If you are grinding off an unbelievable amount of dead skin. Try it and it doesn't hurt your skin. If you have any doubts about whether or not this will work for you you don't need to. This product is amazing at removing calluses on your feet quickly and safely. It will save money for you when you go for a pedicure you can skip paying extra money to have your calluses removed. It is made with stainless steel and non-slip plastic handle and will never rust and no need to change. Perfect for the ones who like wearing high heels flip flops sandals or sneakers. Treat yourself to a home spa day today. You are worth it! Used on both dry and wet foot surface just use it before bath only need minutes the heavy calluses will be easily removed. It really helps your feet get smooth and soft bottom. Regular care with your own pedicure reduces the hard skin build up and gets perfect pretty foot skin. Easy to use with long handle for easier home pedicures .