During an episode of Art Supply Posse, Heather mentioned that she didn’t realize that most fountain pen inks were water soluble. I held my tongue because I already had a pile of waterproof fountain pen inks in my arsenal and I was ready to test and share them with folks but I didn’t want to…
![Ink Review: Waterproof, Permanent Inks](https://i0.wp.com/www.wellappointeddesk.com/wp-content/uploads/2016/07/waterproof-ink-1.jpg?resize=760%2C570&ssl=1)