2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Seraphime Hair Growth Serum Intense with Copper Peptide GHK Cu AHK Cu + GHK Cu Hair Serum Pro 4800mg Hair Growth Neurogan Neurogan Health Amazon.com : Mayraki Intense Hair Treatment with Copper Peptide GHK Cu, DHT Blocker for Thicker, Stronger Hair Growth 45 ml 1.52 fl. oz : Beauty & Personal Care 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 GHK Cu Hair Growth Spray Strengthen & Revitalize Hair Pure Tides Therapy