Hi : ) CAIS is NIOD's Copper Amino Isolate Serum. It contains GHK peptides bound to copper which is known as copper peptides (GHK Cu) that are found in our plasma and are good Review: Niod Copper Amino Isolate Serum (CAIS 3 1:1) My Skincare Regime 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 Our Formulators: NIOD Products Explained