A common delivery system for this is a styptic or hemostatic pencil ( not to be confused with a caustic pencil ).
2.
The silver and potassium nitrates in caustic pencils is in a dried, solid form at the tip of a wooden or plastic stick.
3.
Another product available over-the-counter that can aid in wart removal is silver nitrate in the form of a caustic pencil, which is also available at drug stores.
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