Why is the dead skin on the soles of my feet thick, and why does it grow back after I scrape it off?

Reasons for thick calluses on the soles of the feet that keep returning after being scraped: 1. Excessive friction: Prolonged walking or wearing tight, narrow, and non-breathable shoes and socks can cause excessive friction on the soles of the feet, leading to aging and thickening of the stratum corneum. 2. Fungal infection: Poor foot hygiene and frequently wearing hot and stuffy shoes and socks can easily lead to fungal growth, which may stimulate the thickening of subcutaneous foot tissues. 3. Sweat blisters: Remaining in a hot and humid environment for a long time can make the feet prone to sweat blisters, and the stimulation of dermatophytes can cause local tissue thickening. To address these issues, it is recommended to wear loose and breathable shoes and socks, and appropriately reduce excessive friction. Pay attention to foot hygiene to avoid fungal infections. If skin conditions such as sweat blisters occur, timely medical treatment is advised. Meanwhile, when removing dead skin from the soles of the feet, use gentle methods to avoid over-stimulating the skin and causing further thickening of the stratum corneum.