Product description How to Use: 1. Cover the braces with the upper and lower lips and do the action of closing the upper and lower lips. Bite your molars and move only your lips and jaw. 2. The braces should be between the teeth and the lips, do not bite with your teeth. 3. Each training time is recommended to be 3‑5 minutes, 3‑4 times a day. 4. By replacing springs with different thicknesses, the strength of the training closure can be adjusted. The product is equipped with springs with different resistances, and the resistance changes according to the strength of individual adaptation. 5. The initial setting is the minimum resistance spring. When the training can be continued for more than 5 minutes at a time, and do not feel obviously tired on lips, you can upgrade the spring with higher resistance and start training. Specification: Item Type: Oral Lip Muscle Training Tool Material: ABS Use: Lip muscle training tool Package List: 1 x Wrench 2 x Spring 2 x Support 1 x Main Body 2 x Braces Ingredients default