GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? Reddit asked questions. Here are answers. GHK Cu isn't newit's just not heavily marketed for hair (yet). Dr. Loren Pickart discovered it in the 70s. Decades of clinical research. Solid mechanism. We screwed Serum A (GHK Cu) Increases hair follicle size Inhibits follicle death Regenerates new hair growth Serum B (ESS60 in MCT Oil) Proven to extend the lifespan of GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true?, Copper peptide, known as GHK Cu, has a growing body of peer Hair Growth Serum Intense with Copper Peptide GHK Cu