Hi there, I had the same problem, awful pain when I whitened my teeth. Even that Listerine mouthwash with the whiteners hurt. I picked up this set of two foams called Love That White Smile Cleaning and Whitening Foam. Unbelievable! No sensitivity AT ALL and my teeth are truly the whitest they have ever been. I am reading the package. There is less than 1% peroxide in there and the foam somehow penetrates the tooth enamel but doesn't dry it out (which is what peroxide does to achieve whiteness). The company has a good website and facebook page with way more info than I can type here. I got mine here in Canada at London Drugs but I think Target has it in the US. It tastes good too.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.