Booklet - The Oral Health Care Before and After Radiotherapy

6. Care for the skin After radiotherapy, the skin or lips may have been burnt; these areas should not be exposed to soap, any medicated cleansing agent or moisturizer. You should only apply a neutral moisturizer over these areas. Furthermore, you should avoid skin exposure to sunlight or ultra-violet light directly. 7. Exercise the mouth It may be difficult to open the mouth after radiotherapy. You could do more exercise on your mouth every day by slowly opening it wide and holding for ten seconds each time. The exercise may be performed three times daily with twenty cycles, then the difficulty of opening the mouth may be reduced.