What is the best option for hypertrophic scars two years after breast augmentation? (Photo)

You will do well with scar revision.  Excise the old scar and the new scar should be better because there will be less tension then immediately after a breast augmentation.Best Wishes,Nana Mizuguchi

There is no easy way to treat hypertrophic scars. From your pictures it appears there is still significant lumpiness as well as redness. I would expect this to improve with more regular and frequent steroid injection combined with silicone tape or cream. Laser may help with the redness but unlikely to reduce the lumpiness of the scar.