In order to maximize the longevity of your whitening treatment, it is important to maintain excellent oral hygiene (brush and floss after every meal) and steer clear of foods and drinks that cause discolouration (coffee, tea, red wine, carbonated soft drinks, etc.).
One way to avoid future staining is to use a straw, even with coffee and tea.
Smokers wishing to undergo whitening treatment are advised to stop smoking in order to prevent staining.