Fun and Effective
If you've ever done "The Big O" facial exercise, this device gives a similar effect but is more fun. It also targets the jaw muscles better. I haven't had any quality problems and inhaling and exhaling is easy. Don't overthink it. Just focus on collapsing and expanding the silicon bubble. You'll hear a pop each time. Do that for a few minutes. You should experience a slight soreness, muscle burn along your jaw and cheek area. For maximum effect, try not to bite the device! I think it is more challenging when only the lips are used for support. If you have difficulty in the beginning, a light bite is okay. I use this device in combination with a jaw exerciser (silicon chew blocks). You will start to see a noticable difference in the look of your face after a few weeks. I'm surprised by the negative reviews here because this device has been working great for me and there is nothing I can think of that would improve it.
Rating: 5 stars