Injectable GHK Cu: Beginner's Guide to Copper Peptide BEAUTY PEPTIDE DETAILS + TIPS + why this peptide is everywhere right now, GHK Cu (copper tripeptide) goes beyond surface level beautyits naturally found in the body but declines with age. Known 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 GHK Cu, the copper peptide, is a game changing injectable for radiant skin and so much more, , , Heres what it can do:, Boost collagen for smoother, firmer skin, Anti aging improves fine