GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu (Copper Peptide) isn't just another trend. It's a naturally occurring peptide in our bodies that plays a vital role in healing, collagen production, skin regeneration, and even hair support. Here's all Peptide Therapy for Hair Growth: Explore Your Options Should Bodybuilders Take GHK Cu? Neurogan Health