I don't know. Are you talking about alar asymmetry or this? If the alar edge retraction can be improved to some extent through surgery, some autologous or allogenic materials can be used to pad this place. Autologous, such as ear cartilage, or dermis. Swelling, allogenic dermis, etc. can also be used. Autologous materials may indeed have absorption problems. For example, within six months or a year after surgery, some of them will be absorbed, and then they will tend to be stable. But generally speaking, the operation is only improved as much as possible, and it cannot guarantee the complete symmetry of both sides after operation. Retraction of alar margin is a difficult problem in augmentation rhinoplasty.