A couple of days ago I got a new pen. I wanted to write some notes and I passed by a bookstore that sells these cute pens

I noticed it has a little writing that says: “Erasable Pen”

The last time I saw erasable ink was when I was a child and it was an eraser that was too hard it takes a layer of paper to erase. But this one made me curious

I noticed the eraser on the back of this pen doesn’t seem to dissolve when used. so that means it doesn’t work like other erasers used for pencils

The product page says that it’s a “heat-sensitive ink”

And on Wikipedia turns out there is a page for this ink

The ink turns transparent when heat is applied, it’s not erased 😄

Here is a short video for it:

That was an interesting little learning for my day 😃