You can greatly improve every portrait in which thesubject is smiling by applying a little digital toothwhitening. Yellow teeth always dull a smile as well asthe overall look of the photo.You first select the teeth and soften the selection, toavoid a visible line between the areas that arelightened and the rest of the image. Although thereare many ways to make a selection in Photoshop,using the Quick Mask mode or the Quick Selectiontool as described in Chapter 2 works well whenmaking a detailed selection such as selecting apersons teeth.After the teeth are selected, whitening is a two-stepprocess. You have to remove the yellow and thenbrighten the teeth by adjusting the saturation. Asinthe previous tasks, duplicate the Background layeras a safety step and zoom in to make the detailedselection. Then zoom out to see the whole imagebefore adjusting the color. Digital tooth whiteningshould be a subtle adjustment to keep the smile andthe person looking natural.
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1 Zoom in and make a selection ofthe teeth using the Quick Maskmode or the Quick Selectiontool.
2 Click Select Modify Feather.The Feather Selection dialog boxappears.
3 Type 1 in the Feather Radiusfield.
4 Click OK.
5 Click the Zoom tool and zoomout to see the whole image.
6 Press (Ctrl+H) to hide theselection marquee.
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7 Click Image.
8 Click Adjustments.
9 Click Hue/Saturation.
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10 Click here and selectYellows.
11 Click and drag theSaturation slider slowlyto the left to removethe yellow.
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12 Click here again and select Master.
13 Click and drag the Lightness slider slowlyto the right to brighten the teeth.
14 Click OK to apply the changes.
15 Press (Ctrl+D) to deselect the teeth.
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