Perhaps the most commonly asked about question when it comes to GHK Cu is THE BURN. Let's learn! @summitrejuvenation Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule Definitive Guide on Peptides for Skin and Hair Care Infusion Clinic ABQ The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline