What's the correct use for an ultrasound massager of 1 Mhz?

Question

I have a 1Mhz ultrasound massager, sometimes I use it for pain and it seems that the place (like back and forearm) where I used it starts to hurt more than before, even if I only use it for some minutes, not in the strong mode. Sometimes I use it thinking of preventing pain, when I don't feel any pain, and I start to feel some pain afterwards, even after only 1 or 2 minutes using the ultrasound massager. Should I use it for more time then? Or not at all? I thought it was supposed to heal instead of making me hurt more... am I wrong? What's good about it then, when should I use it?
I'd also like to know if I can use it on my face and neck, for beauty purposes. If I can't, do you know the reason why?
Thank you

Answer 1

you must keep moving the head of the ultrasound continually also you should be using a conducting gel on the head of the ultra sound to keep from burning muscles or bone. It's far too dangerous to use on your face, this is a very powerful machine and is only designed for muscle relief. It's not a beauty product.

Answer 2

Keep the wand/head of an ultrasound moving at all times! Staying over one spot for more than even a minute could start heating up the periosteum of the bone underneath. This is serious damage!