Dark Spots After Smart Lipo

I had smartlipo of the abdomen 5 months ago although the scars look great there are small dark spots over the scars. My plastic surgeon has performed 3 laser treatments and I've been using Obagi clear over the areas but they still have not gone away. Is there anything else I can do for the spots to lighten? My plastic surgeon says that they will fade with time but I'm getting worried that they will never go away. Would it help if I combined the Obagi clear and the treiton? continue laser?