An Open-Label, Multicenter, Evaluator-Blinded Study to Assess the Efficacy and Safety of a New Hyaluronic Acid-Based Gel Product for Lip Enhancement.

BACKGROUND: A stabilized hyaluronic acid (HA)-based lidocaine-containing gel of nonanimal origin has been developed for lip enhancement. OBJECTIVE: To evaluate the efficacy, safety, and injection procedure of the HA gel in subjects seeking lip enhancement. METHODS: Thirty subjects were treated in the upper and lower lips. Retreatment was offered at 3 months. Efficacy was assessed over 9 months using the Global Aesthetic Improvement Scale (GAIS), the Medicis Lip Fullness Scale, and a subject questionnaire. Safety was assessed by a 14-day subject diary and recording of adverse events (AEs) during the whole study. RESULTS: Over 9 months after treatment, 86% to 97% of subjects and independent evaluators assessed both lips as improved. At all study visits, 72% to 93% of the subjects were satisfied with their lips and ≥96% reported that their lips had a natural look. Most AEs were mild-to-moderate local injection site reactions. CONCLUSION: Lip enhancement with this HA-based gel generated high subject satisfaction and natural-looking lips. The effect lasted for up to 9 months according to the GAIS ratings by subjects and independent evaluators. The product was well tolerated; most AEs were mild-to-moderate local injection site reactions.