I had CO2 laser mole removals on 2 flat dark moles. It's been 2 months since my treatment and one of the moles has returned in the form of a very light brown spot. My surgeon told me it was post inflammatory hyper pigmentation and that it should fade withing 6 months. Since meeting with him the spot has gotten darker. Is it realistic to expect the pigment to blend in with my skin within 6 months or is this permanent?