GHK Cu is a copper peptide known for its regenerative and anti aging properties , This topical cream may help support collagen production, improve skin quality, reduce inflammation, and even support 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK 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 HealthyDerm Copper Peptides GHK Cu Beef Tallow for Skin: Blue Balm with Methy