The jaw muscle trainer is the perfect tool to train the jaw muscles and achieve a defined jaw line. The set consists of 10 pieces and offers 5 adjustable training levels(30lb,40lb,50lb,60lb,70lb), suitable for beginners and advanced users. The trainer is made of food-safe and hygienic silicone material. Follow these simple steps: Step 1: Start with the trainer at the lowest resistance level. Clean the Silicone Jaw Trainer before and after each use with warm water and mild soap. Step 2: Place the Silicone Jaw Trainer between the upper and lower molars in the center of the mouth. Step 3: Gently press on the jaw to hold the trainer in place. Step 4: Tense the jaw and facial muscles by clenching the jaw for 20-30 seconds and pausing for 10 seconds. Repeat this exercise 5-10 times, depending on your comfort and strength level. Step 5: Repeat gradually until you are comfortable with the highest level of resistance. Safety Precautions: Do not use the Silicone Jaw Line Trainer if you have any jaw pain or injury. Consult your physician before beginning any new exercise routine, including the use of the Silicone Jaw Line Trainer. Avoid sharing the device with others to prevent the spread of germs and other infectious diseases. Do not overuse the device to avoid damage. Always start with the lowest resistance level and gradually increase the levels to avoid injury.Natural Face Lift: The Jawline Exerciser is a great alternative to expensive and invasive face lift procedures. It's a natural way to lift and tone your face, giving you a youthful and radiant look. Suitable for Everyone: Whether you're a man or a woman, the Jawline Exerciser is the perfect addition to your daily routine. It's also great for people of all ages and fitness levels. Easy to Use: Simply chew on the Jawline Exerciser for just a few minutes every day and see the results for yourself. It's the perfect tool for busy people who don't have time for complicated workout routines. Say Goodbye to Double Chin: The Jawline Exerciser is a powerful double chin reducer that helps you get rid of that pesky fat under your chin. Sculpt Your Jawline: Our jawline exerciser is the perfect tool for anyone looking to achieve a more defined and chiseled jawline. The set consists of 10 pieces and offers 5 adjustable training levels(30lb,40lb,50lb,60lb,70lb ).