This product didn't work for me but I'm leaving a positive review as the company has honored their refund promise even after the 30 day deadline. The product definitely brightens, but you have to be realistic. This is simply not a professional treatment as only dentists/licensed providers can use the highest concentrations needed for maximum whitening. I'm 50 years old and yellowing is average for my age - not bad, but not bad either. Kali White definitely got whiter, but my teeth were still yellow, just light yellow. Kali White sent me additional free tubes but the result didn't really change and because I tried so many treatments I got redness on my lips and tip of my tongue. But I recommend it to anyone with slightly yellow teeth (or younger clients). With severely yellowed teeth, this will improve the situation somewhat, but in my case it is not enough, I need professional treatment. Great company, very honest and responsive and the product definitely works better than other home kits I've tried. Only the whitening effect was not enough for me.
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