GHK CU Crepey Skin Escape The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline Everything you need to know about GHK Cu WHAT IS IT? A copper peptide your body naturally produces but production drops by 60% by age 60. It's one of the most Viral claim says GHK Cu reset nearly 4,000 genes to a younger state and increased collagen production in a preclinical study. This refers to research on GHK Cu, a naturally occurring copper binding peptide that Super GHK Copper