Brighten Teeth

It seems like everyone wants whiter teeth these days. You might not have the time for peroxide-based solutions, but there's no need for such drastic measures anyway.This Photoshop hack takes only a few seconds and instantly removes years of stains.

Most teeth, by design, have a slight yellow cast. Add coffee, wine, tobacco, and a host of
staining foods, and the smile isn't quite as bright as it could be. In everyday life, this isn't a
major issue. But for special portraits, a warm, inviting smile is important. This Photoshop hack
is so easy, you'll wonder why you never figured it out before. As long as you show a little
restraint with the technique, the results look quite natural.
First, open your portrait in any version of Photoshop. I'll use Photoshop Elements for this
illuminating exercise. Use your favorite tool to select the teeth. I usually start with the Magic
Wand. Click on a middle-toned tooth with the wand and see what it selects. By holding down
the Shift key, you can make another selection to add to the first one. At this point, I switch
to the Lasso tool to clean things up. You can add to the existing selection by holding down
the Shift key and lassoing more areas. Or, by holding down the Option key, you can deselect
areas that you don't want affected by the upcoming adjustments.
Now it's time to remove some of that natural yellow tint. In Photoshop Elements, open the
Hue/Saturation dialog box (Enhance Adjust Color Hue/Saturation). The path is a little
different in Photoshop CS (Image Adjustments Hue/Saturation). Choose the Yellow
channel from the Edit drop-down menu and move the indicator on the Saturation slider bar to
the left, as shown in Figure 6-17. This will desaturate the Yellow channel? or, in English, get
rid of the stain.
Figure 6-17. Desaturating the yellow tint in the Hue/Saturation dialog Box


I've found that setting the Yellow channel to somewhere between -70 and -80 does the trick
nicely. Once you've toned down the yellow, select Edit Master and move the indicator on
the Lightness slider bar to the right, as shown in Figure 6-18. As you move the indicator to
the right, you're brightening the teeth. Be careful with this adjustment, however, because
you can overdo it and create an unnatural, super-bright smile.
Figure 6-18. Using the Lightness control to brighten teeth


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