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The Science Behind Copper Peptides GHK-Cu stands for Glycine-Histidine-Lysine Copper a naturally occurring copper complex found in human plasma, saliva, and urine

Over several weeks, the range expands and confidence builds

EOD dosing appears sufficient for anti-aging goals where the downstream gene expression changes outlast the peptide's plasma clearance GHK-Cu's impact on collagen and elastin gene expression persists for days after a single dose, meaning you don't necessarily need daily systemic presence

Your liver synthesizes it continuously, and every cell in your body relies on it to neutralize free radicals and reduce oxidative damage to cellular structures