Photobiomodulation Therapy Plus M-health in Head and Neck Cancer Patients: LAXER Study

This study is testing whether combining light therapy (photobiomodulation — a specific wavelength of light applied to the mouth) with a mobile health app can reduce severe dry mouth in people who had radiation treatment for head and neck cancer. **You may be eligible if...** - You are 18 years or older and have been diagnosed with head and neck cancer - You completed radiation therapy that included the salivary glands, 1 to 36 months ago - You have severe, ongoing dry mouth (grade 3 on a standard toxicity scale) - Your cancer treatment has finished and you are in complete remission - You have received medical clearance to participate **You may NOT be eligible if...** - You are still actively receiving cancer treatment - Your dry mouth is less severe than grade 3 - You had prior adverse reactions to the devices or treatments being studied - You are pregnant or breastfeeding Talk to your doctor to see if this trial is right for you.