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: Experiencing itching & burning from your GHK CU peptide injections? Try these to hacks:, 1. Use a longer syringe to penetrate deeper into the fat cells. , 2. Dilute the copper. Here I show you how to GHK Cu Peptide (50mg) Advanced Skin Rejuvenation & Healing Support GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B My GHK Cu Injection Journey: Youthful Skin, Collagen & Hair Growth