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 a growing body of peer 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Neurogan + Health GHK CU Copper Peptide Hair and Scalp Serum PrettyStick MINOXIDIL MELATONIN GHK CU TRETINOIN CAFFEINE SCALP FOAM Beauty Refined