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 Seraphime Copper Peptides Serum VS The Ordinary Multi Peptides + Anai Rui GHK Cu Copper Peptides Serum VS The Ordinary Multi Peptides + Nebulization of glutathione and N Acetylcysteine as an adjuvant therapy for COVID 19 onset ScienceDirect