rather than as a natural response to positive emotions. Fake smiles are often used in social interactions to convey friendliness, politeness, or to hide negative emotions.
Fake smiles can be beneficial in certain situations. For instance, they can help to create a positive and welcoming atmosphere, defuse tense situations, and make others feel more comfortable. Additionally, fake smiles have been shown to have some of the same physiological benefits as genuine smiles, such as reducing stress and boosting mood.