This product works very well for me. It requires ongoing maintenance, probably every couple of weeks to maintain teeth whiteness. I leave it on for two hours and friends have noticed the difference and have commented. The website is very easy to use for purchasing and delivery to NZ is within two weeks. Highly recommend this product if used according to instructions.

Very good product. It turned out to be better for me than Philips Zoom, which caused me a lot of pain regardless of specific product (I tried them all). This product is much more mild, causes no pain to my sensitive teeth and gums, works faster with the same good result, and costs less. I'm very glad I found it!