Thank you so much for your reply Brookes, and please don't apologize for the length of your response as it is much appreciated that you go to so much trouble. I do enjoy reading all the comprehensive information that you furnish. Many thanks again and I will have a little experiment of my own, and maybe let you know how I get on with it. Regards, dee.
-------Original Message------- From: Brooks Bradley Date: 14/04/2009 03:13:26 To: [email protected] Subject: [RE]CS>Teeth whitening Hello Dee, In answer to your question......We have utilized H202 in concentrations beyond 16%----for whitening effects on teeth....with minor, but sometimes irritating effects. In at least 80% of the volunteers utilizing 16% H202-----tissue-burn was evident by the whitened skin surfaces (even though only the outer tissue level was involved). In a majority of these cases some discomfort did manifest....but no scarring evolved. At 12% the local heating effect" was noticed by ALL participants, but presented as a distinct irritation in only about 20% of these researchers. At 9% none of our volunteers experienced any "distinctive discomfort", whatever, but the sudden onset warming, momentarily, caused some of them concern.
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