In cosmetic formulation, it functions as a potent skin brightening active by inhibiting tyrosinase, the enzyme that drives melanin synthesis, and redirecting melanogenesis from the darker eumelanin pathway to the lighter phaeomelanin pathway
Insulin Secretion and Sensitivity Apart from stimulating insulin release, GLP-1 suppresses the secretion of glucagon, a hormone that increases blood glucose levels by promoting gluconeogenesis and glycogenolysis in the liver
These products can change how your body works and are often promoted online and on social media for "anti-aging", weight loss, bodybuilding, athletic performance, injury recovery, sleep, mental focus, or general "wellness"
Why the extrapolation is weaker than it looks It is tempting to reason: topical works locally, mechanism is systemic, animals respond to injection, therefore injection should work for skin in people. Each link in that chain is weaker than it appears