Standard cleanig, then the bleaching. I hated it when they quazed my mouth. The had to do it to protect my mouth. I was quite impressed with the results. I gagged one time, I think it was the second session. I started to think about the guaze too much and it started to bother me, I paniced, pulled shit out my mouth. The tech told me to calm down, I did and finished the procedure. If I did it again I would bring headphones and a CD player. Or a portable DVD. It took about 2hours from start to finish