The Science and Benefits of GHK Cu Peptide: Skincare, Hair Growth, and Beyond GHK Cu 50mg Dosage Protocol PeptideDosages.com This is my third cycle on GHK Cu., My hair is growing. My nails are strong. My skin has improved. , And now Im focusing on those acne scars from my younger days., And honestly? Theyre starting to go Injectable GHK Cu: Beginner's Guide to Copper Peptide One of my favorite peptides is GHK Cu. It has made such a dramatic impact on my skin in just one cycle I've been shocked! It supports collagen, healing, and overall skin