For people who follow the instructions from their dentist and the instructions for Use that come with the Pola bleaching products, the majority will have no side effects. However, some will experience temporary sensitivity (dull or sharp, sensitivity to hot or cold). This will subside after several hours of stopping the treatment and won’t leave any residual problems. The wear times can be shortened or made less frequent or teeth can be treated with a desensitiser, soothe. Abstain from carbonated drinks, citrus foods and beverages to avoid sensitivity.