GHK Cu LVLUP Health GHK Cu (copper peptide) used topically is one of the most well studied skin repair peptides. Here's how it helps the skin, in practical terms: 1. Boosts collagen & elastin GHK Cu signals your skin Amazon.com: GHK Cu Copper Peptide Supplement, 120mcg High Purity Supplement for Skin & Hair, Enteric Coated for Maximum Absorption, Vegan & Gluten Free (60 Count) : Health & Household I've finally hit the copper uglies phase and I'm okay with it because my skin looks and feels phenomenal. If you're thinking about trying this is the one you need. #ghkcu #wellness #peptalk #