What is the safest way to whiten my teeth???

Question

i have permanent retainers behind the bottom of my teeth.please help

Answer 1

wash them twice a day and floss.

Answer 2

So far, the most successful and promising teeth whitening solution I have found is GoSmile. Basically they are little capsules with a patented technology, you flip the little capsule, squeeze and hear it cracking, then apply it on your tooth. I'm not sure if you have to do it anywhere else other than the surface, but it whitens down into the surface of your tooth and not just the top. Results should be seen, I think 3 shades lighter within a few uses or a couple of days.