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 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 GHK Copper Peptide GHK Cu Tripeptide 1