You can use any brush to hide paint in an image layer. Hidden paint is not visible, but it still exists. You can later show hidden paint using any brush.
In the Paint Panel or any Brush Options window, set Brush Mode to Hide or Show.
Drag the stylus on the image layer to hide or show paint.
To quickly switch between hiding and showing paint using the same brush, use the hot key editor to assign shortcuts.
In the Paint Panel or any Brush Options window, set Brush Mode to Show.
Move the cursor over the hidden paint, but do not press the stylus against the tablet or press the mouse button.
The brush preview will momentarily reveal the hidden paint beneath it.