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10.1016/s0149-2918(03)90096-8 10 BorM

This is not placebo: GHK-Cu upregulates glycosaminoglycan synthesis, including hyaluronic acid and dermatan sulfate, which directly increase skin hydration at the dermal level

But are they worth the hype

Athletes and competition AOD-9604 is on the World Anti-Doping Agency Prohibited List under category S2.2 (peptide hormones, growth factors, related substances, and mimetics)
