Copper Amino Isolate Serum 3 1:1 (CAIS3) NIOD Copper Amino Isolate Serum 3 1:1 (CAIS3) NIOD As we age, our skins performance decreases., Give the gift of healthy looking skin. , Copper Amino Isolate Serum 3 1:1 is a foundational copper peptide (1% GHK and 1% GHK Cu) serum to restore the I've tested more topical peptides than most dermatologists have recommended and I have strong opinions about all of them. Peptides are the communication system your skin runs on and around 40, that