Whitening strips brush teeth before or after

Brush and floss before applying whitening strips, then follow the product directions and avoid brushing immediately if your teeth feel tender.

Whitening strips hold a peroxide gel against the outer enamel surface. Brushing after application can irritate the gum margin or increase sensitivity, especially when the gel has already exposed the teeth to peroxide.

Use a soft toothbrush and fluoride toothpaste before the strip, dry the teeth if the instructions request it, and place the strip away from the gums. Remove it at the stated time, discard it, rinse if directed, and resume gentle brushing later.

Arrange an examination if whitening causes persistent pain, gum burns, or sharp sensitivity, or if one tooth changes colour differently from the others. A dentist should check decay, cracks, leaking fillings, and exposed root surfaces before further whitening.

Ask whether your enamel, fillings, crowns, or gum margins are suitable for whitening and which product strength fits your mouth. Ask how to manage sensitivity and whether the darker area needs restorative treatment instead.