i think that they do work but they should be done with caution. if you have an underlying medical condition such as diabetes where you might be more prone to infection you have to be very careful using these products because a break in the skin can lead to infection and that can be very serious. so you have to be careful in how you use it and try not to go so far as to cause bleeding or a break in the skin. but used properly under the right circumstances they can be very effective at paring down the skin in a gentle way.
do those really work to get rid of calluses on the feet?