Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit 2 weeks in on GHK Cu and the glow is REAL., Brighter complexion, More even skin tone, Less breakouts, Softer fine lines, Thicker, fuller hair, This is just the beginning. Consistency is 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 Copper Peptide (GHK Cu) 2% Recovery Serum GHK Cu Capsules 2mg Peplogix 7% GHK CU ACCELERANT Platinum Skin Care