European Multicenter Prospective Study Evaluating Long-Term Safety and Efficacy of the Polycaprolactone-Based Dermal Filler in Nasolabial Fold Correction

Background Age-related changes affecting facial areas can be corrected using minimally invasive dermal fillers. The use of polycaprolactone-dermal filler (PCL-filler) in aesthetics is increasing. Objective To evaluate the long-term safety and efficacy of the PCL-filler, in a European, multicenter, prospective study. Materials and methods Subjects (n = 90) with moderate/severe nasolabial folds (Wrinkle Severity Rating Scale [WSRS]: 3 to 4) were treated on Day 0 with a single injection of similar volume on each side; safety and efficacy assessments were performed over an 18-month period. In 1 of the 3 study centers, safety was evaluated at 30 months. Results At Month 12 (M12; primary endpoint), 84% of subjects showed a ≥1-point improvement on the WSRS (M6: 92%; M18: 64%). From the investigator/subject's evaluation, from Day 7 to M12, Global Aesthetic Improvement was reported for >90% of subjects, with the effect maintained for up to 18 months in >80% of patients. Subjects/investigators reported high satisfaction and skin quality improvement. Most of the immediate injection-site reactions disappeared after 2 to 4 days. No severe or unexpected adverse events were reported. Conclusion This study demonstrated the long-term safety and efficacy of the PCL-filler, with safety confirmed for up to 30 months.