Ingredients:Bamboo charcoal extract,hypromellose,xylitol,papain,coolingagent,stevia,fragrance,deionized water. Package Included:14 treatments(28 strips)1*Teeth color comparison chart1*User Manual Features：Professional teeth whitenerAdvanced anti-slip technologyEffective and safe for whitening teethEnamel safeEasy to use Precautions:Pregnant women and children under 12 years old shall not use this product.The product shall not be used in case of dental ulcer.The product shall not be used after orthodontics or dental surgeries. Important FAQ:Q: How many strips are in a box?A: There are 14 packs in total and there are two strips in each pack. One for the upper teeth and one for the lower teeth. In total it includes 28 strips. You should use one pack per day.Q: Will the COZYTIMES teeth whitening strips damage the enamel?A: The major ingredient of the COZYTIMES natural teeth whitening strips is widely adopted by global dentists. It will not harm gums, and various tests and long-term practices prove its effectiveness and safety.Q: Do you need to brush your teeth before and after use?A: It is advised that do not brush your teeth before use. You can wipe your teeth and dry the teeth surface. You can brush your teeth after use.Q: Can I swallow saliva in the oral cavity during use?A: Yes, you can swallow saliva during use. There is no side effect caused. Please do not sleep while using the white strips for teeth whitening .Q: Will the COZYTIMES teeth whitening strips damage enamel or cause gum discomfort?A: Although the prescription is very mild some may experience some teeth or gum discomfort. The effect is normally only temporary. However, if the irritation persists remove the strips and discontinue use.Q: How long should the whitening strips be applied to the teeth?A: The general duration is about 30 to 60 minutes. For the first time, there may be much saliva. You can do something to distract your attention and reduce saliva secretion. Generally, after using the tooth whitening strips 2 or 3 times, there will be relatively less saliva. (PS: They are dry strips, and you can drink water in use)Q: How often to use and how long will it take for my teeth to get whiter?A: You can whiten teeth once a day and it will take 7~14 days. Depends on the color of your teeth when you start using them.Q: How soon can I use it again after use?A: To maintain the desired color, please repeat the cycle every 1-2 months. Consistency is the only real solution.