Copper Peptides & Retinol Can They Be Used Together? Yes, you can use Copper Peptides & Retinol just be smart about it! Retinol = speeds up cell renewal Copper peptides = support Retinol vs. GHK Cu Two key ingredients used to address visible signs of ageing. Retinol A popular synthetic molecule that accelerates cellular turnover and skin resurfacing, helping to promote even skin 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