Using brushes for photo restoration
When performing a photo restoration the brush tool is very useful. Used for painting in shadows or highlights, colouring, selecting the size of you various tools you use when performing general photo restoration tasks. It is a very versatile tile and it will be used all the time. There are many types of brushes, from stipple, sharp edged, soft, even custom brushes you can define.
An example of custom brushes for photo restoration would be a hair brush, a custom brush shape to draw clumps of hair, for repairing a portrait. The sky is the limit when using custom brushes and many of them are free. Just search the net!