GHK CU Beverly Hills Rejuvenation Center Peptide Therapy for Hair Growth: Explore Your Options GHK Cu Peptide Dosing PeptidesPower A year ago I started working with a copper peptide called GHK Cu. Topically every night. And under my doctor's care, I went deeper than topicals with a low dose. The difference in GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy After a year of using GHK Cu both topically and going deeper than topicals (under my doctor's care), the difference in my skin is not something I have to squint at in good