Retinol Vs Peptides Which Is Better? Science Becomes Her 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 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK GHK CU Copper Peptides Cream for Face Anti Aging Collagen Booster, GHK CU Peptides Moisturiser Face, Anti Wrinkle Face Cream for Fine Lines & Skin Elasticity, Repairs Damaged Skin, 50g : Amazon.co.za: Beauty Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3 Dr. Brenner Labs