Copper Peptide Hair Growth Serum for Hair Loss & Thinning Hair Feline Skinscience 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 Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum So excited about this peptide! GHK Cu serum and scalp solution available Fascinating peptide that helps to prevent and reduce fine lines and wrinkles. Applied topically on the scalp for hair growth.