However They could potentially cause irritation and may not get the job done too. Some OTC kits come with a bendable mouthpiece. These function a lot better than one particular-measurement-fits-all trays. The bleaching gels that come in these kits aren’t as strong as the ones you get from the Professional. https://teeth-whitening37541.ambien-blog.com/32636062/the-basic-principles-of-teeth-whitening-south-africa