Hyaluronic acid rhinoplasty is a type of injectable rhinoplasty with the advantage that no incision is required and the back of the nose can be augmented by injection only. However, hyaluronic acid is a polymer of mucopolysaccharide that will be completely metabolized over time and will not last long, requiring repeated injections to maintain the effect. How long does hyaluronic acid really last after rhinoplasty has a lot to do with the material of hyaluronic acid. Hyaluronic acid currently on the market is divided into two kinds, one is the commonly used small particles of hyaluronic acid, the maintenance time is relatively short, about 0.5-1 years. The other is the large particle hyaluronic acid, which has a relatively long maintenance time, reaching 1.5-2 years. However, the specific choice of hyaluronic acid should be decided according to individual needs. If one only wishes to get short-term effects, the candidate can choose small particles of hyaluronic acid, which are absorbed more quickly. If one wishes to maintain long-term results, the candidate can choose large particles of hyaluronic acid. In addition, the maintenance time of hyaluronic acid rhinoplasty is also related to the patient’s replenishment of hyaluronic acid injection. If a candidate injects hyaluronic acid several times and pays attention to maintenance after the operation, the rhinoplasty effect can generally be maintained for a longer period of time.