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measured MMP1, MMP2, TIMP1, and TIMP2 gene expression in human adult dermal fibroblasts exposed to GHK-Cu at 0.01, 1, and 100 nanomolar concentrations and found dose-dependent increases in both MMPs and their inhibitors 11

Your liver leans on glutathione to neutralize and clear out toxins, like acetaldehyde, the nasty byproduct that builds up when you drink alcohol

They can also cross the BBB and activate TLRs in the brain (35)

doi: 10.3945/ajcn.110.003483

Proper dosing ensures adequate copper peptide delivery without overwhelming the body's regulatory systems

"Reduction of marine phytoplankton reproduction rates by copper and cadmium"