Glow Peptide Protocol GHK Cu, BPC 157, TB 500 Neurogan Health 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:, Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum If your GHK injection site gets irritated try this , 1. Dilute it by adding more water to the syringe , 2. Let it sit until it reaches room temperature , Also, make sure youre rotating injection