Did you know that Tretinoin can damage GHK Copper Peptides?. If you use Tret at night, save your GHK Lux for the morning. , Get the full safety guide on our YouTube Channel!, #platinum_skin_care Alternating tretinoin and GHK Cu (copper peptides) nightly maximizes anti aging benefits while minimizing irritation. , Both are potent but DIFFERENT actives. Tretinoin speeds up cell turnover and GHK CU Crepey Skin Escape GHK CU Before and After Pictures Topical GHK Cu Skin Results, Face Serum Reviews & Photo Results Neurogan Health 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