Whitening transformation means making something that is not white, become white. It's like when you wash your white shirt with bleach and it becomes brighter and cleaner looking.
In terms of our teeth, sometimes they can become less white because of things we eat or drink, like coffee or soda, or because we don't brush our teeth often enough. But if we want to make our teeth look whiter and brighter, we can use things like whitening toothpaste or whitening strips.
These products have a special ingredient in them called hydrogen peroxide that helps get rid of the stains on our teeth and make them look whiter. We put the toothpaste or strip on our teeth, wait for a little bit, and then rinse it off with water.
It's important to remember though that we should only use these whitening products as directed and not too often or it could hurt our teeth. And even though our teeth might look whiter, it's still very important to brush and floss our teeth every day to keep them clean and healthy.