Resveratrol in Dermatological Therapy: A Critical Review of Mechanisms, Delivery Innovations, and Clinical Frontiers.

The management of complex dermatological disorders, including chronic inflammatory diseases, non-healing wounds, and skin malignancies, often faces significant challenges. These include limited efficacy against chronic or relapsing conditions, the emergence of drug-resistant pathogens, and significant side effects from long-term therapies. This clinical gap highlights the urgent need for novel therapeutic agents. Resveratrol (RES), a natural polyphenol with pleiotropic bioactivities, has emerged as a compelling candidate substantiated by its diverse modulatory effects on cutaneous pathophysiology. This review aims to critically synthesize the evidence for RES's efficacy, dissect its foundational mechanisms, and explore innovations in drug delivery designed to overcome its clinical limitations. This review critically synthesizes evidence of the efficacy of RES in managing challenging dermatological conditions, including chronic wounds, psoriasis, atopic dermatitis, melanoma, acne, and herpes simplex virus infections, by dissecting its foundational antioxidant, anti-inflammatory, and immunomodulatory mechanisms. Its therapeutic action is mediated through critical molecular pathways, notably the activation of SIRT1/AMPK and suppression of NF-κB, which collectively mitigate oxidative stress, normalize cellular proliferation, and recalibrate immune responses. Although systemic bioavailability limitations have historically hindered RES's clinical translation, innovative delivery systems, including nanoparticles, hydrogels, and advanced transdermal formulations, are now revolutionizing its topical application and markedly enhancing its localized efficacy and stability. This review consolidates robust preclinical evidence from animal models demonstrating RES-driven accelerated wound healing, diminished inflammatory markers, and significant tumor suppression while also appraising nascent yet promising clinical trial data that indicate good tolerability and initial efficacy in human subjects. Ultimately, this synthesis crystallizes RES as a versatile and promising therapeutic agent in dermatology, concurrently underscoring the imperative for continued innovation in delivery methodologies and execution of large-scale stringently designed clinical trials to fully unlock its therapeutic potential.