GHK Cu: My secret weapon for skin, hair, and healing, I use it two ways topical cream for my face, and subQ injections 3x a week., It boosts collagen, tightens skin, helps hair grow, and even 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 Unlocking the Secrets of GHK Cu: The Revolutionary Peptide for Youthfu GHK Cu Focal Point Vitality Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit Medically Guided Skin Treatment Rumen Australia