GHK Cu Colombia Research Dosing & Skin Recovery Guide Poly Biotech This peptide reverses aging, And its been hiding in plain sight for decades., GHK Cu (Copper Peptide) is one of the most researched anti aging ingredients out there., Heres what it does:, How long does GHK CU take to start working? #ghkcu #transformation #ghk #skin #mt2 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: GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective?