Invisalign is the “invisible” way to straighten teeth without braces. Invisalign uses a series of clear, removable aligners to gradually straighten teeth, without metal or wires. Invisalign: Brace Alternative Benefits Invisalign is clear. You can straighten your teeth without anyone knowing. Invisalign is removable. You can eat and drink what you like during treatment. You can brush and floss normally to maintain good oral hygiene. Invisalign is comfortable. There are no metal brackets or wires to cause mouth irritation, which means spending less time in the doctor’s chair.