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Plasma GHK-Cu levels decline with age, from approximately 200 ng/mL at 20 to under 80 ng/mL by 60, paralleling the drop in dermal repair capacity

(2018) reported a study in which 71 women with mild to advanced photoaging applied a facial cream containing GHK-Cu for 12 weeks

1 PD is a progressive neurological condition defined by motor symptoms such as tremor, rigidity, bradykinesia, and postural instability

Altern Med Rev

In one small study, Epitalon significantly stimulated evening melatonin synthesis in senescent rhesus monkeys (Macaca mulatta) and helped normalize their circadian cortisol rhythm
