Use the Healing Brush Tool in Photoshop CS5
Grouped together in the Tools panel of Photoshop Creative Suite 5 are the tools used for painting and retouching images. You can use the Healing Brush tool for repairs, such as eliminating scratches and dust from scanned images. The difference between the Spot Healing Brush tool and the Healing Brush tool is that a sample spot is required before applying the Healing Brush. Follow these steps to use this tool:
Select the Healing Brush tool in the Tools panel (it’s a hidden tool of the Spot Healing Brush tool).
Find an area in the image that looks good and then Alt-click (Windows) or Option-click (Mac) to sample that area.
For example, if you want to eliminate wrinkles on a face, choose a wrinkle-free area of skin near the wrinkle. (Try to choose an area relatively close in skin tone.)
Position the mouse cursor over the area to be repaired and start painting.
The Healing Brush tool goes into action, blending and softening to create a realistic repair of the area.
Repeat Steps 2 and 3 as necessary to repair the blemish, wrinkles, or scratches.