I have one. I put it on my brain and it wiped my cares and personalities. What it does is pulse your brain tissue and squeezes and releases them.
If your gonna use on prepare for a life of no cares or motivation.
I believe headaches are psychosomatic cares and worries that you are holding onto in nerves in your brain. Care itself is a headache. It is required to pull a job and make money.
The desire of psychology to make everyone comfortable ultimately leads to the destruction of all cares. This is good for elinating violence. But the consequence is the elimination of all behavior whatsoever.
If your going to use this your going to need another person to violently beat you into doing absolutely anything. I never found that someone.