The hypertrophy, widening and collapse of the alar, accompanied by the phenomenon of hypertrophy of the alar and low bridge of the nose, is usually determined by genes, which is a problem that many Asians will have, resulting in a flat face and no three-dimensional sense, which can only be solved by medical beauty and plastic surgery.

Nasal alar reduction can be divided into external alar and internal alar. For the alar is not particularly wide, we can do alar retraction, that is, we can narrow the alar and nostril by suture, without any incision and external suture, and without recovery period. For the alar nostril is wide and obvious, the general doctor will consider removing part of alar nasal sill tissue to narrow the nostril, and it will take 7 days to remove the thread, and the nasal floor may leave an incision scar.