To round up the best teeth whitening kits, we asked oral care experts for their input and tested several top options ...

They apply the bleach themselves in trays that look like gumshields and which are worn at night. 'Many over-the-counter bleaches have a very high acidity, which can damage the teeth,' says Dr Phil ...

Supports efficient and easy delivery to teeth whitening trays Opalescence Teeth Whitening 20 Percent: This teeth whitener is intended for 2-4 hours a day wear Dental Care: Gluten free; kosher ...