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How to Whiten Teeth in Photoshop

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Do you take a lot of photos of people? Then you’re going to have to whiten and brighten teeth at some point.
In this article, I’ll show you how to whiten teeth in Photoshop by using adjustment layers.

How to Whiten Teeth in Photoshop

Before you start, it’s important to know how white normal teeth should be. If you make teeth look too white and bright, the result will not look natural.
Take a look at portrait photos in magazines to get a sense of how far you can go.
I’ll use this photo as an example. Her teeth look OK, but they could be slightly whiter and brighter to make the portrait look perfect.

A portrait of a female model in the snow - how to whiten teeth in Photoshop
© Pixabay

Here’s how to whiten them in Photoshop.

Step 1: Use the Lasso Tool to Select the Teeth

Open the photo and zoom in. Select the Lasso Tool from the tool bar (Shortcut ‘L’) and make a selection of the teeth.
It’s better to select a bit of the lips as well for now. We’ll make it look perfect later.
A screenshot showing how to whiten teeth in Photoshop - lasso tool

Step 2: Add an Adjustment Layer

Click on the New Fill or Adjustment Layer icon at the bottom of the Layers window and add a Hue/Saturation Layer.
The layer appears above the background layer so you can always go back to the original photo.
A screenshot showing how to whiten teeth in Photoshop - adjustment layers

Step 3: Whiten Teeth

Select ‘Yellows’ in the settings drop down menu. Lower the saturation by dragging the slider to the left.
This will only affect the area we’ve selected earlier and will make the teeth whiter.
A screenshot showing how to whiten teeth in Photoshop
Don’t go all the way to -100. Natural teeth always have a little bit of yellow in them. Keep looking at the photo while dragging the slider and stop when it looks good.

Step 4: Brighten Teeth

Now you know how to whiten teeth but there’s more. The problem in my example was not so much the colour of the teeth but the brightness.
When you need to make teeth look whiter in Photoshop, you also have to make them lighter.
Select ‘Master’ again in the drop down menu and drag the Lightness slider to the right. The more you drag the slider, the brighter the teeth will get.
A screenshot showing how to whiten teeth in Photoshop - brightening
It’s clear now that the selection we’ve made earlier wasn’t perfect. We’ll use a masking technique to remove the lighter areas around the teeth on the lips and mouth.

Step 5: Make Final Adjustments to the Selection

Look at the Layers window. The layer mask thumbnail is almost all black. The selection of the teeth is white but almost not visible.
Only the white areas are affected by the Adjustment Layer. You can add or remove areas by painting with black or white on the photo.
A screenshot showing how to whiten teeth in Photoshop - adjustments layer
Select the Paint Brush from the tool bar (Shortcut ‘B’). Adjust the settings so it’s small and soft.
A screenshot showing how to whiten teeth in Photoshop
A screenshot showing how to whiten teeth in Photoshop
Make sure to select the mask thumbnail in the Adjustment Layer and start painting with black on the lighter areas.
Keep cleaning up the photo until all the lighter areas on lips and mouth are gone.
A screenshot showing how to whiten teeth in Photoshop
You can reverse the effect if you make a mistake by painting with white. Switch between back and white using shortcut ‘X’.
Here’s a ‘Before and after’ to compare.
A close up portrait of a female model - how to whiten teeth in Photoshop
And the result…
A portrait of a female model in the snow - how to whiten teeth in Photoshop

Conclusion

Now you know how to whiten teeth in Photoshop. Easy, right?
Before you start, it’s best to know how white healthy teeth really are. This way you’ll get the best results. No one will guess that you made teeth look whiter.
Always use a layer mask so you can go back to the original photo if you don’t like the result.
Looking for more great Photoshop tutorials? Check our guides on how to crop and straighten or add a cool lens flare effect in Photoshop!

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