GHK Cu peptides are used to potentially promote hair growth, increase hair follicle size, and improve scalp health, often for conditions like androgenetic alopecia. As a regenerative peptide, GHK Cu is believed to The hype is real. Ghk Cu aka the copper beauty peptide Ghk Cu Peptide Hair Before And After 99% Purity Ghk Cu Copper Peptide Powder for Skin Repair GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia