Here are 4 innovative formulations to integrate into your regimen for optimal skin health. , Copper Amino Isolate Serum 3 1:1 contains 1% GHK and 1% GHK Cu, a foundational copper peptide that Advanced Aging Collection Our skin works differently at night, it devotes itself to regeneration and repair. How can we work Copper peptides are naturally occurring in the skin and are used to help skin perform at its best. , That is why our lab formulated Copper Amino Isolate Serum (CAIS 3 1:1) our third (and hopefully NIOD Copper Amino Isolate Serum 2:1 15ml Lookfantastic