Why should I avoid staining foods for 30 minutes after use?

After teeth whitening, your teeth absorb acidic, dark-colored, staining foods and drinks more easily. The effect can cause discoloration or staining easily after whitening. The use of tobacco or alcohol can negatively affect your gums, and any pre-existing gum, throat, tongue, cheek, or tooth injury may worsen when using a whitening product in combination with tobacco or alcohol.