Can I use Retinoids with Vitali GHK Cu Copper Peptides? How do I get t Vitali Skincare 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 GHK Cu Peptides Serum TryDeloura Amazon.com: Argireline Serum for Fine Lines & Wrinkles Advanced Peptide Face Serum with GHK Cu to Help Improve Skin Firmness & Texture 1 Fl Oz : Beauty & Personal Care Peptides vs. Retinol Which is Better For Skin Health? 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