A systematic review of 20 studies (18 preclinical, 2 RCTs) confirms GHK-Cu’s regenerative potential in aesthetic medicine, demonstrating enhanced collagen synthesis, anti-inflammatory effects, and clinically significant wrinkle reduction. Preclinical data show robust effects on extracellular matrix, metalloproteinase modulation, and angiogenesis, while advanced delivery systems (microneedles, liposomes) substantially improve bioavailability. However, only 2 human trials exist with methodological variability, and the authors identify a critical gap: standardized clinical trials with controlled dosing and formulations are needed to move GHK-Cu from experimental to evidence-based practice.
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GHK-Cu shows consistent preclinical support for collagen remodeling, but only 2 RCTs exist — set realistic patient expectations pending standardized trials.