In social cognition, people use face-extracted information for social categorization and also judgments of personality, and this act can lead to possible consequences. The primary focus of previous models on social perception of faces is on social and physical facial features, which are important for researchers to understand these processes. Two- and three-dimensional models of social perceptions of faces currently exist, of which the former includes trustworthiness and dominance, while the latter includes approachability, youthful-attractiveness, and dominance as dimensions. This paper discusses social perceptions of faces through analyzing the processes in previously developed models of social perception of faces. This will include two- and three-dimension models using the relationship between the dimensions of attractiveness and trustworthiness. Future directions for research are also included. Future research should aim to develop a common computational account of various aspects of social perceptions of faces and characterize the functions of the brain regions involved in this perception.