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glutathione reductase mechanism Schematic diagram showing the conversion of (GSH) from the The Role of the Glutathione
Description
GHK-Cu activates lysyl oxidase and prolyl hydroxylase enzymes, important for cross-linking collagen fibers and maintaining skin structure (Pickart, Biochemical Pharmacology, 2008)

Oxid Med Cell Longevity

Together, both reactions generate excess quantities of NADH, which lowers the intracellular NAD + /NADH ratio, also known as the cellular redox potential
Even using sterile water when you plan to store the vial for multiple uses is a mistake, as it lacks the bacteriostatic agent to prevent microbial growth

BPC-157: The Peptide with Big Claims and Scant Evidence