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doi: 10.1055/s-0028-1100831

The profound effects of GHK-Copper across different domainsfrom skin rejuvenation, hair growth enhancement, to its wound-healing prowess and anti-inflammatory propertiesunderline its potential as a cornerstone in both cosmetic and therapeutic applications

The copper component is essential for activity - copper is a critical cofactor for numerous enzymes involved in collagen cross-linking (lysyl oxidase), antioxidant defense (superoxide dismutase), wound healing, and tissue remodeling, and GHK functions as a highly effective copper delivery system that facilitates copper uptake into cells and tissues where it can support these essential enzymatic processes

Because there are so few human studies, we do not have a clear picture of long-term safety