What's a good toothpaste or system to help whiten teeth within a month ?

Professional Product: Toothpaste and OTC products will not do the trick. Professionally dispensed whitening gel (with trays) should be able to whiten your teeth withing the month. Please speak to your dentist regarding your options.

Tooth Whitening: The whitening toothpastes that are approved by the ADA will remove the outside stains from most people's teeth. Be aware that those toothpastes do contain more abrasive ingredients in order to remove the stain. Some people need more internal color change and can see a dentist to whiten in one of two ways: In-office whitening or At-home whitening. Both take less than a month.