If youre playing with raw GHK Cu, heres the secret that makes it actually work on your skin: mix it with hyaluronic acid. , Not microneedling, not fancy devices just a clean HA serum as the Wholesale GHK Cu Copper Peptide Neck & Face Serum for your store Faire GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? Topical GHK cu with Hyaluronic acid : r DIYaesthetics 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