Product Question] Most effective way to deliver GHK Cu (Copper Tripeptide 1) through skin? : r SkincareAddiction GHK Cu Peptide (50mg) Advanced Skin Rejuvenation & Healing Support The tripeptide GHKCu complex ameliorates lipopolysaccharideinduced acute lung injury in mice Oncotarget Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack?