I love these pens! I'm in nursing school and i like to take colorful notes to help identify key terms/ concepts, but i can't stand "messy" notes where i have to cross things out. These are perfect because they allow me to erase and re-write while keeping my notes neat. I find that the ink erases much cleaner if i give it a few seconds to dry before erasing. Just don't leave your writing in a hot car, or you'll come back to faded/ blank pages!