Biossance Squalane + Copper Peptide Rapid Plumping Serum 2 weeks in on GHK Cu and the glow is REAL. Brighter complexion More even skin tone Less breakouts Softer fine lines Thicker, fuller hair This is just Does GHK Cu actually ruin other peptides or is that just bad formulation? Most stacks miss the mark when it comes to stability, but KLOW was designed differently. From pH optimization to independent GHK Cu Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application ScienceDirect