I need someone to put the process of explaining home bleaching teeth. I use opalescence and drawers. What should I do after I finish whitening after I’ve taken out the drawers? Should I brush my teeth, use mouthwash? Can I eat? Why are my teeth hurting? Is that normal? I am only 13, so I’m not that good at it. If you could be as descriptive as possible, so that would be useful.