The difference between our Copper Peptides and GHK Cu GHK Cu is one specific copper peptide molecule great for signaling repair and collagen support. Our Copper Peptide formula goes beyond just Sculpting jaws, giving scores: Inside the world of looksmaxxing 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: GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Subcutaneous Injection Sites and Instructions for Safe Self Administration