this review title is: a gimmick product and the content is: i did everything i was suppose to do but the pick seems more like a gimmick than something that actually helps with callus just felt like it was massaging my teeth and i didn t want to be too aggressive with it because i didn t want to destroy my tooth enamel or chip them i don t have a lot of callus at all but the two i do have didn t budge.there are other information for this review, one is this reviewer did purchase it and the other is 2 people think this review is helpful.