Latanoprost and Copper Peptides for Hair Growth, When we talk about topical hair growth support, two ingredients that I find interesting are latanoprost and copper peptides., Latanoprost is a Ghk Cu Shampoo Copper Peptide Hair Growth Best Peptide for Hair Growth Copper Peptide Shampoo Melatonin Hair Growth Serum GHK cu Stem Cells Scalp Hair Growth Serum STEMBOTANY Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact