Redness after a peptide injection can feel alarming but in most cases, its completely normal. , If youve noticed a pink or red halo at the injection site especially with peptides like GHK Cu Buy Oral GHK Cu Pharmacy RX Invigor Medical GHK Cu Injectable Team Wellcore I took a serious turn last year towards peptide derived skincare. It changed my skin in all the best ways I didn't even imagine. When I started GHK Cu (copper peptide) injections 3 If your GHK injection site gets irritated try this , 1. Dilute it by adding more water to the syringe , 2. Let it sit until it reaches room temperature , Also, make sure youre rotating injection