Biossance Squalane + Copper Peptide Rapid Plumping Serum 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 + red light therapy = INCREDIBLE results : r 30PlusSkinCare 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 Natural Copper Peptide Serum Booster