I bought two lots of products. Both Phillips Zoom but different strengths. The first kit I was a bit unsure if it was genuine but tried it. It made my gums turn white and my dentist advised me that it was fake and not to use any more. I didn't use the other kit. Suppose I should have know considering it was less than half the price of the real products.

I have used a number of whitening gels in the past, from my dentist, with no complaints or side-effects (other than mild sensitivity in my gums). However having used Opalescence Whitening Gels from this company, within minutes my gums were inflamed and turning white (from the peroxide I assume). This is not a normal reaction for Opalescence products. I use the toothpaste (bought from my dentist) on a daily basis and have had no issues. Within 1 minute of applying this gel from Dentstore I was forced to remove the trays - very painful and sore! I suspect this product is NOT the real thing. Beware buying from this company. If you check their website there is no contact information

I too have had problems with this company, two weeks after ordering some crest whitening strips my items never arrived. The phone number does not exist and they never reply to my emails. I have since taken out a dispute with paypal and am waiting for the results. Please be warned, although it's a well presented web-site it does not deliver the goods.