We're sorry to hear that you feel this way. We can assure you that our Whitestrips go through many quality checks to ensure that they reach you in the best possible condition, and it may be helpful to know that this product is intended to ship in its own container. We'd also be happy to share the instructions with you. For best results, we suggest you use your Professional Effects strips first. Use 1 every day, or as close to every day as you can, until the entire set of Professional Effects strips is complete. Professional Effects strips should be worn for 45 minutes. After you have finished using your Professional Effects kit, you can use 1 Supreme Bright Boost strip each month thereafter, to maintain your white smile. Supreme Bright boost strips are worn for 1 hour. Please give us a call at (800) 395-8423 if you have any further questions.

We're sorry to hear that this has been your experience, and we hope you're feeling better. Safety is at the heart of all we do here at Crest, and we can assure you that our Whitestrips have been thoroughly evaluated to be safe when used as directed. The whitening ingredient peroxide - the same enamel safe whitening ingredient dentists use for tooth whitening - is at a level that's in line with regulations. However, some users may be more prone to sensitivity than others. There are steps you can take to reduce/eliminate this sensitivity, such as not brushing too hard, or more than twice a day during treatment, and using a softer toothbrush. As well, our Whitestrips go through many quality checks to ensure that you can enjoy brilliant results with them. Consumer testing and clinical studies have shown that Whitestrips are effective. However, if you have stubborn stains you may need to use a second box of Whitestrips to achieve the results you want. We'd also like to mention that you shouldn't exceed a total of 2 kits per year. We hope this is helpful, and we'd like to gather some more details for our Safety and Quality Teams. When you have a moment, please give us a call at (800) 395-8423.

We're sorry for any confusion, and we can assure you that our Whitestrips go through strict quality checks to ensure that they reach you in the best possible condition. This product is intended to arrive in a cardboard box, as it ships in its own container. We'd also be happy to share the instructions with you. For best results, we suggest you use your Professional Effects strips first. Use 1 every day, or as close to every day as you can, until the entire set of Professional Effects strips is complete. Professional Effects strips should be worn for 45 minutes. After you have finished using your Professional Effects kit, you can use 1 Supreme Bright Boost strip each month thereafter, to maintain your white smile. Supreme Bright boost strips are worn for 1 hour. We hope this is helpful, and we'll also be sure to let our team know how you feel about this and our website. Please give us a call at (800) 395-8423 if you'd like any further assistance.

Thank you for sharing your experience with us. We recommend reaching out to Sam's Club directly for assistance by calling 1-888-746-7726.