It was a waste of money. I used the 44% and it didn't do anything to whiten my teeth. I used it exactly as the instructions said. I guess it must be old. There was no taste to it like I expected. I will be purchasing another brand.

45% gels do NOT work at all. Waste of money. Purchased the 45% strength gels, thinking they would definitely work, and they promise to whiten teeth after just 15 minutes, but they have not made my teeth any whiter after several 1 hour sessions. All this gel has done is burnt and irritated my gums and also made my upper lip swell up. Also, the syringes are designed very poorly so that when you take off the cap the hole is too big and too much gel comes out. How hard is it to design decent syringes. Finally, took forever to arrive. Total waste of money, this. Do not buy from them.

The product arrived in damaged package The product arrived in damaged package, after several weeks. The gel smells of pure bleach and it has burnt my gums and inside mouth after 1 use, used minimum amount of gel too as quite cautious. Contacted company on several occasions reporting the problem, with no response… Would definitely not recommend at all.

Super speedy delivery from the US to… Super speedy delivery from the US to the UK - my order literally took a few days. The price is a fraction (a tiny fraction !) of what the identical product would have cost me direct from my dentist. And it works brilliantly ! Thoroughly recommend for service, product and price (I use the 16%) and will be continuing to use Expert Whitening.

Excellent professional grade products! I have been using these teeth whitening products for about 7 years now. Professional grade, easy to use, and amazing results. I do monthly touch ups to keep my smile bright. The pricing is excellent! I recommend getting the the blue mineralizing gel also and use immediately following each treatment. I do not have any sensitivity when I use the two together.