IMPORTANT NOTE - For best results, we recommend that you use it regularly every day for 7 days to achieve teeth whitening results. Reduce or stop using tooth discolored foods during use. If you have any questions, please contact us and will do our best to solve your problems!. EASY TO USE- Teeth whitening pen is very easy to use, it is a flexible rotating device, apply the whitening pen to the surface of your teeth with the soft brush head, avoiding contact with the gums, there is no sensitivity when teeth whitening, allowing you to whiten your teeth easily and safely. A small one, you can use it anytime and anywhere!. VALUE PACK - Contains 5 teeth whitening pens, enough to last you a month. This is the most cost-effective whitening kit. We recommend using it twice a day for best results. Use it before bed and when you leave the house in the morning for a brighter smile!. QUALITY & EFFECTIVENESS - Our teeth whitening gel is made with quality ingredients, which can be used more than 50 times with fast results in just 30 seconds. Continuous use can whiten your teeth by 4-8 shades. PROFESSIONAL TEETH WHITENING- Luckin Smile professional teeth whitening pens contain 35% carbamide peroxide, which is a safe peroxide that quickly removes years of accumulated stains from coffee, tea, wine, cigarettes and more. Remove tooth stains quickly and effectively!.