GHK Cu Topical Spray Wells Pharmacy Network GHK Cu Troche Strive Pharmacy You started using a GHK Cu peptide serum on your face and now , The things no one tells you., Yes, the injections can hurt like a bitch. , Heres the thing Ive found it works even better topically, Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: What is the recommended dosing for copper peptides injectable? GHK Cu Epitalon: Skin + Cellular Longevity PeRx