GHK Cu might be trending, but its not new., Before you inject yourself with this viral peptide, consider this., This copper peptide has been studied for years in skin repair and collagen signalling, Injectable GHK Cu: Beginner's Guide to Copper Peptide GHK cu hard spots at injection site : r Peptides Absence of evidence isnt evidence of absence its a popular argument, but its not how we should be guiding treatment decisions. In this short, I respond to a comment about GHK Cu injections for How to Inject Peptide Based Medications (Subcutaneous Method) Hone Health