I just keep a stash of Lashfood's Chamomile Makeup Erasers in my makeup bags, totes, and purses. Here’s how it works: the tip of the pen is made of charcoal. If you've ever worn a charcoal face ...

More specifically, the patent outlines a method for using the opposite end of the pen — where you might find an eraser on an actual pencil — as a pressure sensitive eraser. It’s interesting ...