This callus remover is so easy to use on the heel of your feet. I got this because the heel of my feet is where there is dead skin that makes my heels hard. This has help gently remove it off. I could see and feel a difference e from using this. My feet felt a lot smoother and looked healthier especially after using the polisher that it comes with. It does not look as dry. This also comes with an extra head for replacement. You can get one here http://amzn.to/2bYsEM7 They are very easy to change because you just press the button on the side and then it releases it. This is curved in a way that it makes it easy to get the curved area. This is rechargeable so you won’t have to be bothered about getting new batteries because you can just charge this up. This also comes with a bag that can hold everything in it. Overall, this has been working great and I would recommend it because this can save you money instead of going to a salon. I received this product for free in exchange for my honest and unbiased review.