Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum 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 GHK Cu Peptide Therapy Connecticut Skin Rejuvenation Benefits Copper Peptide Moisturizer GHK Cu Anti Aging Face Cream A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend 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: