ghk-cu target GHK‐Cu directly bound and activated SIRT1. (A) Process of Copper GHK (GHK-Cu) – Freedom

Ensuring adequate protein intake (particularly collagen-rich foods or supplements), vitamin C for collagen synthesis, and omega-3 fatty acids for inflammation modulation supports optimal outcomes

Studies comparing GHK (apo) vs GHK-Cu consistently show reduced activity for the copper-free peptide

Skin Firmness, Texture, and Visible Aging According to the International Journal of Molecular Sciences , GHK-Cu's small size and ability to bind to copper allow it to participate in copper metabolism, which may affect certain age-related processes in the body

I'm sure that's the case [but of course that's only my opinion!] Sometimes I simply write these things on the fly, and should review them before I post