GHK Cu Copper Peptide Collagen, Skin Rejuvenation & Hair Restoration How to Inject Peptide Based Medications (Subcutaneous Method) Hone Health 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, Figure 2 from GHK Copper Peptide in Skin Remodeling and Anti Aging ! GHK Cu in Skin Remodeling Semantic Scholar GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B 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: