News Physics

How to peel permanent marker off glass

All that’s needed is a little water and taking your time

permanent marker on glass

OUT, DAMNED SPOT  Ink from permanent markers may seem nearly impossible to remove, but researchers have demonstrated that the surface tension of water can peel the ink off glass.

Stevanovicigor/iStockphoto

By Emily Conover

- More than 2 years ago

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Permanent markers aren’t so permanent after all. All that’s required to peel the ink from glass is the surface tension of water and a little patience, scientists report.