Corns are keratotic annular growths that result from long-term friction and irritation of the same area of the foot. When not stimulated by the outside world, it is generally not painful or itchy, but after being squeezed by the outside world, there will be obvious pain. If you wear loose and breathable shoes and avoid long-term friction and stimulation, the corns will gradually soften and eventually disappear. If you frequently stimulate the corns and wear uncomfortable shoes, it may lead to the corns gradually increasing in size and not disappearing on their own. If you want to remove it quickly, we recommend using freezing as a treatment. Freezing with liquid nitrogen can effectively remove corns, and later on, recombinant human epidermal growth factor gel needs to be applied to promote epidermal recovery.