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 GHK Cu Topical vs Injection Which is the Better Copper Peptide Form? GHK Cu Copper Peptides: Topical vs Injectable 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 Buy GHK Cu Capsules from Peptide Works GHK CU Copper Peptide, Face Cream, 2 oz (60 ml)