To whiten teeth in photos on a phone, use the Brush in Snapseed, a free app: paint over the teeth once with lower saturation to take out the yellow, then once with a touch more brightness. That keeps your real teeth and changes nothing else. Below are the steps for iPhone, Android and Samsung phones, a free computer method in Photopea, wording for AI editors, and the shade to stop at so the smile still looks like yours.
6 ways to whiten teeth in photos
Manual tools only change the teeth you paint, so the smile stays exactly as it was. AI editors take a sentence instead and redraw the area. As of September 2026:
| Method | Phone or computer | Price | How it whitens |
|---|---|---|---|
| Snapseed Brush | iPhone (iOS 17 and up) or Android | No charge, no ads, no in-app purchases | You paint lower saturation and higher brightness onto the teeth |
| Photopea Sponge and Dodge tools | Computer browser | Free to use | You paint the yellow out, then brighten |
| Ask Photos in Google Photos | Eligible Android phones and iPhones; adult personal accounts where it has launched | Comes with Google Photos | You write the change as a sentence |
| Photo assist in Samsung Gallery | Galaxy AI devices running One UI 6.1 and up | Samsung's basic Galaxy AI tools cost nothing | You type the change under Create |
| ChatGPT or the Gemini app | Browser or phone app | Capped by each service's plan | You attach the photo and describe the fix |
| Smart Editor in Toybox AI | A browser, on Pro and higher plans | 85 credits per HD edit at current prices | You state the shade and the parts to protect |
How white teeth should look in a photo
Natural teeth aren't pure white, and a paper-white smile tells everyone the photo was edited. The American Dental Association explains why real teeth darken: coffee, tea and red wine stain the enamel, and as enamel wears thinner with age, the yellow dentin under it shows more. A believable edit takes some of that yellow out without erasing it.
- Compare with the whites of the eyes. Teeth should stay a little warmer and a little darker than the eyes. If they're brighter than the eyes, go back a step.
- Keep the shading. The front teeth catch the most light. Teeth toward the corners of the mouth sit in shadow and should stay darker.
- Keep the edges and gaps. The thin darker lines between teeth are what make them read as separate teeth. A solid white band looks like a mouthguard.
- Leave gums and lips alone. Pink gums turning gray, or white spilling onto the lip, gives the edit away.
- Match the light. Under warm indoor light, everything in the photo is warmer, teeth included. Teeth that are cooler than the skin around them look pasted in.
How to whiten teeth in photos on iPhone
Snapseed, Google's free editor, can whiten only the teeth on an iPhone. It needs iOS 17 or later.
- Install Snapseed and open the photo.
- Zoom in on the smile so the teeth fill the screen.
- Open the Brush tool, choose Saturation, and lower it. Paint over the teeth only, staying off the gums and lips.
- Switch the Brush to Brightness at a small positive setting and paint over the teeth again. For a smile in shadow, Exposure works the same way.
- Zoom out to phone size and compare the teeth with the whites of the eyes. If they look brighter than the eyes, undo and paint the brightness more lightly.
- Save the edit, and keep the unedited original too.
Why the iPhone Photos app can't whiten just the teeth
The Photos app's Adjust sliders, such as Exposure and Brilliance, and its filters and Photographic Styles work on the entire picture, while Clean Up removes objects. Lowering the color of the whole photo whitens teeth but also drains color from skin, lips and clothes. For whitening only the teeth on an iPhone, use Snapseed, Google Photos' Ask Photos (iOS 18 or later) or an AI editor.
How to whiten teeth in a photo on Android and Samsung
On Android, the same Snapseed steps work, since the app is also on Google Play. The typed options are:
- Google Photos. Tap Ask inside the editor and write something like "make his teeth two shades whiter and keep their shape". It's limited to adults with personal Google Accounts in launch countries, and most of Google Photos' editing features want Android 8.0 or newer and 3 GB of RAM.
- Samsung Gallery. On a Galaxy AI phone, open the photo's editor (the pencil), tap Photo assist (the blue circle with stars) and choose Create. Describe the change, tap Generate, and keep the original by saving the result as a copy. You'll be online and signed in to a Samsung account, the file is scaled to 12MP or less, and it gets a Galaxy AI watermark.
How to whiten teeth in photos for free on a computer
Photopea, a no-cost editor you open in a web browser, has two brush tools that do this job without touching anything else. Its guide describes the Sponge tool as a brush that saturates or desaturates what you paint, and Dodge as one that lightens it.
