Best Invisalign treatment in Kovilambakkam You Can Take the Aligners Out to Eat Patients often ask us “do you have to wear Invisalign all the time?” For best results Invisalign needs to be worn for 20 - 22 hours each day, which means you can take your aligners out when you are eating. This means you don’t have to change what you eat or how you eat it. With braces people find some types of foods difficult or uncomfortable to eat.