What is the best treatmemt to lighten the vertical scar and soften the under breast scar? (photo)

I had a breast reduction when I was 15 years old. I am now 32 years old. I had it done at such a young age because the weight of mu breasts at the time had me hunched over with back pain constantly. I was told that there would be scarring initially but it would heal. I used to have two vertical scars on both breasts but now I only have it on one. My plastic surgeon died a year after he did my surgery from a heart attack so I cannot see him. I just want to know how to get rid of these scars. So depressing!