Can You use Copper Peptides and Retinol Together? Neurogan 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 Retinol Alternatives: Why Peptide Based Skincare Is the Future of Anti 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 Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3000