The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline GHK Cu is more than a skincare trend its a copper peptide involved in repair, regeneration, and cellular signaling., This peptide has been studied for its connection to collagen production, skin GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia GHK Cu Copper Peptide Injections Your Skin's Ultimate Rejuvenation Boost Ready to restore youthful, glowing, firmer looking skin? GHK Cu Copper Peptide injections are one of the most powerful anti aging regenerative treatments The tripeptide GHKCu complex ameliorates lipopolysaccharideinduced acute lung injury in mice Oncotarget