Have you heard of GHK Cu? It's one of our favorite regenerative peptides right now. This copper peptide was originally discovered in human plasma and plays an important role in skin repair and 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 Peptide: Turn Back the Clock Naturally Calibrate Hydration GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B 7% GHK CU ACCELERANT Platinum Skin Care