Abstract
Hyaluronic acid (HA) is an effective dermal filler for facial rejuvenation. This study aimed to observe the clinical efficacy of HA injection for lip augmentation in Chinese patients. From May 2019 to April 2020, 70 patients with lip fullness scale (LPS) ≤3 underwent local HA injection using the "three-point" injection technique. All patients were followed up to observe the clinical efficacy, LPS, adverse events, and complications. All 70 patients were followed up for 12months. Statistically significant improvements were observed in the height of lips within 6-9months post-treatment (p<0.05). The LFS improved significantly at follow-up compared with baseline (p<0.05). Local redness occurred in two patients, and serious swelling occurred in three patients. These adverse events were generally tolerated and disappeared gradually within 1week. No other serious adverse events and complications were reported in the remaining patients. Hyaluronic acid injection can be used for lip augmentation in the Chinese population. The "three-point" technique is simple, safe, and effective and does not cause serious complications.
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