Note: For cosmetic purposes only, do not eat or sleep while using this product. Note: 1. Not compatible with braces or hats. 2. If you are not satisfied with the fit, you can easily reshape it as many times as you like. For this product to fit properly in the mouth, a person must have some existing tooth structure. 3. This product is not a denture or brace. This item is used only to improve your appearance. Installation instructions: Place the adhesive in a cup of hot (almost boiling) water for 1 minute. This makes them flexible and ready to customize. Using a mirror, firmly place the mouthguard over the existing teeth. Press them firmly against the teeth and tap the real teeth behind the impression material with your thumb. Gently remove the teeth from your mouth after 30 seconds and cool them in a glass of cold water. The impression material will turn white when it hardens. Material: Plastic included Packaging: 1 set of dental veneer caps Note: Only by boiling water can the teeth become soft and attach to the teeth.