Anybody know the correct way of using ahk cu? Do I mix with bac water and inject into abdomen? The GHK Cu pen works. But needles at home were never the answer. We took the same clinically backed copper peptide complex and put it into a serum you can use in 30 seconds, 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 Cooper Peptide: The Complete Skin & Repair Guide (2026) GHK Cu Focal Point Vitality