GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? GHK Cu spotlight A copper peptide commonly discussed in research communities for its links to skin appearance, hair interest, and tissue support. At HelixPeptides, we keep things clean, simple, and research focused, with 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 (2mg x 60 Capsules) (Copper Tripeptide), Tablets, Packaging Type: Bottle at 6500 box in Nagpur GHK Cu Peptide Therapy Collagen & Skin Renewal Defy GHK Cu (glycyl L histidyl L lysine) is a naturally occurring copper binding peptide found in human plasma. As levels decline with age, so may its support of the biological processes involved in collagen production, skin