GHK-Cu, or glycyl-l-histidyl-l-lysine copper complex, is a naturally occurring peptide found in human serum, known for its regenerative and protective properties. Researchers primarily study GHK-Cu for its potential in tissue repair, wound healing, and anti-aging applications. Key findings from studies indicate that GHK-Cu stimulates collagen and elastin synthesis, promotes angiogenesis, and exhibits anti-inflammatory and antioxidant effects, which may contribute to its ability to enhance skin remodeling and cognitive function. Current research is focused on elucidating the molecular mechanisms underlying these diverse actions and exploring its therapeutic applications in various fields, including dermatology and orthopedics. Despite promising preclinical evidence, further clinical studies are necessary to validate its efficacy and safety in human populations.