Here's how we tested the best toothpastes: Taste: If toothpaste tastes terrible, you won't want to use it twice per day. In testing, we liked those that had a clean and fresh taste that got rid of ...

When used twice a day whitening toothpaste can take from two to six weeks to change the colour and appear whiter. This is dependent on the type of toothpaste being used and the strength of the ...