But They may cause irritation and could not do the job as well. Some OTC kits include a bendable mouthpiece. These perform a lot better than just one-sizing-matches-all trays. The bleaching gels that can be found in these kits aren’t as potent as the ones you have from the pro. https://teethwhiteningsouthafrica09753.blogdeazar.com/26655101/a-review-of-teeth-whitening