I had laser a little over a year ago and now i feel like i have a lighter demarcrated line on my upper lip...is this permanent? I am skin type IV and they used a Radiancy laser on me I went back to tell them and they said they couldnt see anything that their laser would of caused my whole skin around it to hypopigment because the laser is squared like a 4x6 but i do feel my skin changed a bit of color what do you think?