Not all Copper Peptides are created equal If you've tried copper peptides before and saw no change, here is why: Concentration and Stability. Most serums use a diluted solution that barely scratches 99% Pure Copper Peptides (ghk cu) Great for DIY 1 Gram Etsy GHK Cu Blue Copper Peptide Serum NEW. Blue Copper Multi Peptide 8.0 Advanced reformulated for smarter skin renewal. #GRAVICH #SmartSkinRealResults Amazon.com : AzulBotanicals Copper Peptide GHk Cu & Methylene Blue Infused Whipped Grass Fed Tallow Balm, Fine lines, Wrinkles, Eczema, Acne, Full body Moisturizer, For All Skin (1.7 oz) : Beauty & Personal