维持时间的特点

collagen会被人体逐步代谢，因此injection rhinoplasty的效果通常是暂时的，maintenance time因人而异，多数在数月区间，需定期补充。

影响时效的因素

Individual metabolic speed, injection dose and level, living habits, etc. will all affect the maintenance duration. It is more suitable as a short-term reshaping or pre-operative preview than a permanent change.

Differences from surgical methods

若希望相对稳定持久的鼻型改变，手术类nasal synthesis是另一路径。两者目标不同，应结合自身需求选择。

Injection projects also have risks, so please operate them by qualified personnel in formal institutions.