A randomized, patient/evaluator-blinded, split-face study to compare the efficacy and safety of polycaprolactone and polynucleotide fillers in the correction of crow's feet: The latest biostimulatory dermal filler for crow's feet

Background No data on the clinical results and safety profiles of the polycaprolactone (PCL) -based dermal filler for crow's feet correction have been published. Aims This study was designed to compare the efficacy and safety of a novel PCL-based dermal filler, DLMR01, with that of RJR, a purified polynucleotide dermal filler. Patients/Methods A total of 30 subjects with symmetric crow's feet of 2-4 points on the Crow's Feet Grading Scale (CFGS) were enrolled in this randomized, patient/evaluator-blinded, split-face study. Each subject was randomized to receive injections of DLMR01 or RJR in their right or left crow's feet. At 4 and 12 weeks, all participants were evaluated via CFGS, Global Aesthetic Improvement Scale (GAIS), and PRIMOS software system. Results No significant difference in CFGS, GAIS, andR(a)value was detected between DLMR01 side and RJR at 12 weeks (improvement rate in CFGS from baseline at week 12-DLMR01: 48.28% [14/29], RJR: 41.38% [12/29]). Conclusion The novel PCL-based dermal filler DLMR01 shows suitable efficacy and safety, widening the selection possibilities for clinicians and patients in the treatment crow's feet.