Home » Tip of The Day » Temporarily Disable a Layer MaskTemporarily Disable a Layer Mask June 19, 2016. Posted in: Tip Of The Day. To temporarily disable a layer mask, press-and-hold the Shift key and click on the layer mask thumbnail. Do the same to enable it. « Previous Photoshop Tip: | Next Photoshop Tip: » Sign-up for the PTC Newsletter so that you'll never miss a tutorial!. Your Email Address: