Before their use in skincare, Copper Peptides were originally introduced in wound healing research. Listen to the sounds of copper peptides and stay tuned to learn more Lets talk copper peptides , We get asked this all the time:, Whats the difference between GHK and CP Serum?, Heres your quick guide:, GHK (first generation), Beautiful blue serum, Best for Copper Peptides: The Ultimate Collagen Booster & Skincare Powerhouse AMINU Copper Peptides Serum for Face 2% GHK CU & 4% EGF Copper Peptides for Skin Health The Great Address Copper Peptides Serum for Face 2% GHK CU & 4% EGF