I have palomar 1540 treatment two week ago, this is my first time treatment, my depressed scar have 30% improvement. my doctor schecule me for 4 treatment, each a month apart. my face get red and swelling for around 7 days, but nothing pain or uncomfort. i read a lot or bad review about this laser and fraxel. i did not done any fraxel but i think the key point is to choose the right doctor to do the laser is very very important. because doctor is the one to adjust the setting of the laser base on their expenance.