GHK Cu Copper Tripeptide for Skin Research Aether Bio 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 Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu Peptide Benefits for Skin and Hair LIVV Natural Peptide Therapy for Inflammation: A New Solution GHK CU Facial Serum Hydrating Face Serum