If your application is not bothering you, you can let it naturally erode from your teeth. HaloSmile is not harming you in any way. The brightness of your application normally decreases over the time and will fade after 24 hours. Depending on your biochemistry, you may still have the benefits of stain protection. You can easily check this by drying your teeth. Dry your teeth using a paper towel or hairdryer. As your teeth dry, you will start to see the product on your teeth. Do not be alarmed by the streaks, once you wet your teeth, the streaks will go away again.