Because they hide and disclose different aspects of the face, masks are mysterious. Digital image masks work on the same principle: by revealing and hiding portions of an image, they increase the visual interest of the piece. Digital image editing programs like Adobe Photoshop, Illustrator, and Philippines photo editor all have picture masking as a standard feature. By overlaying the picture layer with a detailed grayscale layer or a path that filters which portions of the image get shown, you can mask an image or create an image mask.