GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? A few years ago, barely anyone was talking about copper peptides now GHK Cu and AHK Cu are everywhere in skincare, biohacking, and longevity conversations. But did you know there are copper peptides Copper Peptide Scalp AHK Cu Serum Nubeean Noosa Amazon.com: Neurogan GHK Cu + AHK Cu Hair Serum Pro Lightweight Scalp Serum with Dual Copper Peptides Daily Hair & Scalp Use, Cosmetic Product : Beauty & Personal Care AHK Cu (Copper Peptide) NovumLab.eu Has anyone tried aGHK CU serum for hair? It's a copper peptide based serum for hair. : r FemaleHairLoss