Int J Nanomedicine
It should be used with caution in patients with diabetes given the glucose-elevating effects of GH
Much of the GHK-Cu literature comes from Loren Pickart, who both discovered the peptide and holds patents related to copper peptide skincare products
N-acetylcysteine, or NAC, is a supplement that works in two ways: It provides cysteine, which is the rate-limiting amino acid for glutathione production It can also act as a direct antioxidant to scavenge ROS (NO2 and HOX)[ref][ref] The main antioxidant mechanism for NAC is by increasing glutathione levels
That means buying from brands that prioritize third-party testing and dont use any unnecessary fillers, dyes, or binders
What GHK-Cu adds to the formulation: Gene expression modulation across hundreds of genes including collagen genes (Type I, III), tissue inhibitors of metalloproteinases, anti-inflammatory mediators Collagen synthesis stimulation, specifically Type I and Type III collagen the structural proteins of skin, connective tissue, and many other tissues Anti-inflammatory signaling through investigated effects on TNF-, IL-6, and NF-B pathways Copper-peptide chemistry effects including cofactor activity for skin-relevant enzymes Skin-research and hair-research applications (the GHK-Cu literature in these areas is substantial) For the GHK-Cu deep-dive, see Copper Peptides Explained