GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Copper Peptide (GHK Cu): Clinical Uses, Stability & Compounding Tips Not all Copper Peptides are created equal If you've tried copper peptides before and saw no change, here is why: Concentration and Stability. Most serums use a diluted solution that barely scratches GHK Cu 10 g (10% Concentrate, 100,000 ppm) Lrak Technologies