Skin Perfection GHK Cu Copper Peptide Serum Booster, 1 Percent Blue Liquid For Face, Neck, Body, Hair, And Scalp, 0.5 oz Walmart.com GHK Cu, commonly known as copper peptides, are found naturally within the human body where they play a vital role in skin repair and maintenance. Copper peptides support optimal skin function by helping Copper Peptide Serum (GHK Cu + HA) PepDerm PREP FILES DOCUMENTARY , Episode 2 Tesamorelin + GHK Cu (Part 2 Continued), Morning peptides during prep can play a powerful role in recovery, body composition, and overall health optimization,