GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B What is GHK Cu and Why is Everyone Talking About It? GHK Cu (Copper Peptide) is a powerful, naturally occurring compound in the body that plays a key role in skin health GHK Cu G Lab Peptides Amazon.com: Argireline Serum for Fine Lines & Wrinkles Advanced Peptide Face Serum with GHK Cu to Help Improve Skin Firmness & Texture 1 Fl Oz : Beauty & Personal Care If you're using GHK Cu and it stings a little (which is common) this one's for you In this reel I'm sharing the small tweaks that have helped me make peptide injections