I don't think this is an actual product, but a concept from the mind of designer Shi Yuan from his website. The ink is light sensitive, so it fades slowly over the course of a day, eventually disappearing by the end of the day.
Randy is currently President of InfoNewt, an infographic design and visual consulting company. InfoNewt works with clients to develop visual communications and strategies to reach their target audiences. These are designed for use in presentations, social media, training and print.
In 2013, Randy released his first book, Cool Infographics. This innovative guide prepares readers to create compelling infographics for online marketing, business reports, posters, presentations, and even design their own infographic resume.