High-quality Material: This jaw exerciser is made of free food grade silicone. Our double chin reducer consists of the same material as a baby pacifier. Non-toxic type of silicone that doesnt contain any chemical fillers or byproducts, making it safe for chewing on it. Repair Flabby Skin: If you have facial skin laxity after weight loss or childbirth, please choose our jaw and chin exerciser. Our jaw trainer can enhance the blood flow of your face and neck muscles by training 55 facial muscles, reshape your face shape, and make your skin tighter and stronger. Humanized Design: Our Jaw exerciser tablets are designed to use molars for training, its safer and more effective. Unlike other types of exercisers, they use front teeth (incisors) for training, this kind of exercisers may damage the front teeth and gums. Multiple Benefits: Chewing has been shown to decrease cravings, leading to more weight loss, getting rid of double chins and loose facial muscles. This jaw toner helps face tone firming, chisel jawline shaping, and slimming by strengthening your jaw and face, make you look younger. Different Intensity Training: Our jaw exerciser pieces have different pulling force values. 15lb is suitable for beginners and 30lb is suitable for senior exercisers. You can distinguish the different pulling force values by pressing the jawline exercise piece with your hand, so as to select different training pieces to exercise the jaw.