GHK Cu Youthful Skin, Healthy Cells, Vibrant You. ReMed HydraPen (GHK Cu) Blue Copper Peptide Serum 2 x 5 ml Microneedling MorySkin Buy GHK Cu Copper Peptide Capsules Online Emrald Labs Reducing Redness & Inflammation with GHK Cu Copper Peptides Vitali Skincare GHK Cu is the compound your body made at 25 and quietly stopped making. Most people find it in overpriced serums. Few understand what it actually does, or what happens when you're not