GHK Cu Peptide Before and After Results 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 Everyone talks about GHK Cu but nobody talks about how it actually works best. Buying each ingredient separately? Thats easily $90$200+. But youre gettng this topical formila for an insane $30. Defy GHK Cu (glycyl L histidyl L lysine) is a naturally occurring copper binding peptide found in human plasma. As levels decline with age, so may its support of the biological processes involved in collagen production, skin Facial Beauty Serum with Copper Peptide (GHK Cu) Fullscript