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<p>Stay away these **********. Advertised for R 350 then R 2007 was deduced immediately from my account. When I asked for refund they said it cannot be reverse but will give it to me half price. I did receive the product but does not work at all. They say you must keep it on for 30-40 minutes. I have been sleeping with for 8 hour's x 10 nights with the hope for any result, nothing. My teeth is the same colour as when I started. This has left a bad taste in my mouth for internet shopping.</p>