Definitely starting to see a difference… Definitely starting to see a difference in the colour of my teeth.. Have spent the last week perfecting how to apply this product so so carefully so not to allow it to come into contact with the gums as it burns so so badly. I have found that using a mouth guard (from a game of speak out) to open the mouth wide and applying the product to each individual tooth with a tiny brush the best way. Usually have to put cotton wool down the sides to avoid saliva running onto teeth. Works best with uv light and also 1 hour rather than 30 mins. I haven't found sensitivity a problem. Hope this review helps someone.

order not arrived Ordered from USA around 21st June: it arrived at Heathrow on 25th June. It is now 11th July and tracking shows that it is still in London. I complained 2 days ago but it has still not arrived.

This arrived promptly but frankly was… This arrived promptly but frankly was very disappointing.I did notice that the syringe unlike the ones obtained from my dentist have a very large opening which means it’s difficult to prevent it splurging out.I did use this appropriately but unlike my dentists tooth whitening there was no appreciable difference in tooth shade.I wouldn’t bother .

The delivery time wasn't too bad… The delivery time wasn't too bad considering it comes from America. However, I've been using the system with the gels bought first (didn't know tray wasn't included so ordered tray separately!) For 2 weeks and not seen much difference unfortunately and that's with the 35%. I also keep reading that these led lights are a gimmick and wont actually help teeth whiten. Apparently it's got to be UV lights that work.

I kept the gel on for 15 mins on the… I kept the gel on for 15 mins on the very first try and it has left my gums burnt, three days later and they are still very sore and it had no effect on the whiteness of my teeth. Very disappointed and feeling uncomfortable.