So, what exactly is the blue part of the eraser for?

That’s probably why it can still be found on the stationery shelves: a mix of nostalgia, timeless design and practicality.

Do we still need to have one today?
It all depends on your use:

For schoolchildren, it is better to use a soft and supple eraser, more suitable for paper.
For artists, do-it-yourselfers or hobbyists, blue eraser remains a formidable ally: it cleans pencil lines on wood, cardboard or walls after a project.
In short, it is a small versatile tool that is often underestimated.

In short: the truth about the blue
half No, it doesn’t erase the ink.
Yes, it erases the pencil, but only on solid surfaces.
And above all, it remains a school memory that many keep fondly.
The next time you come across a two-tone eraser, remember: its blue half was not useless… simply misunderstood.