Copper Tripeptide 1 and Red Light Therapy: A Powerful Duo for Skin Rej Mito Red Light Not all copper peptide serums are created equal And this is where a lot of people get confused. You'll see copper peptides on the label and expect amazing results but the Copper Tripeptide 1 Copper peptide GHK Cu Cosmetic Ingredients Guide Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3000