How to Maximize GHK Cu Peptide Results with Micro Infusion Celebrity Esthetician Secrets Fraley What's the difference between GHK Cu (copper peptide) as a topical cream vs an injection? In this video I break down: What GHK Cu is and why it's used in anti aging skincare Topical or SubQ GHK Cu? Same molecule. Very different purposes. Topical you apply it on your skin. Think of it as feeding your skin from the outside. In a 12 week study of GHK CU Research Peptide Alpha Carbon Labs GHK Cu Peptide (50mg) Advanced Skin Rejuvenation & Healing Support