Glucagon-Like Peptide-1 (GLP-1) Receptor Agonists and Cutaneous Biology: Implications for Skin Disease and Longevity

BACKGROUND: Glucagon-like peptide-1 receptor agonists (GLP-1RAs) have expanded from metabolic therapeutics to agents with broad effects on inflammation, tissue repair, cutaneous and adipose biology, and aging-related pathways. Clinicians increasingly encounter cutaneous manifestations and aesthetic sequelae with important implications for dermatologic counseling and multidisciplinary care. OBJECTIVE: To review current evidence regarding GLP-1RA effects on skin biology, inflammatory dermatoses, wound healing, cutaneous adverse events, and aesthetic aging. MATERIALS AND METHODS: A narrative review of clinical, translational, and mechanistic literature was performed, emphasizing psoriasis, hidradenitis suppurativa, wound repair, skin hypersensitivity reactions, autoimmune blistering disease, and facial volume loss associated with pharmacologic weight reduction. RESULTS: GLP-1RAs are hypothesized to improve inflammatory skin conditions and wound repair through anti-inflammatory, immunometabolic, and proreparative pathways. Yet, their use may also be associated with injection-site reactions, hypersensitivity eruptions, rare autoimmune blistering disorders, and clinically significant facial deflation and skin laxity. Current evidence is strongest for mechanistic plausibility and observational clinical signals, whereas dermatology-specific randomized trials remain limited. CONCLUSION: GLP-1RAs exert bidirectional effects on cutaneous biology. Recognition of both therapeutic opportunities and potential aesthetic or adverse sequelae is important, with patient counseling ideally occurring within a multidisciplinary framework that integrates metabolic benefits with skin health and appearance.