Hi Mark. I hope you can help. Please can you recommend where is the best place to buy gel refills for teeth whitening. I had this done at my old dentist and I still have the trays but I have moved home now and my old dentist is not responding. I would like to purchase the refills but there seems so much choice and I don’t want to buy the wrong thing. Also, Can the internet sites really be trusted?

Many thanks, I look forward to hearing your reply.