Product Question] Most effective way to deliver GHK Cu (Copper Tripeptide 1) through skin? : r SkincareAddiction GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK Cu Revival Clinic Ghk Cu Intra Nasal Spray 50 mg 0.34 oz. Westend Medical Supply Still injecting in the same spot every time? Read this. Where you inject your peptides can actually affect absorption, comfort, and results. Quick guide: Abdomen: fastest absorption Upper arms GHK Cu Peptide: Benefits for Tissue Repair, Healing, and Recovery Revolution Health & Wellness