GHK CU Research Peptide Alpha Carbon Labs Fraley What's the difference between GHK Cu (copper peptide) as a topical cream vs an injection? In this video I break down: What GHK Cu is and why it's used in anti aging skincare GHK Cu is a peptide that helps improve skin by boosting collagen and healing damage. It can be used as a cream (topical) or an injection. The cream is great for wrinkles, scars, and hydration, but it GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution