A bonded retainer is fixed/bonded to your teeth and is not removable. It is fixed to the inside of your teeth so it is completely discrete. As bonded retainers are a permanent fixture, your teeth will stay in their new positions and will not be able to move back to where they were before. Bonded retainers do not require any special looking after, they are very easy to clean. You will simply need to brush your teeth as normal to make sure they stay clean.