Clear aligners, like Invisalign®, are a series of custom-made, removable trays that gradually straighten your teeth without the need for wires or brackets. You wear each set of aligners for about one to two weeks before moving on to the next, with each tray applying gentle pressure to move your teeth into their desired positions. They are a popular choice for both teens and adults because they are nearly invisible and can be removed for eating and brushing.