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 Biossance Squalane + Copper Peptide Rapid Plumping Serum Deciem NIOD CAIS 1.00% review Laura Loukola Science, meet your skin. GHK Cu is one of the most studied peptides in skincare 40+ years of peer reviewed research backing results you can actually see. This isn't a trend. Our GHK Cu Multi Peptide + Copper Peptides 1% The Ordinary