GLOW FROM WITHIN This is NOT just another serum this is Peptide+ GHK CU Powered by copper peptides, it works deep within the skin to: Boost collagen & elastin ( 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 Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum GHK Cu Copper Peptide Serum 1% Black Tie Health Copper Peptides Serum for Face 2% GHK CU & 4% EGF Seraphime