If you're tired of marking the site and then re-marking it after scrubbing with an alcohol-based prep, you'll love the XL Prep Resistant Ink markers from Viscot. A special patent-pending ink enables marks made with this pen to last 10 times as long as traditional skin markers—even after scrubbing. That helps prevent mistakes that can lead to wrong-site surgery, and it complies with the Joint Commission Protocol for Correct Site Marking. Also available, the XL Bold Tip marker. This full size marker has a larger tip for marking greater surface areas as in body contouring.