The chin, also known as the mentum, has a significant effect on the facial appearance of a person. By undergoing a genioplasty, patients can alter the overall profile and symmetry of their face. Chin surgery or genioplasty is a cosmetic surgical procedure to improve the shape and appearance of the chin. Surgical goals include creating an aesthetically pleasing lower facial contour and establishing proportionate facial height. This may entail augmentation of a poorly projected chin or reduction of a prominent chin depending upon the clinical conditions. Conditions of chin deficiency which can be improved with augmentation genioplasty include: retrogenia, microgenia, retruded chin, hypoplastic mentum, and horizontal mandibular hypoplasia. Likewise, reduction genioplasty can be performed for overprojected or prominent chin, eg, prognathia or protruded chin. In some cases, genioplasty may be performed with other facial plastic surgical procedures such as rhinoplasty, facial contouring surgery or facelift in order to achieve desirable facial proportion.