Feature:- Chisel your jaw and achieve a stronger looking face- Reduce double chin, never look awkward in photos- Activate 57+ muscles in the face- Increase blood flow and oxygenation to the face for a youthful look- Slim and tone the face for a defined profile at various angles- Increase metabolism to help you lose weight- Reduce cravings by satisfying the desire to chew and eat- Relieve stress and tension in the mouth and faceHow to use Jawline Exerciser ?1. To fit, first practice placing Jawline Exerciser and get the feel for how wide you should open your mouth.2. Stick your thumbs through the hole, place, and adjust Jawline Exerciser so you are biting down on bite strips.3. Bite down and hold for 15 seconds to customize the mouthpiece to the contours of your own mouth.4. Remove Jawline Exerciser from the mouth and cool your imprints under cold water for a few seconds to permanently set imprints.Safety Warning:1.Not meant for use on children under the age of 18.2.Before use, please read all instructions to make sure that the product is used in the correct way.3.The use of Jawline Exerciser may cause minor pain to the muscles of face during the exercise process. This is normal however, if you feel you're having very painful reaction, stop use immediately.