- Open Photopea, load the photo, and zoom in on the smile.
- Pick the Sponge tool, set it to desaturate, and brush over the teeth with a soft brush slightly smaller than one tooth. Stop when the yellow is mostly gone.
- Pick the Dodge tool, set the range to Midtones and the Exposure low, and brush once over the front teeth.
- Leave the teeth nearest the corners of the mouth a little darker, as they are in shadow.
- Zoom out and compare the teeth with the whites of the eyes, then save a copy.
If you'd rather work on a selection, use Quick Selection to select the teeth, then lower Saturation and raise Lightness slightly in Hue / Saturation (Ctrl + U). The brush method is easier to keep subtle.
Whiten teeth with an AI editor
An AI editor needs the shade, the limits, and the list of things that must not change. "Two shades whiter" or "remove the yellow staining" works better than "white teeth", which invites a paper-white smile. Type or paste the instructions below into Smart Editor's "What should change?" box. ChatGPT and the Gemini app take the same wording:
Whiten my teeth by about two shades so they look naturally clean, still slightly warmer than the whites of my eyes. Keep the shape, size and position of every tooth, the small gaps between them, my gums and my lips exactly the same.Remove the light yellow coffee staining from my front teeth and even out their color, keeping a natural off-white shade. Don't change my smile, the edges of my teeth or anything else in the photo.Whiten the teeth of the man in the middle of the group by one or two shades, a subtle change. Keep his smile and the shape of his teeth the same, and leave everyone else's teeth and faces exactly as they are.Brighten my teeth slightly around my clear braces, keeping the brackets and wire visible and the same. Keep my gums, lips, smile and the rest of my face unchanged.Teeth are one step in a portrait touch-up. For blemishes, stray hairs and lint, see how to retouch a photo with AI, and for eyes, how to change eye color in a photo.
A photo edit is not a dental plan
A whitened photo shows a target shade, not what whitening will do to your teeth. The ADA says bleaching won't change crowns, caps, veneers or fillings. Yellow teeth tend to lighten more than brown ones, and gray-toned teeth may not lighten at all. Whiteners can also make teeth sensitive for a while, and the ADA suggests talking to your dentist first. This page is about editing photos, not dental advice.
Tips for a natural-looking smile
- Do less than you think. Look away for a minute, then check again. A shade that looked right up close can look too white at phone size.
- Keep lipstick and teeth separate. A red lip makes teeth look whiter already. Brush carefully along the lip line, or add "keep my lipstick exactly the same".
- Go easy on flash photos. A direct flash already lights the teeth. Try the saturation step on its own first, and add brightness only if they still look dull.
- Save the original. Keep an unedited copy so you can start over if the result drifts.
Troubleshooting
| Problem | Likely cause | Fix |
|---|---|---|
| Teeth look gray instead of white | Saturation went down but brightness didn't go up | Add a small brightness or Dodge pass |
| Teeth glow brighter than the eyes | Too much brightness | Undo the brightness step or lower its setting |
| The smile looks like one white band | The edit filled in the gaps between teeth | Use a smaller brush, or add "keep the small gaps between my teeth" |
| Gums or lips look gray | The brush or edit spilled past the teeth | Zoom in and brush only the teeth, or add "keep my gums and lips the same" |
| A tooth changed shape | The whole smile was regenerated | Retry from your original with "keep the shape of every tooth" |
| One person's teeth look brighter than everyone else's | Only they were whitened, or whitened more | Whiten each person by the same small amount |
Whiten teeth in Smart Editor
Toybox's Smart Editor uses OpenAI's GPT Image 2.5 to change a photo from one typed instruction. It's useful when the teeth are part of a bigger touch-up or when you'd rather type than brush. It needs a Pro plan or higher.
- Upload a photo with the smile in focus under "Your image" (a JPG or PNG no bigger than 10 MB).
- Paste one of the instructions above into "What should change?" and adjust the shade.
- Leave "Shape" set to "Original" under "More options". At current prices an HD edit is 85 credits and a 4K edit is 110 (details on the pricing page).
- Tap "Apply edit"; an edit usually takes about 30 seconds.
- Compare the teeth with the whites of the eyes, and check the shape of each tooth against your original.
- If they came out too white, switch "Editing" to "Original photo" and ask for one shade instead of two.
Because each edit regenerates the full image rather than only the teeth, a lip line or a gap can move. The keep list in each instruction is there for that reason. Light, background and crop for the rest of the portrait are covered in how to make a photo look professional.