Uncover the Power of GHK Cu peptide FIT9 Everyone seems to be talking about GHK Cu right now but most people still don't understand what it actually does. GHK Cu is a naturally occurring copper binding peptide that has been studied for its GHK Cu Scalp Solution Empower Pharmacy Four reasons this serum belongs in your routine. GHK Cu Peptides that firm and support collagen renewal. Barrier support to keep your skin healthy and resilient. No injection. No needles. No clinic visit.