PIH or PIE After TCA. Will Fraxel Dual 1927 Help?

I stupidly self inflicted a TCA 35% peel several years ago. I now have skin discoloration. A derm has told me I do not have scarring but I do have PIH, but it doesnt look brown- it looks red/purple-ish. I've also read about post inflammatory erythema. I need some advice on what the best treatment is. I've gotten about 50% relief with 4 pulsed dye laser treatments, 2 of which were VBeam perfectas. Do I stick with more PDLs or try the 1927 in hopes of fewer treatments and more greater clearance?