GHK Cu Copper Peptide Skin & Healing Beverly Hills 9 months of consistency with a protocol that works systemically, not superficially. This has included GHK Cu subcutaneous and topical, collagen, protein and an intentional lifestyle ticking off the essentials of sleep, training, GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline