GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? Copper peptide questions we get asked all the time How often should you use it? Do you need to avoid the sun? If you're new, start once daily (evenings are great), GHK CU (InfiniWell) GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health GHK CU vial dosage question : r PeptidePathways Some people notice their skin looks worse before it improves with GHK Cu. This temporary phase is often called the copper uglies. #skincare #ghkcu #skinhealth #longevity #peptides