Cu Peptide Before and After: What to Expect for Skin and Hair Amazon.com: The Youthful Copper Peptide Face Serum Collagen (Formula Same Buffet Plus Copper Peptides) Peptide Serum for Hydration, Anti Aging, Firmness, Skin Elasticity, Copper Elixir 30ML : Beauty & Personal Care Turn back time without filters. GHK Cu Copper Peptides help smooth fine lines, boost collagen, and bring back that healthy, youthful glow. Most people think GHK Cu is just a beauty peptide. But look at this Same person. Same lighting. Real skin change. GHK Cu works by activating repair genes in the body helping with