Warm indoor light, coffee and a phone camera make a smile look yellow in photos, even when it isn't. Whitening in a photo editor usually ends up bluish or unnaturally bright. Here the AI picks the shade for you.
Upload a photo — Whiten teeth is already ticked. Google's Nano Banana 2 makes the visible teeth cleaner and whiter, to a healthy ivory rather than a blue or paper white. The shape, size, gaps and position of every tooth stay exactly as they are, and it never adds teeth where none are visible. Choose how white with the strength: Barely noticeable, Natural or Strong.
Whitening pairs well with other fixes: add a smile if you look too serious, or clear the skin and lift shadows. On a group photo everyone's teeth get whiter — or only the person you name in the note.