this review title is: i suggest you go to youtube and watch some videos before you purchase and the content is: i will not rate this product until i use it but i suggest you go watch a youtube video before purchasing any of these jaw exercisers not seen a video on this product i was not sure how to use iti will try to make a review on this item after i use it for a few weeks and see the results i will give it a two star rating only because it did not have a video to go with it.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.