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This may be unsurprising, given the primary role of glutamine in glutamate recycling, a process likely to be cortex-wide
Plasma concentrations of GHK in humans are reported at roughly 200 ng/mL in young adults and decline to approximately 80 ng/mL by age sixty [2]
It is commonly used in topical skincare for anti-aging and is being studied for systemic tissue repair
Topical application must penetrate the skin barrier, and even the best formulations lose a significant portion of the active compound during that process
Most patients experience no discomfort
Owing to its broad and potent activity profile and high safety margin in mammals, GHK-Cu is a valuable tool for studying tissue repair, regenerative biology, age-related degeneration, and as a model therapeutic agent in peptide research 1,2,4
