Corns result from pressure and friction on your toes, and tight or uncomfortable shoes can be one of the culprits behind their appearance. One of the most important things you can do to prevent corns from developing and to reduce the severity of any corns you may already have is to stay away from shoes that put pressure on your toes.  Ideally, you should mostly wear shoes that you can wear socks with. Socks can cushion your toes, thereby minimizing the friction that can cause and worsen corns. Completely avoid high heels, especially those with narrow fronts. Choose shoes that are made from natural materials, such as leather and fleece. They are more breathable. Once you get home and kick your shoes off, you can further minimize the pressure on your toes by wedging a foam pedicure comb in between your toes. You could also try slipping on a pair of foam pedicure slippers or sandals. This footwear places wedges in between your  toes, separating them and preventing them from rubbing together as you move around. Foot powder can absorb moisture. As a result, the corns on your toes are less likely to become irritated or inflamed. Sprinkle the foot powder over and in between your toes before slipping on your socks and shoes in the morning. You can also reapply the foot powder throughout the day as needed if you sense that the skin in between your toes is getting sweaty. Soak your feet in lukewarm, soapy water for about 20 minutes to soften the skin. After that, gently scrub the corn with a pumice stone to remove some of the toughest skin on the top surface of the corn. Alternatively, try using an emery board instead of a pumice stone. When a corn develops in between toes, it can be difficult to scrub it with a pumice stone. An emery board or nail file should be used in these instances. If swelling and discomfort continue, you can can apply a cold pack or ice pack to the area for a few minutes to numb away discomfort and minimize swelling. The ice will not help heal the corn itself, but it can be used to treat the...

TL;DR in Vietnamese:
Chọn giày đem lại cảm giác thoải mái. Giảm áp lực bằng cách dùng đệm tách ngón chân. Rắc phấn hút ẩm chân vào kẽ ngón chân. Nhẹ nhàng chà vùng da dày bằng đá bọt. Giảm cảm giác khó chịu bằng nước đá.