Why Does Ghk Cu Sting TikTok GHK CU side effects no one talks about 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 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 Shop our GHK CU Peptides GHK Cu Copper Peptide Neck & Face Serum