A woman applying a large amount of teeth whitening product to her teeth.

The video starts with a woman applying a teeth whitening product to her teeth. Text overlays indicate a '100 layers of Teeth whitening Challenge'. The scene then cuts to a man, presumably a dentist, reacting with shock and concern. He explains the dangers of using certain products on teeth and gums, showing an animation of how peroxide works and a close-up of damaged gums. He expresses disbelief and concern about the potential harm.