GHK Cu in the NAD+ Push Patch: A Smarter Way to Stimulate Collagen, He Hi, Finch GHK Cu is not Botox. It does not freeze a single muscle. It works because it works at the matrix level. GHK Cu stimulates collagen and glycosaminoglycan synthesis, modulates the matrix metalloproteinases that govern GHK Cu Topical Spray Wells Pharmacy Network Copper Tripeptide (GHK Cu) for Advanced Skincare & Haircare Formulatio Defy GHK Cu (glycyl L histidyl L lysine) is a naturally occurring copper binding peptide found in human plasma. As levels decline with age, so may its support of the biological processes involved in collagen production, skin