But what is the blue part of the eraser for?

Everyone is familiar with the two-tone eraser, with its pink side and its blue side. For years, a popular belief circulated: the blue side was used to erase the pen. Who hasn’t labored over their notebook, hoping to erase an ink mistake, only to end up with a sheet full of holes?
But then, what is this blue part really for ?

The Myth of the Pen: Why Did This Belief Take Hold?

For generations, the idea that the blue part erases the pen has been passed down, probably because of its harder, more abrasive texture . Many have tried to test this theory… with more holes in their notebooks than success !

In reality, this side of the eraser is not designed for pen inks , which penetrate the paper instead of remaining on the surface like pencil. Rubbing harder will only damage the paper without actually erasing the ink .

What is the real use of the blue part?

Contrary to popular belief, the blue side is indeed intended for erasing pencil , but on specific surfaces . It is harder and more abrasive , which makes it ideal for:

Thick, rough papers , such as Canson paper used for drawing.
Cardboard and other rigid surfaces , where the pencil adheres better .
Erase marks on the walls , especially scribbles made by children .
The pink side is softer and suitable for classic papers , such as notebooks and binder sheets .

What the experts say
The manufacturers themselves confirm that the blue part was never designed for ink . Its abrasiveness simply allows for deeper erasing on hard surfaces .

Some blue erasers can fade light inks on thick paper, but they do not erase them completely.

Conclusion: no more preconceived ideas!
If you were one of those who thought the blue eraser erased the pen , you’re not alone! But now that the truth is restored , there’s no need to press down like a maniac on your paper . Use the right side in the right place , and your pencil mistakes will disappear without a hitch .

And you, have you ever tested this myth?