Efficacy and safety of a new hyaluronic acid dermal filler in the treatment of severe nasolabial lines - 6-month interim results of a randomized, evaluator-blinded, intra-individual comparison study

Summary Background  Hyaluronic acid (HA) fillers are frequently used for the correction of facial soft tissue defects. Aim  To compare the efficacy and safety of a novel HA filler, HAE (Emervel Deep), with those of HAP (Restylane Perlane) in the treatment of severe nasolabial folds (NLF). Patients/Methods  A split-face, randomized and evaluator-blinded comparison study. Subjects were randomized to receive injection of HAE or HAP on their left or right NLF. Efficacy was evaluated based on the change in Wrinkle Severity Rating Scale (WSRS) from baseline. Local tolerability was assessed based on subject diary during the first 3 weeks after injection. Adverse events were also evaluated. Results…