Copper Peptide Regenerating Serum for Glowing Skin and Hair Copper Peptides vs. Retinol & Vitamin C: What to Choose? by DrBeautiology Medium 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 Peptides vs. Retinol Which is Better For Skin Health? Copper Peptides vs Retinol: Do You Need Both? Nubeean Noosa Copper Peptides vs. Retinol: Which Anti Aging Powerhouse is Right for Pure & Cimple