1064 nm Q-Switched Fractional Laser for Transcutaneous Delivery of a Biostimulator: Efficacy and Safety Outcomes of a Split-Face Study

Background: Laser-assisted drug delivery is a promising strategy that enhances topical treatment by increasing cutaneous permeation and reducing side effects. In cosmetic settings, the efficacy and safety profiles of a treatment must meet the need of a painless procedure with fast recovery. In this context, Q-switched laser appears promising as it can open cutaneous pores without creating a carbonisation barrier. Methods: A split-face study on patients presenting for cosmetic procedures at IDI-IRCCS, Rome (30 September-18 October 2023), was conducted. Pan-facial Q-Switched laser was followed by a topical biostimulator applied on half of the face. Post-procedure local reactions were recorded together with patients' perceptions. Cutaneous elasticity and hydration were assessed at baseline and three-week follow-up. The Skindex17 questionnaire evaluated the procedure's impact on patients' life quality. Also, participants and physicians expressed satisfaction with the treatment. Results: The procedure was well tolerated by patients; local reactions include transitory erythema, superficial bleeding, and oedema, none of which had an impact on daily life. An improvement in skin quality was documented objectively and subjectively by patients and physicians. Conclusion: Q-switched lasers emerge as promising devices for drug delivery, especially for cosmetic reasons. Indeed, the low risk of local reactions together with a remarkable increase in cutaneous permeation make this a suitable strategy for cosmetic procedures.