The name comes from the combination of the peptide GHK and copper ions, which work together as a peptide-copper complex
Jul 16 2021;10(14)doi:10.3390/jcm10143144
Reduced L-Glutathione (GSH) This is the active, ready-to-use form of glutathione
American Journal of Physiology Regulatory, Integrative and Comparative Physiology, 1998
It is a sequence of 15 amino acids that acts like a biological repair signal, telling injured tissue to do what healthy tissue already knows how to do: build blood vessels, lay down collagen, close wounds, and calm inflammation
This makes glutathione work extra hard, using it up faster than it can be replaced