GHK Cu Topical vs Injection Which is the Better Copper Peptide Form? 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 Fraley What's the difference between GHK Cu (copper peptide) as a topical cream vs an injection? In this video I break down: What GHK Cu is and why it's used in anti aging skincare Are GHK Cu Injections Safe Enough? Alternatives Options Neurogan Health GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration