How often is it safe to use whitening strips

Whitening-strip use should follow the product directions because frequency depends on peroxide strength, exposure time, tooth condition, and sensitivity.

Whitening strips carry a peroxide gel against the front tooth surfaces. The frequency that suits one product cannot be transferred to another, and whitening changes natural enamel and dentine but not fillings, crowns, or veneers.

Check the active ingredient and directions, use the strips for the stated time, and stop if burning, ulcers, or marked sensitivity develops. Have cavities, gum recession, enamel wear, and existing restorations assessed before repeating a course.

Speak with a dentist before another course if sensitivity lasts, gum tissue turns white or sore, colour is uneven, or a tooth is darkening. Urgent care is appropriate for facial swelling or severe pain.

Ask whether the product fits your teeth, what concentration and schedule apply, how to manage sensitivity, and whether the colour change is from stain or an underlying tooth problem.