Copper Peptide Solution, 1% Ghk cu in Double Hyaluronic Acid Serum Etsy GHK Cu Peptide Serum 30 ml, Copper Peptide Serum with Hyaluronic Acid for Tightening, Collagen Boosting Here is how you reconstitute any peptide There is no universal formula for reconstituting peptides. The amount of bacteriostatic water you use depends on the peptide, the dose you're running, and how GHK Cu High Purity Research Peptide Lab Tested