1. Congenital or acquired nasal deformity. Nose sizes on both sides are different, or nostril problems caused by trauma are suitable for nostril correction.
2. Because of the problem of the alar, the nostrils are not beautiful. For example, when the alar contracts, the nostrils will look up. In this case, it is necessary to correct the nostrils and correct the alar. So that the nose will be in a perfect state after the operation.
3. The nostrils are flat and big. Usually the nostrils are round, but some special ones are flat and close to the horizontal oblate, which is very common among people in southern China.