I broke my retainers before and a friend of mine recommended me to this. At first, I was really hesitant using this but a lot of people were really glad of their product so I give a try. It was painful at first, but you get used to the teeth moving. I only wear it at night and it really worked! It is easy to use and it works exactly as described. They ship the bands so quickly. Just follow their steps and directions accordingly. Now, I can smile confidently in my photos and goodbye to my teeth gap :D