Background: Exosomes are small extracellular vesicles involved in cell-to-cell communication and have gained attention in regenerative and aesthetic dermatology. Their bioactive components are thought to support skin regeneration, helping improve skin quality and visible signs of aging. Objectives: This paper aims to explore the clinical outcomes and safety of an intradermally administered exosome-based formulation for improving skin quality, radiance, and wrinkle appearance in multiple anatomical regions. Methods: This prospective observational case series included eight healthy adults (seven women, one man; median age 49.5 years) presenting visible signs of skin aging. Participants received intradermal microinjections of an exosome-based formulation to the face, neck, décolleté, and hands over four consecutive weeks. Efficacy was assessed using standardized wrinkle and radiance scoring systems, the investigator- and subject-rated Global Aesthetic Improvement Scale (GAIS), and paired statistical analyses. Safety and tolerability were evaluated at each visit. Results: Progressive improvements in wrinkle severity and skin radiance were observed across treated areas, with trends toward improvement from Week 2 onward. Both investigator and participant GAIS scores indicated consistent aesthetic improvement, reaching mean values of 1.63 at the final visit, indicating consistent improvement over time. The treatment was well tolerated, with only mild transient erythema reported at each session and one instance of minor microbleeding. Conclusions: Intradermal administration of an exosome-based formulation was well tolerated and associated with visible improvements in skin quality and radiance. These preliminary findings suggest potential clinical benefit of exosome-based formulations in aesthetic dermatology. Larger, controlled trials are warranted to confirm efficacy, optimize treatment protocols, and investigate long-term outcomes.
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