GHK Cu (copper peptide) is one of the most talked about wellness peptidesand for good reason This naturally occurring peptide has been studied for its potential to support skin quality, hair health, and The GHK Cu pen works. But needles at home were never the answer. We took the same clinically backed copper peptide complex and put it into a serum you can use in 30 seconds, Oral Liposomal Copper GHK Liposomal GHK Cu Supplement GHK Cu Peptide (50mg) Advanced Skin Rejuvenation & Healing Support