IPL Burns on Legs, 6months and Still Have PIH. What Do You Suggest? (photo)

Sorry to hear about your burn.  Hopefully the pigmentation will continue to improve with time.  I would consider using topical bleaching creams (hydroquinone is used most commonly), strict sun avoidance, possibly a series of gentle chemical peels such as Jessner's peel, and low energy 1064 nm Q-switched Nd:YAG laser treatments using a laser such as the Medlite or Revlite.  I would be very hesitant to do more IPL treatments given the fact that IPL caused the injury in the first place. 

I'm so sorry to see this happened to you. I would not suggest you do any more treatments with that office, and I wouldn't recommend doing IPL there especially unless they have a different, more experienced laser operator. I can tell from the burn marks that this was a badly done treatment to begin with. Technicians are supposed to stack the pulses close together, meaning the head of the machine goes right next to the pulse before it. You should not have spaces like that between the bars. I would suggest you see a board-certified dermatologist or plastic surgeon and perhaps get a prescription for compounded hydroquinone, which you will apply only to the bar marks. If it's been 6 months it should help take some of that brown pigment out. After a course of HQ, I would suggest some VERY light IPL, but not with the office that burned you to begin with, as I said above.