If the scar troubles you this much, have you looked into near infra red treatment? You can get a light box that blasts 650nm and 850nm wavelength light and aim it at your scar for like 20 minutes a day and it works really well for repairing skin and reducing scars. I bought a box myself back in the day to get my boys some light. It works by stimulating the michochondria. Its widely used in professional sports to speed up recoveries. I bought a box from china for about 200 euros.