GHK Cu Cooper Peptide: The Complete Skin & Repair Guide (2026) GHK Cu Injections in Napa & Sonoma What is GHK Cu Cream? GHK Cu is a topical peptide cream featuring copper peptides that support your skin's natural repair process. Backed by science, this ingredient offers a range of skin enhancing benefits: GHK Cu Copper Peptide 0.5% (topical foam) GHK Cu Topical Spray Wells Pharmacy Network GHK Cu Peptide Serum 30 ml, Copper Peptide Serum with Hyaluronic Acid for Tightening, Collagen Boosting