Putting the pads on the forehead

Hello,

I have been using the pads on my feet for a while and my general health has greatly improved.

I still have headache though.

I have noticed some improvements after putting the pads on the big toes and on the neck.

My impression is that I could get even better results by putting them on my forehead.

Has anybody tried that? Is it safe?

Thanks and best regards,

Mario