GHK Cu Peptides Benefits for Anti Aging Skin Rejuvenation How to Use With Micro Infusion GHK Cu Copper Peptide Regeneration, Skin Renewal & Anti Age Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3000 Dr Tahera explains that the topical version of GHK Cu and how it supports skin repair and rejuvenation. This is the cream based approach. Injectables? We'll cover that next. Because understanding your options matters.