Vitamin B5 also reduces scar tissue. You have to take about 500 mg daily for several months. A long scar on my hand is no longer visible to the naked eye. Part of it can still be felt.
Try a product called Scar Massage by Home Health or Belly Balm, I forget the manufacturer but it's for stretch marks. Might help over time.
I has been my experience that time lightens up the scars. I suffered from cystic acne which left dark spots and scars. The scars remained, but the spots faded to normal skin color. It takes a while.