Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? Copper Peptides Better Than Tretinoin TikTok 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 better than tretinoin? #dermreacts #tretinoin #copperpeptide