Instruct: Classify an Amazon review as either positive or negative.
Query: does not work

I was tricked into buying this after reading the review, I wore it several times after I got it and got suspicious as I did not feel any benefit. I went online and try to find out more about this technology, if you do some googling you will know that it has no scientific evident and major trustworthy health and science site also urge people to not fall for this. I should have done my homework before spending money.