This seems to work. Used 3 times and skin looks tighter, less lax/droop on my cheek by chin. Will keep using, excited!!
I cannot say that this is a bad product, but I did not understand it. The first time I was afraid that my teeth would suffer, so strong it works. Okay, I thought, maybe I'm doing something wrong. And I tried again a week later. I was able to relieve the pressure on my teeth with the OFF button, but now I feel like my jaw hurts. And I can't see that it's good for skin. Maybe this was not done for lifting, but in order to pump up the muscles of a square jaw, like Superman's? :-)))