Maintaining a bright, white smile requires regular touch-ups. While the frequency of touch-ups varies from person to person, most people need to schedule an appointment every 6 months. Those who consume foods with coloring agents or smoke may need to whiten their teeth more often. Additionally, pregnant women, those with a known allergy to hydrogen peroxide or carbamide, and those under 16 years old should avoid professional teeth whitening.
If you've used a home teeth whitening kit in the past and been disappointed with the results, you should know that professional teeth whitening is a completely different experience. The results are instant and usually last between four and six months.