Cu GHK vs Tretinoin: The Anti Aging Showdown Peptides vs. Retinol Which is Better For Skin Health? Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3000 Copper Peptides vs Retinol Can You Use Copper Peptides With Retinol? 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 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