Copper Peptide Hair Growth Conditioner GHK Cu for Hair Loss Hairgenetix Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health Most people think skincare works at the surface level. But healthy skin function starts much deeper than a temporary glow. GHK Cu is a naturally occurring copper binding tripeptide that is already found Just started GHK Cu? Here's what to expect This isn't an overnight peptide, it builds Weeks 12: You may start noticing small shiftsskin feels a bit smoother, nails a little stronger Weeks 34: