GHK Cu , GHK CU GHK vs GHK Cu Without Copper, Basic Peptide Neurogan Health Let's talk about GHKU CU GHK Cu: The Regenerative Glow Peptide GHK Cu (Copper Peptide) is a naturally occurring peptide in your body that plays a powerful role in cellular repair, skin GHK Cu is one of the most powerful regenerative peptides for skin, hair, and overall tissue health., GHK Cu supports collagen production, healing, and visible rejuvenation from within., Its commonly Skin Glow (GHK Cu) Pen Peptide 100 Pen Peptide