Lets talk GHK Cu , GHK Cu is a naturally occurring copper peptide that supports:, Collagen production, Tissue repair, Skin rejuvenation, Reducing Inflammation , Healthy aging, As levels The potential of GHK as an anti aging peptide By age 30, your skin produces about 25% less collagen. By 40, that number can reach 40%. This decline affects more than just how your skin looks. It changes how it heals, GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? Effects of Copper Tripeptide on the Growth and Expression of Growth Factors by Normal and Irradiated Fibroblasts Jeffrey D. Pollard, Susan Quan, Thomas Kang, R. James Koch, 2005