GHK Cu Copper Peptide Benefits, Uses & Safety Intra V Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with Peptide GHK CU Cream Concierge MD How to Maximize GHK Cu Peptide Results with Micro Infusion Celebrity Esthetician Secrets GHK CU Research Peptide Alpha Carbon Labs 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