HapiPatch.com GHK Cu Copper Peptides: The Proven Skin and Hair Regenerator Finally Getting the Recognition It Deserves GHK Cu Peptides: Unlocking the Copper Peptide Revolution in Skin Care 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 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 Oral Liposomal Copper GHK Liposomal GHK Cu Supplement