First, its a naturally occurring peptide found in human plasma that declines with age, making use a form of restoration rather than introduction of foreign compounds
Antioxidant supplementation partially rescues accelerated ovarian follicle loss, but not oocyte quality, of glutathione-deficient mice. Biology of Reproduction, 102(5), 1065-1079
With age, our natural levels of GHK-Cu diminish, making topical supplementation crucial for maintaining youthful, resilient skin
The maximum optical thickness of cells significantly increased (Figure 3)
If your concern is facial skin brightness For overall facial care and night-time routines, a night cream is usually the best choice