The Liposomal Copper GHK from @quicksilverscientific has become a non negotiable in my routine. GHK Cu is a copper peptide that our bodies naturally produce, but has we age, our levels drop significantly. Peptide Labz Copper Peptide Hair Growth Serum, 10% GHK cu, 5% AHK cu, Rejuvenates Follicles Walmart.com Gloss Hair Growth Conditioner with GHK Cu Copper Peptides VANI T GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective?