GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B One of my favorite peptides is GHK Cu. It has made such a dramatic impact on my skin in just one cycle I've been shocked! It supports collagen, healing, and overall skin If you think GHK Cu is just an expensive skin cream, we need to talk. The truth that 99% of people, and even many doctors, overlook is that this copper peptide is How to cycle ghk cu? : r PeptideGuidesPH