No, not as a primary effect
Extra-C FAQ
The short plasma half-life of GHK-Cu is one reason why twice-daily dosing schedules are sometimes used in injectable protocols, though the peptide's downstream gene expression effects appear to persist well beyond its plasma clearance
Weller S, Braun MC, Tan BK, Rosenwald A, Cordier C, Conley ME, Plebani A, Kumararatne DS, Bonnet D, Tournilhac O, Tchernia G, Steiniger B, Staudt LM, Casanova JL, Reynaud CA, Weill JC: Human blood IgM "memory" B cells are circulating splenic marginal zone B cells harboring a prediversified immunoglobulin repertoire
It plays a key role in cellular regeneration and healing by promoting actin regulationa process essential for cell movement and tissue repair
Journal of Investigative Dermatology (1999) 10