Too little of a columellar show can appear as a retracted columella. In many Asians as well as African Americans who do not have a strong nasal tip projection the columella seems retracted.
During Retracted Columella Rhinoplasty, the columella can be augmented with a strut cartilage graft which is fixed between the medial crura, in front of the caudal septum. In Asian Rhinoplasty this is often complemented with nasal dorsum augmentation using a nasal implant which has a columella extension.
The columella can also be augmented without surgery, and with non-surgical injection of fillers!