For best results, Invisalign clear aligners should be worn 20 to 22 hours every day. Invisalign aligners are removable, allowing you to take them off when eating, brushing, and flossing. However, it's critical to reinsert them afterward to maintain the necessary pressure for teeth movement. Following the recommended wear time is essential for achieving the desired outcome and enjoying the benefits of a straighter smile with Invisalign.