GHK Copper Peptide GHK Cu Tripeptide 1 Peptide dosing Synthagen PL I've had @sumanurica in my routine for almost a year now, so adding the new GHK Cu Repairing Serum felt like the perfect next step It's lightweight, calming and layers beautifully, especially Create your own serum! GHK Cu Repairing Serum is stored in revolutionary, two part packaging, consisting of a powder formula in the lid and a liquid solution in the base. Neurogan Health, Copper Peptide GHK CU, 120 mcg, 60 Tablets iHerb