2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Seraphime GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B A few years ago, barely anyone was talking about copper peptides now GHK Cu and AHK Cu are everywhere in skincare, biohacking, and longevity conversations. But did you know there are copper peptides GHK Cu is a naturally occurring copper peptide that has been widely researched for its regenerative and restorative properties. It functions by binding to copper ions and delivering them into cells, GHK Cu: Skin Healing, Anti Aging, & Hair Growth Benefits