Scar revision or injections after breast reduction? (photos)

I had a reduction from a GG to D 2years ago. Scars at first were thin lines, hidden under the breast. Over time they have thickened, mainly on the inner chest and are painful when not wearing a bra. The anchor coming down from the nipple also has a purple area that has spread outwards. My main problem area is the scars on the inner chest as they are visible when wearing certain tops and bikinis. That may sound superficial but they are giving me as much of a complex as when I had bigger breasts.