GHK CU COPPER PEPTIDE 5MG 10MG 50MG 100MG VIAL UMBRELLA Labs If your GHK Cu or MOTS C injection leaves welts and burns like a hornet, it's usually not the peptide it's the technique. A few small tweaks can turn a sting into almost Let's talk copper peptides We get asked this all the time: What's the difference between GHK and CP Serum? Here's your quick guide: GHK (first generation) Beautiful blue serum reels #peptides #igdaily