Home » Tip of The Day » Hide The Selection OutlineHide The Selection Outline May 8, 2016. Posted in: Tip Of The Day. In some cases, you may want to hide the selection outline (the marching ants). You can do this by pressing Ctrl H (Mac: Command H). Remember that the selection is still active, it’s just invisible. To bring it back simply press Ctrl H again. « Previous Photoshop Tip: | Next Photoshop Tip: » Sign-up for the PTC Newsletter so that you'll never miss a tutorial!. Your Email Address: