No side effects. If it hurts, a small part is fat burning, and most of it is the pain of muscle tissue being squeezed by force. It won't get fat with your use, but it doesn't seem to have much effect.

If it weren't for his big face.

There are many reasons why faces have many sides. When chewing, the movement of the masticatory muscle makes that muscle bigger, which makes the face bigger.

The good way is to eat as little as possible. It is very hard and chewy. After eating, as long as you massage the masticatory muscles on both sides of your face with your fingers, it won't get bigger and bigger.

I also used a face lift device. It was painful at first, and I suffered a lot, but my face will still recover. After all, it's meat. I suggest you use it less or not.

Nature is the most beautiful, believe in yourself, you are perfect, come on.