The Peptide Craze Ground Truths The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline ., This copper binding peptide is naturally found in the body and plays a critical role in wound healing, The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline 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, GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect