Practice Nurse Professional Resources for General Practice Nursing GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction Subcutaneous Injection Sites and Instructions for Safe Self Administration The GHK Cu pen works. But needles at home were never the answer. We took the same clinically backed copper peptide complex and put it into a serum you can use in 30 seconds, GHK Cu Peptide Dosage How to Use Copper Peptides, Injections Neurogan Health