- Jaw and facial smile exerciser that strengthens mouth muscles and improves expression - Allows you to train facial muscles scientifically and easily, simply by placing the U-shaped part in your mouth - Recommended daily use: three times a day for 30 minutes for visible results in a short time - Helps correct a crooked mouth caused by muscle asymmetry and improves facial symmetry - Promotes facial stretching, reducing masseter muscles and slimming the face - Ergonomic and comfortable design, suitable for different professional profiles and lifestyles - Portable facial beauty tool, easy to clean and reusable - Green color, compact size for carrying and using anywhere