NIOD Copper Amino Isolate Serum 2:1 Review 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 Whats the difference between our copper peptide formulations? , Copper Amino Isolate Lipid 1% (CAIL 1%) is our intensely pro repair, patented copper peptide gel to regenerate skin volume and NIOD Copper Amino Isolate Serum 1.00% (CAIS1%) Reviews for 30s Hwahae True healthy looking skin is cultivated over time. At NIOD, we believe that skincare requires patience, care, and respect for your skins natural intelligence., 23% off, all month long. Celebrate with