It is also called “alar rim augmentation”. Clinically, there are two common causes for nostril exposure. One is attributed to the alar and nostril slanting upward due to an exceedingly short or upturned nasal tip (short nose), which could be modified by open (Korean-style) rhinoplasty or nasal tip elongation surgery (open tiplasty). The other is attributed to simple alar rim insufficiency or retraction, leading to overt exposure of the nostrils from the frontal view, and gives the top of the nostril the appearance of a triangle. However, because the nasal tip angle and length of some patients are still within the normal range, the problems cannot be fully corrected even by open rhinoplasty or upturned nose correction, so further alar rim augmentation or repair is necessary. At present, there are no standards for defining nostril exposure. However, if it is beyond the subjective acceptance or even to the resent of patients, nostril exposure correction is considered. This surgery is mainly aimed to fill the skin defects of the superior alar rims and is conducted by collecting the auricular cartilage with a skin structure by “composite auricular cartilage transplantation,” which is then emplaced at the medial side of the nostril via an incision at the inner margin where the nostril is exposed to extend the alar defect outward and posteriorly via the mass and volume of the auricular cartilage and achieve the ultimate objective of reducing the nostril exposure. Nevertheless, because the regional skin is difficult to stitch and very tight and the autologous absorption of the auricular cartilage is relatively high, Dr. Chuang mostly conducts certain degrees of “over-transplantation.” Patients will feel lumps or bulging at the medial side of the nostrils during the early postoperative period, which gradually become smooth and soft due to the partial absorption of the cartilage within 3–6 months and appear natural and normal. In addition, if the patient has a concurrent enlarged ala nasi and nostrils, alar reduction will be simultaneously performed to garner better results.