7% GHK CU ACCELERANT Platinum Skin Care GHK Copper Peptide GHK Cu Tripeptide 1 After a year of using GHK Cu both topically and going deeper than topicals (under my doctor's care), the difference in my skin is not something I have to squint at in good GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B 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 Pptido de cobre GHK GHK Cu Tripptido 1