Safety and Efficacy of Using MaiLi® Precise by Mean of Intradermal Injections for Correcting Perioral Fine Lines

Abstract

Introduction: Over the last twenty years, dermal fillers have become the backbone for rejuvenating the perioral area, which is one of the most difficult areas to treat. Due to the development of highly sophisticated fillers with radically different rheological properties and innovating techniques, it has become possible to correct specific regions with more natural results than before. This four-center pilot study sought to investigate the efficacy and safety of MaiLi® Precise in correcting fine-line wrinkles of the perioral area. Material and Methods: MaiLi® Precise is a recently introduced Hyaluronic Acid (HA) filler, harnessing the OxiFree™ technology, for suppleness, flexibility, and high longevity. These properties were deemed particularly suitable for correcting fine-line perioral wrinkles. All injections were performed using intradermal injections, with the fluid HA injected in a very superficial manner, resulting in the formation of very small papules at the wrinkle, disappearing within 1-2 hours. Follow-up occurred at one (T1) and three months (T2) post-injection. Treatment effectiveness was evaluated using the Global Aesthetic Improvement Scale (GAIS), as was the satisfaction of the subjects and investigators. Adverse Events (AEs) were also reported. Results: Overall, 20 patients aged 56 years on average, from four centers, were injected MaiLi® Precise into the perioral area to correct perioral lines using intradermal injections. No specific safety concerns were detected, given that AEs remained mild, were almost all resolved by T1, and were completely absent by T2. Patient and physician satisfaction were both >90% during follow-up. All physicians attributed improved, much improved, or very much improved GAIS scores at T1 and T2, indicating a marked improvement in appearance after injection. Conclusion: Based on the current study results, MaiLi® Precise was shown to be safe and provided satisfactory results from both the patient and the physician’s points of view during a 3-month follow-up.