How to make teeth white safely?

Professional dental : Dental whitening products available only through dental offices will whiten teeth safely. An in-office treatment will make the whitening take place more quickly, but all whitening procedures need to be followed up with occasional at home treatments to maintain the appearance.

Many options: There are quick 1 hour treatments, but safest way is home bleaching trays every other night for max 2 hours.

Bleaching: Whitening toothpaste can help reduce stains (coffee, tea, tobacco) on the outside of teeth. But, to really whiten teeth, there are three different types of 'bleaching': 1. Over-the-counter = crest whitestrips. 2. Trays that hold bleaching gel against the teeth, and 3. In-(dental)office bleaching. All three types of whitening are effective. The faster the effects, the more expensive.