How does a callus turn yellow?

A callus turns yellow due to a combination of factors, including accumulated dead skin cells, dehydration, and friction from repeated pressure or irritation. As the callus thickens, it can become dry and lose moisture, leading to discoloration. Additionally, exposure to dirt, sweat, and other environmental factors can contribute to the yellowing of the skin. Regular exfoliation and moisturizing can help maintain its color and health.