I had both in infrared laser and pixel harmony. The infrared laser was 200 a session, I had 3 on my face and one between my breasts. It removed most of the pinkness from my cheeks that was permanent damage from a sunburn. The ones on my face were only painful as I was being zapped. After the each zapp the spot did not continue to hurt but the machine makes a loud noise each time you are zapped...