Copper Peptide (GHK Cu) 2% Recovery Serum Peptides vs. Retinol Which is Better For Skin Health? Breaking: more people are starting to explore copper peptides over retinol Not because retinol is bad but because people are beginning to understand how different ingredients actually work. GHK Cu is something your Incorporate GHK Cu LS5 Copper Serum in Your Skincare Routine There is no definitive answer as to whether retinol vs peptides are better for anti aging. However, there is a lot more research backing retinol as an effective ingredient, while peptides are still