Can I use Retinoids with Vitali GHK Cu Copper Peptides? How do I get t Vitali Skincare 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 Peptides vs Retinol Can You Use Copper Peptides With Retinol? Retinoids vs Peptides (Matrixyl CP): what to pick + how to pair, Effectiveness: Retinoids (retinol tretinoin) have the strongest clinical data for photoaging (wrinkles, texture, tone). Peptides