Everyone's calling GHK Cu a miracle peptide But let's separate marketing from mechanism. GHK Cu isn't magic. It's a signal. A signal that: Supports tissue repair Modulates inflammation Enhances collagen + The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline Pediatric Implications of Normal Insulin GH IGF Axis Physiology Endotext NCBI Bookshelf GHK CU Peptide for Skin Rejuvenation Wittmer Rejuvenation Clinic