Novel Strategies for Androgenetic Alopecia Therapy: Integrating Multifunctional Plant Extracts with Nanotechnology for Advanced Cutaneous Drug Delivery

Androgenetic alopecia (AGA), the most common form of hair loss, imposes considerable psychosocial and medical burdens. Current topical treatments are limited by suboptimal efficacy, slow onset, side effects, and poor patient adherence. Although numerous reviews have explored natural plant-based strategies for managing AGA, most offer fragmented evidence with limited systematic correlation between mechanistic studies and clinical outcomes concerning single plant constituents. This review critically synthesizes recent pharmaceutical advances in AGA therapy, with a focus on the synergistic potential of multifunctional plant extracts integrated with nanotechnology enhanced cutaneous delivery systems. We begin by examining the mechanistic basis of AGA pathogenesis and the limitations of existing treatments to identify unmet therapeutic needs. Next, we systematically evaluate plant extracts supported by robust in vitro, in vivo, and clinical evidence for their anti-androgenic, anti-inflammatory, antioxidative, and anti-apoptotic properties. Finally, we address key biopharmaceutical challenges in transdermal delivery for AGA and discuss how nanocarriers can overcome these barriers to improve local drug bioavailability and target specificity. By bridging phytochemistry and nanomedicine, this review provides novel insights and a pharmaceutics-oriented framework aimed at developing safer, more effective, and patient-compliant topical therapies for AGA.