Intensive Anti Aging Serum with Copper Peptide(GHK Cu) and Hyaluronic Acid Peptides vs. Retinol Which is Better For Skin Health? GHK Cu Copper Peptide Benefits, Uses & Safety Intra V Most skincare stays on the surface., GHK Cu works deepersupporting your skin at the cellular level without the irritation cycle of retinol., No redness., No downtime., Just real support where it Cellular Glow Copper Peptide GHK Cu Serum for Face