One of my personal favorite peptides: GHK Cu (Copper Peptide) I've been using this one consistently and I absolutely love what it does for skin health, healing, and overall cellular repair. GHK Cu is GHK CU Crepey Skin Escape Platinum Skin Care Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with Biossance Squalane + Copper Peptide Rapid Plumping Serum What is GHK Cu and Why is Everyone Talking About It? GHK Cu (Copper Peptide) is a powerful, naturally occurring compound in the body that plays a key role in skin health Peptide Labz Copper Peptide 12% GHK CU Serum, Hyaluronic Acid, Anti Aging, 1 fl oz Walmart.com