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 FOXO4 DRI induces keloid senescent fibroblast apoptosis by promoting nuclear exclusion of upregulated p53 serine 15 phosphorylation Communications Biology GHK Copper Peptide GHK Cu Tripeptide 1 Peptide Therapy for Injury Repair: Faster Healing with Regenerative Orthopedic Support Meeting Point Health FOXO4 an overview ScienceDirect Topics