GHK Cu Copper Peptide: The Ultimate Peptide For Longevity 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 Product Question] Most effective way to deliver GHK Cu (Copper Tripeptide 1) through skin? : r SkincareAddiction GHK Cu Copper Peptide Benefits, Uses & Safety Intra V GHK Peptide Injection and GHK Cu Benefits, Uses ,safety