Ghk Cu Vs Tretinoin For Anti Aging I promise I do so much more than lips Just 1 month on Tretinoin, GHK Cu, Niacinamide, Azelaic Acid..healthy, youthful beautiful skin!!! I'm so here for it!!! GHK CU Before and After Pictures Topical GHK Cu Skin Results, Face Serum Reviews & Photo Results Neurogan Health Copper peptides better than tretinoin? #dermreacts #tretinoin #copperpeptide 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