Can I use my retainers to Whiten my teeth?
Retainers
Yes, you can use whitening gel with your retainers to whiten your teeth, and it won’t damage them. However, retainers aren’t as effective as custom whitening trays. Because retainers fit so tightly against the teeth, most of the gel gets squeezed out, reducing its effectiveness. For better results, consider adding custom whitening trays to your order. These trays are designed with small reservoir pockets that help keep the gel in place for optimal whitening.