Procedure and results on lower face and neck rejuvenation using a temperature-controlled bipolar fractional radiofrequency microneedling device.

Background And Objective: Radiofrequency (RF) devices which are under ongoing technological development, are being increasingly used for minimally invasive rejuvenation procedures. The objective is to evaluate the efficacy and safety of a procedure that uses bipolar RF microneedles for rejuvenation of the lower face and neck.

Study Design And Methods: A prospective clinical and histological study, with a blind evaluation of the results by independent evaluators. Twenty-four women over 40 years of age were evaluated, who were treated with bipolar RF equipment (Profound™; Candela Medical) during a single session. Biopsy samples were taken from 12 patients. Microscopy images related to the immediate effects of RF and the changes observed 4 months after treatment were examined. The clinical results were established through questionnaires and by comparing before and after photographs. Mean (m), range (R), and percentage (%) values were calculated.

Results: Immediate lysis of adipocytes in submental fat was observed, as well as an increase in the density and compaction of elastin and collagen fibers 4 months later. The average percentage of reduction in fine lines, wrinkles, furrows, and folds was around 30%, while the average improvement of the neck silhouette was around 20%. Photographic signs of aging improved significantly, both in the face (p = 0.0007) and the neck (p = 0.002). Patient and therapist satisfaction with the results was 8.3/10 (R = 3-10) and 9.3/10 (R = 8-10), respectively. The adverse effects were mild and temporary and no complications were observed.

Conclusion: The procedure is safe, clinically effective, and satisfactory for patients.