I think everything I did for my scars worked synergistically and helped, but if I had to choose one product, it would be GHK Cu (aka copper peptides)., Now one year later I see the resultsand theyve Ghk cu gave me acne scars : r Biohackers Food Derived TripeptideCopper Self Healing Hydrogel for Infected Wound Healing Biomaterials Research Longevity: Functional Medicine for Optimal Health and Wellness GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B