HOEGOA Copper Peptide Hair Growth Serum With GHK CU AHK CU Powerful Hair Growth Treatment Stimulates Follicles Reduces Thinning Thickens Hair Improves Scalp Health for Fuller Stronger Hair Over Time 30ml Best Price GHK Cu Peptide Serum 30 ml, Copper Peptide Serum with Hyaluronic Acid for Tightening, Collagen Boosting GHK Cu Focal Point Vitality GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has Wellness peptide craze: why people are injecting drugs 'not for human consumption'