[header] How to whiten teeth [title] Use whitening toothpaste if you're on a tight budget. [step] A tube of whitening toothpaste typically costs less than $10 at the drugstore or local supermarket. [title] Look for a toothpaste with the american dental association (ada) seal of approval. 
[step] Ada-approved whitening toothpastes use abrasive particles to polish teeth along with chemicals that bind to stains and remove them. Studies have proven that these toothpastes are no harder on your enamel than other toothpastes.