Big or small corn?: How deep a doctor needs to go depends on the size of the corn, and how much of the corn is below the surface level of the skin. When a corn goes below the surface of the skin, it is actually pushing into the skin. The corn is dead skin material (that's why shaving it doesn't hurt), and a doctor removes the dead skin all the way down to the living skin layer.
Answered 9/25/2011
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