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 Intensive Anti Aging Serum with Copper Peptide(GHK Cu) and Hyaluronic Acid eBay Skin Firming Eye Cream: GHK LUXE with TriFactor Complex Eye Cream with DMAE for Crepey Skin, Dark Circles, Sagging Eye Skin, Crow's Feet, and Puffiness Around Eyes Peptide Eye Cream 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