Improve chin line, the jagged chin line looks younger and better.Quite simple to fit, not too complicated, does the job of exercising the facial muscles.?SAFETY FDA food grade silicone Using revolutionary patented technology, quickly shape and tighten your face and neck.It has no taste. It’s like working out any other muscle if you do it correctly and with this you’ll see results. These instructions are easy to follow, especially the method of moulding the occlusal point onto the tooth is good and simple. Polyurethane bite band, easy for you to customize the mold, oral cavity. Chewing has been shown to reduce cravings, leading to more weight loss. Convenient, hands-free exercises, easy to carry, can be used when going out, gym, work, and use anywhere. The amount of practice can start with a minimum of 30 to 40 repetitions, and then four sets of 150 repetitions per day. You do need to persevere, but it can bring results.