GHK Cu Copper Peptide: The Ultimate Peptide For Longevity GHK Cu is the compound your body made at 25 and quietly stopped making. Most people find it in overpriced serums. Few understand what it actually does, or what happens when you're not GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? Proposed acidic degradation pathway of GHKCu in acidic solution. Download Scientific Diagram GHK Cu: Skin Healing, Anti Aging, & Hair Growth Benefits 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