To smile or not to smile: The role of facial expression valence on mundane and luxury products premiumness

A smile is an essential professional requirement for sales assistant and endorser as a means to give a stunning impression and to please customers. However, luxury brands, engrained as consumption symbols to create social distance, tend to act oppositely: they prefer endorsers and sales assistants in a neutral face rather than a smiley face. The purpose of this study is to investigate how and why facial expressions valence impact luxury product price estimation. A pilot study and three studies were conducted to test the hypotheses. We first test whether neutral faces combined with luxury goods can make the customer feel distant. Then we conducted an imagination task to assess whether the interaction between the facial expressions of sales assistants and product type affects product valuations. Further, we adopted an experiment to explore the proposed mechanism, social distance. The results show that commercial models and sales assistants' neutral facial expressions increase perceived social distance, further enhancing the valuations of luxury goods. In contrast, they estimated mundane products higher when they saw a smiley face than a neutral or a negative face. These findings contribute to the literature on the impact of facial expressions in advertising and services for luxury and mundane products. Our findings have potential implications for brands to manage their images and convey their value through employees’ facial expressions according to brand positioning.