GHK Cu 100mg (Research Only) GHK Cu (Copper Peptide) has emerged as one of the most promising regenerative peptides for hair restoration due to its ability to stimulate follicular activity, improve scalp circulation, reduce inflammation, and prolong the 7% GHK CU ACCELERANT Platinum 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 GHK Cu Peptides for Research 99% Purity Guaranteed GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect