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 Hair Growth Serum Intense with Copper Peptide GHK Cu Does GHK Cu Regrow Hair? Here's What the Research Shows Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule