Super CP Serum & Exfol Serum Combo The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline This peptide reverses aging And it's been hiding in plain sight for decades. GHK Cu (Copper Peptide) is one of the most researched anti aging ingredients out there. Here's what it does: Boosts 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