Amazon.com: QUBIT GHK Cu Copper Peptide Face Cream 4% Peptides Moisturizer for Fine Lines, Wrinkles, Firming, Deep Hydration & Collagen 2400mg GHK Cu for All Skin Types, 30g : Beauty & GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK Amazon.com: Caffeine 5% + Bakuchiol Eye Serum for Dark Circles, Puffiness Eyes with Argireline & Copper Peptides (GHK Cu) Roll on Under Eye Serum, Anti Aging Wrinkle Care for Fine Lines 20ml : Beauty