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 Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B Glow Peptide Protocol GHK Cu, BPC 157, TB 500 Neurogan Health I've had @sumanurica in my routine for almost a year now, so adding the new GHK Cu Repairing Serum felt like the perfect next step It's lightweight, calming and layers beautifully, especially GHK CU 50 mg LIVV