This product is okay. It only dries "fast" if the pages are not glossy...most of my textbooks are glossy. It deposits way too much fluid on glossy pages making a small "puddle" on the page. I have wait too long to let it dry before I turn the page. They run out of ink fast too. My recommendation: Don't waste your money on these.
love Love LOVE these highlighters! I have tried MANY but these are the best by far I have used. They didn't bleed through my papers and were easy to write over. They also highlight over white-out wihtout rubbing off and show the under ink very well.