dalbit_____'s post

It'll be erased after 10 minutes⁉️A vaporizing pen is a great item during exam periods🖋️ When you want to look at a textbook cleanly but underline it while looking at it, or when you want to look at a past exam book cleanly but mark it while solving it, try using a vaporizing pen〰️ It varies depending on the amount of ink, temperature, and humidity, but the ink will start to disappear after 10 to 30 minutes.